Merge pull request #610 from lubobill1990/patch-1

Update huggingface hub to resolve error in windows

README-ja.md

@@ -16,13 +16,13 @@ GUIやPowerShellスクリプトなど、より使いやすくする機能が[bma
 
 当リポジトリ内およびnote.comに記事がありますのでそちらをご覧ください（将来的にはすべてこちらへ移すかもしれません）。
 
-* [学習について、共通編](./train_README-ja.md) : データ整備やオプションなど
-    * [データセット設定](./config_README-ja.md)
-* [DreamBoothの学習について](./train_db_README-ja.md)
-* [fine-tuningのガイド](./fine_tune_README_ja.md):
-* [LoRAの学習について](./train_network_README-ja.md)
-* [Textual Inversionの学習について](./train_ti_README-ja.md)
-* note.com [画像生成スクリプト](https://note.com/kohya_ss/n/n2693183a798e)
+* [学習について、共通編](./docs/train_README-ja.md) : データ整備やオプションなど
+    * [データセット設定](./docs/config_README-ja.md)
+* [DreamBoothの学習について](./docs/train_db_README-ja.md)
+* [fine-tuningのガイド](./docs/fine_tune_README_ja.md):
+* [LoRAの学習について](./docs/train_network_README-ja.md)
+* [Textual Inversionの学習について](./docs/train_ti_README-ja.md)
+* [画像生成スクリプト](./docs/gen_img_README-ja.md)
 * note.com [モデル変換スクリプト](https://note.com/kohya_ss/n/n374f316fe4ad)
 
 ## Windowsでの動作に必要なプログラム
@@ -115,6 +115,16 @@ accelerate configの質問には以下のように答えてください。（bf1
 
 他のバージョンでは学習がうまくいかない場合があるようです。特に他の理由がなければ指定のバージョンをお使いください。
 
+### オプション：Lion8bitを使う
+
+Lion8bitを使う場合には`bitsandbytes`を0.38.0以降にアップグレードする必要があります。`bitsandbytes`をアンインストールし、Windows環境では例えば[こちら](https://github.com/jllllll/bitsandbytes-windows-webui)などからWindows版のwhlファイルをインストールしてください。たとえば以下のような手順になります。
+
+```powershell
+pip install https://github.com/jllllll/bitsandbytes-windows-webui/raw/main/bitsandbytes-0.38.1-py3-none-any.whl
+```
+
+アップグレード時には`pip install .`でこのリポジトリを更新し、必要に応じて他のパッケージもアップグレードしてください。
+
 ## アップグレード
 
 新しいリリースがあった場合、以下のコマンドで更新できます。

README.md

@@ -16,7 +16,7 @@ This repository contains the scripts for:
 * Image generation
 * Model conversion (supports 1.x and 2.x, Stable Diffision ckpt/safetensors and Diffusers)
 
-__Stable Diffusion web UI now seems to support LoRA trained by ``sd-scripts``.__ (SD 1.x based only) Thank you for great work!!! 
+__Stable Diffusion web UI now seems to support LoRA trained by ``sd-scripts``.__ Thank you for great work!!! 
 
 ## About requirements.txt
 
@@ -28,14 +28,16 @@ The scripts are tested with PyTorch 1.12.1 and 1.13.0, Diffusers 0.10.2.
 
 Most of the documents are written in Japanese.
 
-* [Training guide - common](./train_README-ja.md) : data preparation, options etc... 
-  * [Chinese version](./train_README-zh.md)
-* [Dataset config](./config_README-ja.md) 
-* [DreamBooth training guide](./train_db_README-ja.md)
-* [Step by Step fine-tuning guide](./fine_tune_README_ja.md):
-* [training LoRA](./train_network_README-ja.md)
-* [training Textual Inversion](./train_ti_README-ja.md)
-* note.com [Image generation](https://note.com/kohya_ss/n/n2693183a798e)
+[English translation by darkstorm2150 is here](https://github.com/darkstorm2150/sd-scripts#links-to-usage-documentation). Thanks to darkstorm2150!
+
+* [Training guide - common](./docs/train_README-ja.md) : data preparation, options etc... 
+  * [Chinese version](./docs/train_README-zh.md)
+* [Dataset config](./docs/config_README-ja.md) 
+* [DreamBooth training guide](./docs/train_db_README-ja.md)
+* [Step by Step fine-tuning guide](./docs/fine_tune_README_ja.md):
+* [training LoRA](./docs/train_network_README-ja.md)
+* [training Textual Inversion](./docs/train_ti_README-ja.md)
+* [Image generation](./docs/gen_img_README-ja.md)
 * note.com [Model conversion](https://note.com/kohya_ss/n/n374f316fe4ad)
 
 ## Windows Required Dependencies
@@ -97,6 +99,16 @@ note: Some user reports ``ValueError: fp16 mixed precision requires a GPU`` is o
 Other versions of PyTorch and xformers seem to have problems with training.
 If there is no other reason, please install the specified version.
 
+### Optional: Use Lion8bit
+
+For Lion8bit, you need to upgrade `bitsandbytes` to 0.38.0 or later. Uninstall `bitsandbytes`, and for Windows, install the Windows version whl file from [here](https://github.com/jllllll/bitsandbytes-windows-webui) or other sources, like:
+
+```powershell
+pip install https://github.com/jllllll/bitsandbytes-windows-webui/raw/main/bitsandbytes-0.38.1-py3-none-any.whl
+```
+
+For upgrading, upgrade this repo with `pip install .`, and upgrade necessary packages manually.
+
 ## Upgrade
 
 When a new release comes out you can upgrade your repo with the following command:
@@ -128,40 +140,212 @@ The majority of scripts is licensed under ASL 2.0 (including codes from Diffuser
 
 ## Change History
 
-### 30 Apr. 2023, 2023/04/30
+### 15 Jun. 2023, 2023/06/15
 
-- Added Chinese translation of [DreamBooth guide](./train_db_README-zh.md) and [LoRA guide](./train_network_README-zh.md). [PR #459](https://github.com/kohya-ss/sd-scripts/pull/459) Thanks to tomj2ee!
-- Added [documentation](./gen_img_README-ja.md) for image generation script `gen_img_diffusers.py` (Japanese version only).
-- 中国語版の[DreamBoothガイド](./train_db_README-zh.md)と[LoRAガイド](./train_network_README-zh.md)が追加されました。 [PR #459](https://github.com/kohya-ss/sd-scripts/pull/459) tomj2ee氏に感謝します。
-- 画像生成スクリプト `gen_img_diffusers.py`の簡単な[ドキュメント](./gen_img_README-ja.md)を追加しました（日本語版のみ）。 
+- Prodigy optimizer is supported in each training script. It is a member of D-Adaptation and is effective for DyLoRA training. [PR #585](https://github.com/kohya-ss/sd-scripts/pull/585) Please see the PR for details. Thanks to sdbds!
+  - Install the package with `pip install prodigyopt`. Then specify the option like `--optimizer_type="prodigy"`.
+- Arbitrary Dataset is supported in each training script (except XTI). You can use it by defining a Dataset class that returns images and captions.
+  - Prepare a Python script and define a class that inherits `train_util.MinimalDataset`. Then specify the option like `--dataset_class package.module.DatasetClass` in each training script.
+  - Please refer to `MinimalDataset` for implementation. I will prepare a sample later.
+- The following features have been added to the generation script.
+  - Added an option `--highres_fix_disable_control_net` to disable ControlNet in the 2nd stage of Highres. Fix. Please try it if the image is disturbed by some ControlNet such as Canny.
+  - Added Variants similar to sd-dynamic-propmpts in the prompt.
+    - If you specify `{spring|summer|autumn|winter}`, one of them will be randomly selected.
+    - If you specify `{2$$chocolate|vanilla|strawberry}`, two of them will be randomly selected.
+    - If you specify `{1-2$$ and $$chocolate|vanilla|strawberry}`, one or two of them will be randomly selected and connected by ` and `.
+    - You can specify the number of candidates in the range `0-2`. You cannot omit one side like `-2` or `1-`.
+    - It can also be specified for the prompt option.
+    - If you specify `e` or `E`, all candidates will be selected and the prompt will be repeated multiple times (`--images_per_prompt` is ignored). It may be useful for creating X/Y plots.
+    - You can also specify `--am {e$$0.2|0.4|0.6|0.8|1.0},{e$$0.4|0.7|1.0} --d 1234`. In this case, 15 prompts will be generated with 5*3.
+    - There is no weighting function.
 
-### 26 Apr. 2023, 2023/04/26
+- 各学習スクリプトでProdigyオプティマイザがサポートされました。D-Adaptationの仲間でDyLoRAの学習に有効とのことです。 [PR #585](https://github.com/kohya-ss/sd-scripts/pull/585)  詳細はPRをご覧ください。sdbds氏に感謝します。
+  - `pip install prodigyopt` としてパッケージをインストールしてください。また `--optimizer_type="prodigy"` のようにオプションを指定します。
+- 各学習スクリプトで任意のDatasetをサポートしました（XTIを除く）。画像とキャプションを返すDatasetクラスを定義することで、学習スクリプトから利用できます。
+  - Pythonスクリプトを用意し、`train_util.MinimalDataset`を継承するクラスを定義してください。そして各学習スクリプトのオプションで `--dataset_class package.module.DatasetClass` のように指定してください。
+  - 実装方法は `MinimalDataset` を参考にしてください。のちほどサンプルを用意します。
+- 生成スクリプトに以下の機能追加を行いました。
+  - Highres. Fixの2nd stageでControlNetを無効化するオプション `--highres_fix_disable_control_net` を追加しました。Canny等一部のControlNetで画像が乱れる場合にお試しください。
+  - プロンプトでsd-dynamic-propmptsに似たVariantをサポートしました。
+    - `{spring|summer|autumn|winter}` のように指定すると、いずれかがランダムに選択されます。
+    - `{2$$chocolate|vanilla|strawberry}` のように指定すると、いずれか2個がランダムに選択されます。
+    - `{1-2$$ and $$chocolate|vanilla|strawberry}` のように指定すると、1個か2個がランダムに選択され ` and ` で接続されます。
+    - 個数のレンジ指定では`0-2`のように0個も指定可能です。`-2`や`1-`のような片側の省略はできません。
+    - プロンプトオプションに対しても指定可能です。
+    - `{e$$chocolate|vanilla|strawberry}` のように`e`または`E`を指定すると、すべての候補が選択されプロンプトが複数回繰り返されます（`--images_per_prompt`は無視されます）。X/Y plotの作成に便利かもしれません。
+    - `--am {e$$0.2|0.4|0.6|0.8|1.0},{e$$0.4|0.7|1.0} --d 1234`のような指定も可能です。この場合、5*3で15回のプロンプトが生成されます。
+    - Weightingの機能はありません。
 
-- Added [Chinese translation](./train_README-zh.md) of training guide. [PR #445](https://github.com/kohya-ss/sd-scripts/pull/445) Thanks to tomj2ee!
-- `tag_images_by_wd14_tagger.py` can now get arguments from outside. [PR #453](https://github.com/kohya-ss/sd-scripts/pull/453) Thanks to mio2333!
-- 学習に関するドキュメントの[中国語版](./train_README-zh.md)が追加されました。 [PR #445](https://github.com/kohya-ss/sd-scripts/pull/445) tomj2ee氏に感謝します。
-- `tag_images_by_wd14_tagger.py`の引数を外部から取得できるようになりました。 [PR #453](https://github.com/kohya-ss/sd-scripts/pull/453) mio2333氏に感謝します。
+### 8 Jun. 2023, 2023/06/08
 
-### 25 Apr. 2023, 2023/04/25
+- Fixed a bug where clip skip did not work when training with weighted captions (`--weighted_captions` specified) and when generating sample images during training.
+- 重みづけキャプションでの学習時（`--weighted_captions`指定時）および学習中のサンプル画像生成時にclip skipが機能しない不具合を修正しました。
 
-- Please do not update for a while if you cannot revert the repository to the previous version when something goes wrong, because the model saving part has been changed.
-- Added `--save_every_n_steps` option to each training script. The model is saved every specified steps.
-  - `--save_last_n_steps` option can be used to save only the specified number of models (old models will be deleted).
-  - If you specify the `--save_state` option, the state will also be saved at the same time. You can specify the number of steps to keep the state with the `--save_last_n_steps_state` option (the same value as `--save_last_n_steps` is used if omitted).
-  - You can use the epoch-based model saving and state saving options together.
-  - Not tested in multi-GPU environment. Please report any bugs.
-- `--cache_latents_to_disk` option automatically enables `--cache_latents` option when specified. [#438](https://github.com/kohya-ss/sd-scripts/issues/438)
-- Fixed a bug in `gen_img_diffusers.py` where latents upscaler would fail with a batch size of 2 or more.
-  
-- モデル保存部分を変更していますので、何か不具合が起きた時にリポジトリを前のバージョンに戻せない場合には、しばらく更新を控えてください。
-- 各学習スクリプトに`--save_every_n_steps`オプションを追加しました。指定ステップごとにモデルを保存します。
-  - `--save_last_n_steps`オプションに数値を指定すると、そのステップ数のモデルのみを保存します（古いモデルは削除されます）。
-  - `--save_state`オプションを指定するとstateも同時に保存します。`--save_last_n_steps_state`オプションでstateを残すステップ数を指定できます（省略時は`--save_last_n_steps`と同じ値が使われます）。
-  - エポックごとのモデル保存、state保存のオプションと共存できます。
-  - マルチGPU環境でのテストを行っていないため、不具合等あればご報告ください。
-- `--cache_latents_to_disk`オプションが指定されたとき、`--cache_latents`オプションが自動的に有効になるようにしました。 [#438](https://github.com/kohya-ss/sd-scripts/issues/438)
-- `gen_img_diffusers.py`でlatents upscalerがバッチサイズ2以上でエラーとなる不具合を修正しました。
+### 6 Jun. 2023, 2023/06/06
 
+- Fix `train_network.py` to probably work with older versions of LyCORIS.
+- `gen_img_diffusers.py` now supports `BREAK` syntax.
+- `train_network.py`がLyCORISの以前のバージョンでも恐らく動作するよう修正しました。
+- `gen_img_diffusers.py` で `BREAK` 構文をサポートしました。
+
+### 3 Jun. 2023, 2023/06/03
+
+- Max Norm Regularization is now available in `train_network.py`. [PR #545](https://github.com/kohya-ss/sd-scripts/pull/545) Thanks to AI-Casanova!
+  - Max Norm Regularization is a technique to stabilize network training by limiting the norm of network weights. It may be effective in suppressing overfitting of LoRA and improving stability when used with other LoRAs. See PR for details.
+  - Specify as `--scale_weight_norms=1.0`. It seems good to try from `1.0`.
+  - The networks other than LoRA in this repository (such as LyCORIS) do not support this option.
+
+- Three types of dropout have been added to `train_network.py` and LoRA network.
+  - Dropout is a technique to suppress overfitting and improve network performance by randomly setting some of the network outputs to 0.
+  - `--network_dropout` is a normal dropout at the neuron level. In the case of LoRA, it is applied to the output of down. Proposed in [PR #545](https://github.com/kohya-ss/sd-scripts/pull/545) Thanks to AI-Casanova!
+    - `--network_dropout=0.1` specifies the dropout probability to `0.1`.
+    - Note that the specification method is different from LyCORIS.
+  - For LoRA network, `--network_args` can specify `rank_dropout` to dropout each rank with specified probability. Also `module_dropout` can be specified to dropout each module with specified probability.
+    - Specify as `--network_args "rank_dropout=0.2" "module_dropout=0.1"`.
+  - `--network_dropout`, `rank_dropout`, and `module_dropout` can be specified at the same time.
+  - Values of 0.1 to 0.3 may be good to try. Values greater than 0.5 should not be specified.
+  - `rank_dropout` and `module_dropout` are original techniques of this repository. Their effectiveness has not been verified yet.
+  - The networks other than LoRA in this repository (such as LyCORIS) do not support these options.
+
+- Added an option `--scale_v_pred_loss_like_noise_pred` to scale v-prediction loss like noise prediction in each training script.
+  - By scaling the loss according to the time step, the weights of global noise prediction and local noise prediction become the same, and the improvement of details may be expected.
+  - See [this article](https://xrg.hatenablog.com/entry/2023/06/02/202418) by xrg for details (written in Japanese). Thanks to xrg for the great suggestion!
+
+- Max Norm Regularizationが`train_network.py`で使えるようになりました。[PR #545](https://github.com/kohya-ss/sd-scripts/pull/545) AI-Casanova氏に感謝します。
+  - Max Norm Regularizationは、ネットワークの重みのノルムを制限することで、ネットワークの学習を安定させる手法です。LoRAの過学習の抑制、他のLoRAと併用した時の安定性の向上が期待できるかもしれません。詳細はPRを参照してください。
+  - `--scale_weight_norms=1.0`のように `--scale_weight_norms` で指定してください。`1.0`から試すと良いようです。
+  - LyCORIS等、当リポジトリ以外のネットワークは現時点では未対応です。
+
+- `train_network.py` およびLoRAに計三種類のdropoutを追加しました。
+  - dropoutはネットワークの一部の出力をランダムに0にすることで、過学習の抑制、ネットワークの性能向上等を図る手法です。
+  - `--network_dropout` はニューロン単位の通常のdropoutです。LoRAの場合、downの出力に対して適用されます。[PR #545](https://github.com/kohya-ss/sd-scripts/pull/545) で提案されました。AI-Casanova氏に感謝します。
+    - `--network_dropout=0.1` などとすることで、dropoutの確率を指定できます。
+    - LyCORISとは指定方法が異なりますのでご注意ください。
+  - LoRAの場合、`--network_args`に`rank_dropout`を指定することで各rankを指定確率でdropoutします。また同じくLoRAの場合、`--network_args`に`module_dropout`を指定することで各モジュールを指定確率でdropoutします。
+    - `--network_args "rank_dropout=0.2" "module_dropout=0.1"` のように指定します。
+  - `--network_dropout`、`rank_dropout` 、 `module_dropout` は同時に指定できます。
+  - それぞれの値は0.1~0.3程度から試してみると良いかもしれません。0.5を超える値は指定しない方が良いでしょう。
+  - `rank_dropout`および`module_dropout`は当リポジトリ独自の手法です。有効性の検証はまだ行っていません。
+  - これらのdropoutはLyCORIS等、当リポジトリ以外のネットワークは現時点では未対応です。
+
+- 各学習スクリプトにv-prediction lossをnoise predictionと同様の値にスケールするオプション`--scale_v_pred_loss_like_noise_pred`を追加しました。
+  - タイムステップに応じてlossをスケールすることで、 大域的なノイズの予測と局所的なノイズの予測の重みが同じになり、ディテールの改善が期待できるかもしれません。
+  - 詳細はxrg氏のこちらの記事をご参照ください：[noise_predictionモデルとv_predictionモデルの損失 - 勾配降下党青年局](https://xrg.hatenablog.com/entry/2023/06/02/202418) xrg氏の素晴らしい記事に感謝します。
+
+### 31 May 2023, 2023/05/31
+
+- Show warning when image caption file does not exist during training. [PR #533](https://github.com/kohya-ss/sd-scripts/pull/533) Thanks to TingTingin!
+  - Warning is also displayed when using class+identifier dataset. Please ignore if it is intended.
+- `train_network.py` now supports merging network weights before training. [PR #542](https://github.com/kohya-ss/sd-scripts/pull/542) Thanks to u-haru!
+  - `--base_weights` option specifies LoRA or other model files (multiple files are allowed) to merge.
+  - `--base_weights_multiplier` option specifies multiplier of the weights to merge (multiple values are allowed). If omitted or less than `base_weights`, 1.0 is used.
+  - This is useful for incremental learning. See PR for details.
+- Show warning and continue training when uploading to HuggingFace fails.
+
+- 学習時に画像のキャプションファイルが存在しない場合、警告が表示されるようになりました。 [PR #533](https://github.com/kohya-ss/sd-scripts/pull/533) TingTingin氏に感謝します。
+  - class+identifier方式のデータセットを利用している場合も警告が表示されます。意図している通りの場合は無視してください。
+- `train_network.py` に学習前にモデルにnetworkの重みをマージする機能が追加されました。 [PR #542](https://github.com/kohya-ss/sd-scripts/pull/542) u-haru氏に感謝します。
+  - `--base_weights` オプションでLoRA等のモデルファイル（複数可）を指定すると、それらの重みをマージします。
+  - `--base_weights_multiplier` オプションでマージする重みの倍率（複数可）を指定できます。省略時または`base_weights`よりも数が少ない場合は1.0になります。
+  - 差分追加学習などにご利用ください。詳細はPRをご覧ください。
+- HuggingFaceへのアップロードに失敗した場合、警告を表示しそのまま学習を続行するよう変更しました。
+
+### 25 May 2023, 2023/05/25
+
+- [D-Adaptation v3.0](https://github.com/facebookresearch/dadaptation) is now supported. [PR #530](https://github.com/kohya-ss/sd-scripts/pull/530) Thanks to sdbds!
+  - `--optimizer_type` now accepts `DAdaptAdamPreprint`, `DAdaptAdanIP`, and `DAdaptLion`.
+  - `DAdaptAdam` is now new. The old `DAdaptAdam` is available with `DAdaptAdamPreprint`.
+  - Simply specifying `DAdaptation` will use `DAdaptAdamPreprint` (same behavior as before).
+  - You need to install D-Adaptation v3.0. After activating venv, please do `pip install -U dadaptation`.
+  - See PR and D-Adaptation documentation for details.
+- [D-Adaptation v3.0](https://github.com/facebookresearch/dadaptation)がサポートされました。 [PR #530](https://github.com/kohya-ss/sd-scripts/pull/530)  sdbds氏に感謝します。
+  - `--optimizer_type`に`DAdaptAdamPreprint`、`DAdaptAdanIP`、`DAdaptLion` が追加されました。
+  - `DAdaptAdam`が新しくなりました。今までの`DAdaptAdam`は`DAdaptAdamPreprint`で使用できます。
+  - 単に `DAdaptation` を指定すると`DAdaptAdamPreprint`が使用されます（今までと同じ動き）。
+  - D-Adaptation v3.0のインストールが必要です。venvを有効にした後 `pip install -U dadaptation` としてください。
+  - 詳細はPRおよびD-Adaptationのドキュメントを参照してください。
+
+### 22 May 2023, 2023/05/22
+
+- Fixed several bugs.
+  - The state is saved even when the `--save_state` option is not specified in `fine_tune.py` and `train_db.py`. [PR #521](https://github.com/kohya-ss/sd-scripts/pull/521) Thanks to akshaal!
+  - Cannot load LoRA without `alpha`. [PR #527](https://github.com/kohya-ss/sd-scripts/pull/527) Thanks to Manjiz!
+  - Minor changes to console output during sample generation. [PR #515](https://github.com/kohya-ss/sd-scripts/pull/515) Thanks to yanhuifair!
+- The generation script now uses xformers for VAE as well.
+- いくつかのバグ修正を行いました。
+  -  `fine_tune.py`と`train_db.py`で`--save_state`オプション未指定時にもstateが保存される。 [PR #521](https://github.com/kohya-ss/sd-scripts/pull/521) akshaal氏に感謝します。
+  - `alpha`を持たないLoRAを読み込めない。[PR #527](https://github.com/kohya-ss/sd-scripts/pull/527) Manjiz氏に感謝します。
+  - サンプル生成時のコンソール出力の軽微な変更。[PR #515](https://github.com/kohya-ss/sd-scripts/pull/515) yanhuifair氏に感謝します。
+- 生成スクリプトでVAEについてもxformersを使うようにしました。
+
+### 16 May 2023, 2023/05/16
+
+- Fixed an issue where an error would occur if the encoding of the prompt file was different from the default. [PR #510](https://github.com/kohya-ss/sd-scripts/pull/510) Thanks to sdbds!
+  - Please save the prompt file in UTF-8.
+- プロンプトファイルのエンコーディングがデフォルトと異なる場合にエラーが発生する問題を修正しました。 [PR #510](https://github.com/kohya-ss/sd-scripts/pull/510) sdbds氏に感謝します。
+  - プロンプトファイルはUTF-8で保存してください。
+
+### 15 May 2023, 2023/05/15
+
+- Added [English translation of documents](https://github.com/darkstorm2150/sd-scripts#links-to-usage-documentation) by darkstorm2150. Thank you very much!
+- The prompt for sample generation during training can now be specified in `.toml` or `.json`. [PR #504](https://github.com/kohya-ss/sd-scripts/pull/504) Thanks to Linaqruf!
+  - For details on prompt description, please see the PR.
+
+- darkstorm2150氏に[ドキュメント類を英訳](https://github.com/darkstorm2150/sd-scripts#links-to-usage-documentation)していただきました。ありがとうございます！
+- 学習中のサンプル生成のプロンプトを`.toml`または`.json`で指定可能になりました。 [PR #504](https://github.com/kohya-ss/sd-scripts/pull/504) Linaqruf氏に感謝します。
+  - プロンプト記述の詳細は当該PRをご覧ください。
+
+### 11 May 2023, 2023/05/11
+
+- Added an option `--dim_from_weights` to `train_network.py` to automatically determine the dim(rank) from the weight file. [PR #491](https://github.com/kohya-ss/sd-scripts/pull/491) Thanks to AI-Casanova!
+  - It is useful in combination with `resize_lora.py`. Please see the PR for details.
+- Fixed a bug where the noise resolution was incorrect with Multires noise. [PR #489](https://github.com/kohya-ss/sd-scripts/pull/489) Thanks to sdbds!
+  - Please see the PR for details.
+- The image generation scripts can now use img2img and highres fix at the same time.
+- Fixed a bug where the hint image of ControlNet was incorrectly BGR instead of RGB in the image generation scripts.
+- Added a feature to the image generation scripts to use the memory-efficient VAE.
+  - If you specify a number with the `--vae_slices` option, the memory-efficient VAE will be used. The maximum output size will be larger, but it will be slower. Please specify a value of about `16` or `32`.
+  - The implementation of the VAE is in `library/slicing_vae.py`.
+
+- `train_network.py`にdim(rank)を重みファイルから自動決定するオプション`--dim_from_weights`が追加されました。 [PR #491](https://github.com/kohya-ss/sd-scripts/pull/491) AI-Casanova氏に感謝します。
+  - `resize_lora.py`と組み合わせると有用です。詳細はPRもご参照ください。
+- Multires noiseでノイズ解像度が正しくない不具合が修正されました。 [PR #489](https://github.com/kohya-ss/sd-scripts/pull/489)  sdbds氏に感謝します。
+  - 詳細は当該PRをご参照ください。
+- 生成スクリプトでimg2imgとhighres fixを同時に使用できるようにしました。
+- 生成スクリプトでControlNetのhint画像が誤ってBGRだったのをRGBに修正しました。
+- 生成スクリプトで省メモリ化VAEを使えるよう機能追加しました。
+  - `--vae_slices`オプションに数値を指定すると、省メモリ化VAEを用います。出力可能な最大サイズが大きくなりますが、遅くなります。`16`または`32`程度の値を指定してください。
+  - VAEの実装は`library/slicing_vae.py`にあります。
+
+### 7 May 2023, 2023/05/07
+
+- The documentation has been moved to the `docs` folder. If you have links, please change them.
+- Removed `gradio` from `requirements.txt`.
+- DAdaptAdaGrad, DAdaptAdan, and DAdaptSGD are now supported by DAdaptation. [PR#455](https://github.com/kohya-ss/sd-scripts/pull/455) Thanks to sdbds!
+  - DAdaptation needs to be installed. Also, depending on the optimizer, DAdaptation may need to be updated. Please update with `pip install --upgrade dadaptation`.
+- Added support for pre-calculation of LoRA weights in image generation scripts. Specify `--network_pre_calc`.
+  - The prompt option `--am` is available. Also, it is disabled when Regional LoRA is used.
+- Added Adaptive noise scale to each training script. Specify a number with `--adaptive_noise_scale` to enable it.
+  - __Experimental option. It may be removed or changed in the future.__
+  - This is an original implementation that automatically adjusts the value of the noise offset according to the absolute value of the mean of each channel of the latents. It is expected that appropriate noise offsets will be set for bright and dark images, respectively.
+  - Specify it together with `--noise_offset`.
+  - The actual value of the noise offset is calculated as `noise_offset + abs(mean(latents, dim=(2,3))) * adaptive_noise_scale`. Since the latent is close to a normal distribution, it may be a good idea to specify a value of about 1/10 to the same as the noise offset.
+  - Negative values can also be specified, in which case the noise offset will be clipped to 0 or more.
+- Other minor fixes.
+
+- ドキュメントを`docs`フォルダに移動しました。リンク等を張られている場合は変更をお願いいたします。
+- `requirements.txt`から`gradio`を削除しました。
+- DAdaptationで新しくDAdaptAdaGrad、DAdaptAdan、DAdaptSGDがサポートされました。[PR#455](https://github.com/kohya-ss/sd-scripts/pull/455) sdbds氏に感謝します。
+  - dadaptationのインストールが必要です。またオプティマイザによってはdadaptationの更新が必要です。`pip install --upgrade dadaptation`で更新してください。
+- 画像生成スクリプトでLoRAの重みの事前計算をサポートしました。`--network_pre_calc`を指定してください。
+  - プロンプトオプションの`--am`が利用できます。またRegional LoRA使用時には無効になります。
+- 各学習スクリプトにAdaptive noise scaleを追加しました。`--adaptive_noise_scale`で数値を指定すると有効になります。
+  - __実験的オプションです。将来的に削除、仕様変更される可能性があります。__
+  - Noise offsetの値を、latentsの各チャネルの平均値の絶対値に応じて自動調整するオプションです。独自の実装で、明るい画像、暗い画像に対してそれぞれ適切なnoise offsetが設定されることが期待されます。
+  - `--noise_offset` と同時に指定してください。
+  - 実際のNoise offsetの値は `noise_offset + abs(mean(latents, dim=(2,3))) * adaptive_noise_scale` で計算されます。 latentは正規分布に近いためnoise_offsetの1/10～同程度の値を指定するとよいかもしれません。
+  - 負の値も指定でき、その場合はnoise offsetは0以上にclipされます。
+- その他の細かい修正を行いました。
 
 Please read [Releases](https://github.com/kohya-ss/sd-scripts/releases) for recent updates.
 最近の更新情報は [Release](https://github.com/kohya-ss/sd-scripts/releases) をご覧ください。
@@ -180,7 +364,7 @@ The LoRA supported by `train_network.py` has been named to avoid confusion. The
     
 LoRA-LierLa is the default LoRA type for `train_network.py` (without `conv_dim` network arg). LoRA-LierLa can be used with [our extension](https://github.com/kohya-ss/sd-webui-additional-networks) for AUTOMATIC1111's Web UI, or with the built-in LoRA feature of the Web UI.
 
-To use LoRA-C3Liar with Web UI, please use our extension.
+To use LoRA-C3Lier with Web UI, please use our extension.
 
 ### LoRAの名称について
 
@@ -196,7 +380,7 @@ To use LoRA-C3Liar with Web UI, please use our extension.
 
 LoRA-LierLa は[Web UI向け拡張](https://github.com/kohya-ss/sd-webui-additional-networks)、またはAUTOMATIC1111氏のWeb UIのLoRA機能で使用することができます。
 
-LoRA-C3Liarを使いWeb UIで生成するには拡張を使用してください。
+LoRA-C3Lierを使いWeb UIで生成するには拡張を使用してください。
 
 ## Sample image generation during training
   A prompt file might look like this, for example

docs/gen_img_README-ja.md

@@ -153,7 +153,9 @@ python gen_img_diffusers.py --ckpt <モデル名> --outdir <画像出力先>
 
 - `--network_mul`：使用する追加ネットワークの重みを何倍にするかを指定します。デフォルトは`1`です。`--network_mul 0.8`のように指定します。複数のLoRAを使用する場合は`--network_mul 0.4 0.5 0.7`のように指定します。引数の数は`--network_module`で指定した数と同じにしてください。
 
-- `--network_merge`：使用する追加ネットワークの重みを`--network_mul`に指定した重みであらかじめマージします。プロンプトオプションの`--am`は使用できなくなりますが、LoRA未使用時と同じ程度まで生成が高速化されます。
+- `--network_merge`：使用する追加ネットワークの重みを`--network_mul`に指定した重みであらかじめマージします。`--network_pre_calc` と同時に使用できません。プロンプトオプションの`--am`、およびRegional LoRAは使用できなくなりますが、LoRA未使用時と同じ程度まで生成が高速化されます。
+
+- `--network_pre_calc`：使用する追加ネットワークの重みを生成ごとにあらかじめ計算します。プロンプトオプションの`--am`が使用できます。LoRA未使用時と同じ程度まで生成は高速化されますが、生成前に重みを計算する時間が必要で、またメモリ使用量も若干増加します。Regional LoRA使用時は無効になります 。
 
 # 主なオプションの指定例
 

docs/train_README-ja.md

@@ -463,27 +463,6 @@ masterpiece, best quality, 1boy, in business suit, standing at street, looking b
 
     xformersオプションを指定するとxformersのCrossAttentionを用います。xformersをインストールしていない場合やエラーとなる場合（環境にもよりますが `mixed_precision="no"` の場合など）、代わりに `mem_eff_attn` オプションを指定すると省メモリ版CrossAttentionを使用します（xformersよりも速度は遅くなります）。
 
-- `--save_precision`
-
-    保存時のデータ精度を指定します。save_precisionオプションにfloat、fp16、bf16のいずれかを指定すると、その形式でモデルを保存します（DreamBooth、fine tuningでDiffusers形式でモデルを保存する場合は無効です）。モデルのサイズを削減したい場合などにお使いください。
-
-- `--save_every_n_epochs` / `--save_state` / `--resume`
-    save_every_n_epochsオプションに数値を指定すると、そのエポックごとに学習途中のモデルを保存します。
-
-    save_stateオプションを同時に指定すると、optimizer等の状態も含めた学習状態を合わせて保存します（保存したモデルからも学習再開できますが、それに比べると精度の向上、学習時間の短縮が期待できます）。保存先はフォルダになります。
-    
-    学習状態は保存先フォルダに `<output_name>-??????-state`（??????はエポック数）という名前のフォルダで出力されます。長時間にわたる学習時にご利用ください。
-
-    保存された学習状態から学習を再開するにはresumeオプションを使います。学習状態のフォルダ（`output_dir` ではなくその中のstateのフォルダ）を指定してください。
-
-    なおAcceleratorの仕様により、エポック数、global stepは保存されておらず、resumeしたときにも1からになりますがご容赦ください。
-
-- `--save_model_as` （DreamBooth, fine tuning のみ）
-
-    モデルの保存形式を`ckpt, safetensors, diffusers, diffusers_safetensors` から選べます。
-    
-    `--save_model_as=safetensors` のように指定します。Stable Diffusion形式（ckptまたはsafetensors）を読み込み、Diffusers形式で保存する場合、不足する情報はHugging Faceからv1.5またはv2.1の情報を落としてきて補完します。
-    
 - `--clip_skip`
     
     `2` を指定すると、Text Encoder (CLIP) の後ろから二番目の層の出力を用います。1またはオプション省略時は最後の層を用います。
@@ -502,6 +481,12 @@ masterpiece, best quality, 1boy, in business suit, standing at street, looking b
 
     clip_skipと同様に、モデルの学習状態と異なる長さで学習するには、ある程度の教師データ枚数、長めの学習時間が必要になると思われます。
 
+- `--weighted_captions`
+
+    指定するとAutomatic1111氏のWeb UIと同様の重み付きキャプションが有効になります。「Textual Inversion と XTI」以外の学習に使用できます。キャプションだけでなく DreamBooth 手法の token string でも有効です。
+
+    重みづけキャプションの記法はWeb UIとほぼ同じで、(abc)や[abc]、(abc:1.23)などが使用できます。入れ子も可能です。括弧内にカンマを含めるとプロンプトのshuffle/dropoutで括弧の対応付けがおかしくなるため、括弧内にはカンマを含めないでください。
+
 - `--persistent_data_loader_workers`
 
     Windows環境で指定するとエポック間の待ち時間が大幅に短縮されます。
@@ -527,12 +512,28 @@ masterpiece, best quality, 1boy, in business suit, standing at street, looking b
 
     その後ブラウザを開き、http://localhost:6006/ へアクセスすると表示されます。
 
+- `--log_with` / `--log_tracker_name`
+
+    学習ログの保存に関するオプションです。`tensorboard` だけでなく `wandb`への保存が可能です。詳細は [PR#428](https://github.com/kohya-ss/sd-scripts/pull/428)をご覧ください。
+
 - `--noise_offset`
 
     こちらの記事の実装になります: https://www.crosslabs.org//blog/diffusion-with-offset-noise
     
     全体的に暗い、明るい画像の生成結果が良くなる可能性があるようです。LoRA学習でも有効なようです。`0.1` 程度の値を指定するとよいようです。
 
+- `--adaptive_noise_scale` （実験的オプション）
+
+    Noise offsetの値を、latentsの各チャネルの平均値の絶対値に応じて自動調整するオプションです。`--noise_offset` と同時に指定することで有効になります。Noise offsetの値は `noise_offset + abs(mean(latents, dim=(2,3))) * adaptive_noise_scale` で計算されます。latentは正規分布に近いためnoise_offsetの1/10～同程度の値を指定するとよいかもしれません。
+
+    負の値も指定でき、その場合はnoise offsetは0以上にclipされます。
+
+- `--multires_noise_iterations` / `--multires_noise_discount`
+    
+    Multi resolution noise (pyramid noise)の設定です。詳細は [PR#471](https://github.com/kohya-ss/sd-scripts/pull/471) およびこちらのページ [Multi-Resolution Noise for Diffusion Model Training](https://wandb.ai/johnowhitaker/multires_noise/reports/Multi-Resolution-Noise-for-Diffusion-Model-Training--VmlldzozNjYyOTU2) を参照してください。
+    
+    `--multires_noise_iterations` に数値を指定すると有効になります。6~10程度の値が良いようです。`--multires_noise_discount` に0.1~0.3 程度の値（LoRA学習等比較的データセットが小さい場合のPR作者の推奨）、ないしは0.8程度の値（元記事の推奨）を指定してください（デフォルトは 0.3）。
+
 - `--debug_dataset`
 
     このオプションを付けることで学習を行う前に事前にどのような画像データ、キャプションで学習されるかを確認できます。Escキーを押すと終了してコマンドラインに戻ります。`S`キーで次のステップ（バッチ）、`E`キーで次のエポックに進みます。
@@ -545,14 +546,62 @@ masterpiece, best quality, 1boy, in business suit, standing at street, looking b
 
     DreamBoothおよびfine tuningでは、保存されるモデルはこのVAEを組み込んだものになります。
 
-- `--cache_latents`
+- `--cache_latents` / `--cache_latents_to_disk`
 
     使用VRAMを減らすためVAEの出力をメインメモリにキャッシュします。`flip_aug` 以外のaugmentationは使えなくなります。また全体の学習速度が若干速くなります。
 
+    cache_latents_to_diskを指定するとキャッシュをディスクに保存します。スクリプトを終了し、再度起動した場合もキャッシュが有効になります。
+
 - `--min_snr_gamma`
 
     Min-SNR Weighting strategyを指定します。詳細は[こちら](https://github.com/kohya-ss/sd-scripts/pull/308)を参照してください。論文では`5`が推奨されています。
 
+## モデルの保存に関する設定
+
+- `--save_precision`
+
+    保存時のデータ精度を指定します。save_precisionオプションにfloat、fp16、bf16のいずれかを指定すると、その形式でモデルを保存します（DreamBooth、fine tuningでDiffusers形式でモデルを保存する場合は無効です）。モデルのサイズを削減したい場合などにお使いください。
+
+- `--save_every_n_epochs` / `--save_state` / `--resume`
+
+    save_every_n_epochsオプションに数値を指定すると、そのエポックごとに学習途中のモデルを保存します。
+
+    save_stateオプションを同時に指定すると、optimizer等の状態も含めた学習状態を合わせて保存します（保存したモデルからも学習再開できますが、それに比べると精度の向上、学習時間の短縮が期待できます）。保存先はフォルダになります。
+    
+    学習状態は保存先フォルダに `<output_name>-??????-state`（??????はエポック数）という名前のフォルダで出力されます。長時間にわたる学習時にご利用ください。
+
+    保存された学習状態から学習を再開するにはresumeオプションを使います。学習状態のフォルダ（`output_dir` ではなくその中のstateのフォルダ）を指定してください。
+
+    なおAcceleratorの仕様により、エポック数、global stepは保存されておらず、resumeしたときにも1からになりますがご容赦ください。
+
+- `--save_every_n_steps`
+
+    save_every_n_stepsオプションに数値を指定すると、そのステップごとに学習途中のモデルを保存します。save_every_n_epochsと同時に指定できます。
+
+- `--save_model_as` （DreamBooth, fine tuning のみ）
+
+    モデルの保存形式を`ckpt, safetensors, diffusers, diffusers_safetensors` から選べます。
+    
+    `--save_model_as=safetensors` のように指定します。Stable Diffusion形式（ckptまたはsafetensors）を読み込み、Diffusers形式で保存する場合、不足する情報はHugging Faceからv1.5またはv2.1の情報を落としてきて補完します。
+
+- `--huggingface_repo_id` 等
+
+    huggingface_repo_idが指定されているとモデル保存時に同時にHuggingFaceにアップロードします。アクセストークンの取り扱いに注意してください（HuggingFaceのドキュメントを参照してください）。
+
+    他の引数をたとえば以下のように指定してください。
+
+    -   `--huggingface_repo_id "your-hf-name/your-model" --huggingface_path_in_repo "path" --huggingface_repo_type model --huggingface_repo_visibility private --huggingface_token hf_YourAccessTokenHere`
+
+    huggingface_repo_visibilityに`public`を指定するとリポジトリが公開されます。省略時または`private`（などpublic以外）を指定すると非公開になります。
+
+    `--save_state`オプション指定時に`--save_state_to_huggingface`を指定するとstateもアップロードします。
+
+    `--resume`オプション指定時に`--resume_from_huggingface`を指定するとHuggingFaceからstateをダウンロードして再開します。その時の --resumeオプションは `--resume {repo_id}/{path_in_repo}:{revision}:{repo_type}`になります。
+    
+    例: `--resume_from_huggingface --resume your-hf-name/your-model/path/test-000002-state:main:model`
+
+    `--async_upload`オプションを指定するとアップロードを非同期で行います。
+
 ## オプティマイザ関係
 
 - `--optimizer_type`
@@ -563,9 +612,17 @@ masterpiece, best quality, 1boy, in business suit, standing at street, looking b
     - 過去のバージョンの--use_8bit_adam指定時と同じ
     - Lion : https://github.com/lucidrains/lion-pytorch
     - 過去のバージョンの--use_lion_optimizer指定時と同じ
+    - Lion8bit : 引数は同上
     - SGDNesterov : [torch.optim.SGD](https://pytorch.org/docs/stable/generated/torch.optim.SGD.html), nesterov=True
     - SGDNesterov8bit : 引数は同上
-    - DAdaptation : https://github.com/facebookresearch/dadaptation
+    - DAdaptation(DAdaptAdamPreprint) : https://github.com/facebookresearch/dadaptation
+    - DAdaptAdam : 引数は同上
+    - DAdaptAdaGrad : 引数は同上
+    - DAdaptAdan : 引数は同上
+    - DAdaptAdanIP : 引数は同上
+    - DAdaptLion : 引数は同上
+    - DAdaptSGD : 引数は同上
+    - Prodigy : https://github.com/konstmish/prodigy
     - AdaFactor : [Transformers AdaFactor](https://huggingface.co/docs/transformers/main_classes/optimizer_schedules)
     - 任意のオプティマイザ
 

docs/train_README-zh.md

@@ -550,8 +550,15 @@ masterpiece, best quality, 1boy, in business suit, standing at street, looking b
     - Lion : https://github.com/lucidrains/lion-pytorch
     - 与过去版本中指定的 --use_lion_optimizer 相同
     - SGDNesterov : [torch.optim.SGD](https://pytorch.org/docs/stable/generated/torch.optim.SGD.html), nesterov=True
-    - SGDNesterov8bit : 引数同上
-    - DAdaptation : https://github.com/facebookresearch/dadaptation
+    - SGDNesterov8bit : 参数同上
+    - DAdaptation(DAdaptAdamPreprint) : https://github.com/facebookresearch/dadaptation
+    - DAdaptAdam : 参数同上
+    - DAdaptAdaGrad : 参数同上
+    - DAdaptAdan : 参数同上
+    - DAdaptAdanIP : 参数同上
+    - DAdaptLion : 参数同上
+    - DAdaptSGD : 参数同上
+    - Prodigy : https://github.com/konstmish/prodigy
     - AdaFactor : [Transformers AdaFactor](https://huggingface.co/docs/transformers/main_classes/optimizer_schedules)
     - 任何优化器
 

docs/train_network_README-ja.md

@@ -276,7 +276,9 @@ python networks\merge_lora.py --sd_model ..\model\model.ckpt
 
 ### 複数のLoRAのモデルをマージする
 
-複数のLoRAモデルをひとつずつSDモデルに適用する場合と、複数のLoRAモデルをマージしてからSDモデルにマージする場合とは、計算順序の関連で微妙に異なる結果になります。
+__複数のLoRAをマージする場合は原則として `svd_merge_lora.py` を使用してください。__ 単純なup同士やdown同士のマージでは、計算結果が正しくなくなるためです。
+
+`merge_lora.py` によるマージは差分抽出法でLoRAを生成する場合等、ごく限られた場合でのみ有効です。
 
 たとえば以下のようなコマンドラインになります。
 
@@ -294,7 +296,7 @@ python networks\merge_lora.py
 
 --ratiosにそれぞれのモデルの比率（どのくらい重みを元モデルに反映するか）を0~1.0の数値で指定します。二つのモデルを一対一でマージす場合は、「0.5 0.5」になります。「1.0 1.0」では合計の重みが大きくなりすぎて、恐らく結果はあまり望ましくないものになると思われます。
 
-v1で学習したLoRAとv2で学習したLoRA、rank（次元数）や``alpha``の異なるLoRAはマージできません。U-NetだけのLoRAとU-Net+Text EncoderのLoRAはマージできるはずですが、結果は未知数です。
+v1で学習したLoRAとv2で学習したLoRA、rank（次元数）の異なるLoRAはマージできません。U-NetだけのLoRAとU-Net+Text EncoderのLoRAはマージできるはずですが、結果は未知数です。
 
 
 ### その他のオプション

fine_tune.py

@@ -21,7 +21,14 @@ from library.config_util import (
     BlueprintGenerator,
 )
 import library.custom_train_functions as custom_train_functions
-from library.custom_train_functions import apply_snr_weight, get_weighted_text_embeddings
+from library.custom_train_functions import (
+    apply_snr_weight,
+    get_weighted_text_embeddings,
+    prepare_scheduler_for_custom_training,
+    pyramid_noise_like,
+    apply_noise_offset,
+    scale_v_prediction_loss_like_noise_prediction,
+)
 
 
 def train(args):
@@ -35,33 +42,37 @@ def train(args):
 
     tokenizer = train_util.load_tokenizer(args)
 
-    blueprint_generator = BlueprintGenerator(ConfigSanitizer(False, True, True))
-    if args.dataset_config is not None:
-        print(f"Load dataset config from {args.dataset_config}")
-        user_config = config_util.load_user_config(args.dataset_config)
-        ignored = ["train_data_dir", "in_json"]
-        if any(getattr(args, attr) is not None for attr in ignored):
-            print(
-                "ignore following options because config file is found: {0} / 設定ファイルが利用されるため以下のオプションは無視されます: {0}".format(
-                    ", ".join(ignored)
+    # データセットを準備する
+    if args.dataset_class is None:
+        blueprint_generator = BlueprintGenerator(ConfigSanitizer(False, True, True))
+        if args.dataset_config is not None:
+            print(f"Load dataset config from {args.dataset_config}")
+            user_config = config_util.load_user_config(args.dataset_config)
+            ignored = ["train_data_dir", "in_json"]
+            if any(getattr(args, attr) is not None for attr in ignored):
+                print(
+                    "ignore following options because config file is found: {0} / 設定ファイルが利用されるため以下のオプションは無視されます: {0}".format(
+                        ", ".join(ignored)
+                    )
                 )
-            )
-    else:
-        user_config = {
-            "datasets": [
-                {
-                    "subsets": [
-                        {
-                            "image_dir": args.train_data_dir,
-                            "metadata_file": args.in_json,
-                        }
-                    ]
-                }
-            ]
-        }
+        else:
+            user_config = {
+                "datasets": [
+                    {
+                        "subsets": [
+                            {
+                                "image_dir": args.train_data_dir,
+                                "metadata_file": args.in_json,
+                            }
+                        ]
+                    }
+                ]
+            }
 
-    blueprint = blueprint_generator.generate(user_config, args, tokenizer=tokenizer)
-    train_dataset_group = config_util.generate_dataset_group_by_blueprint(blueprint.dataset_group)
+        blueprint = blueprint_generator.generate(user_config, args, tokenizer=tokenizer)
+        train_dataset_group = config_util.generate_dataset_group_by_blueprint(blueprint.dataset_group)
+    else:
+        train_dataset_group = train_util.load_arbitrary_dataset(args, tokenizer)
 
     current_epoch = Value("i", 0)
     current_step = Value("i", 0)
@@ -90,7 +101,7 @@ def train(args):
     weight_dtype, save_dtype = train_util.prepare_dtype(args)
 
     # モデルを読み込む
-    text_encoder, vae, unet, load_stable_diffusion_format = train_util.load_target_model(args, weight_dtype)
+    text_encoder, vae, unet, load_stable_diffusion_format = train_util.load_target_model(args, weight_dtype, accelerator)
 
     # verify load/save model formats
     if load_stable_diffusion_format:
@@ -228,6 +239,9 @@ def train(args):
     else:
         unet, optimizer, train_dataloader, lr_scheduler = accelerator.prepare(unet, optimizer, train_dataloader, lr_scheduler)
 
+    # transform DDP after prepare
+    text_encoder, unet = train_util.transform_if_model_is_DDP(text_encoder, unet)
+
     # 実験的機能：勾配も含めたfp16学習を行う　PyTorchにパッチを当ててfp16でのgrad scaleを有効にする
     if args.full_fp16:
         train_util.patch_accelerator_for_fp16_training(accelerator)
@@ -258,12 +272,13 @@ def train(args):
     noise_scheduler = DDPMScheduler(
         beta_start=0.00085, beta_end=0.012, beta_schedule="scaled_linear", num_train_timesteps=1000, clip_sample=False
     )
+    prepare_scheduler_for_custom_training(noise_scheduler, accelerator.device)
 
     if accelerator.is_main_process:
         accelerator.init_trackers("finetuning" if args.log_tracker_name is None else args.log_tracker_name)
 
     for epoch in range(num_train_epochs):
-        print(f"epoch {epoch+1}/{num_train_epochs}")
+        print(f"\nepoch {epoch+1}/{num_train_epochs}")
         current_epoch.value = epoch + 1
 
         for m in training_models:
@@ -302,8 +317,9 @@ def train(args):
                 # Sample noise that we'll add to the latents
                 noise = torch.randn_like(latents, device=latents.device)
                 if args.noise_offset:
-                    # https://www.crosslabs.org//blog/diffusion-with-offset-noise
-                    noise += args.noise_offset * torch.randn((latents.shape[0], latents.shape[1], 1, 1), device=latents.device)
+                    noise = apply_noise_offset(latents, noise, args.noise_offset, args.adaptive_noise_scale)
+                elif args.multires_noise_iterations:
+                    noise = pyramid_noise_like(noise, latents.device, args.multires_noise_iterations, args.multires_noise_discount)
 
                 # Sample a random timestep for each image
                 timesteps = torch.randint(0, noise_scheduler.config.num_train_timesteps, (b_size,), device=latents.device)
@@ -323,11 +339,16 @@ def train(args):
                 else:
                     target = noise
 
-                if args.min_snr_gamma:
-                    # do not mean over batch dimension for snr weight
+                if args.min_snr_gamma or args.scale_v_pred_loss_like_noise_pred:
+                    # do not mean over batch dimension for snr weight or scale v-pred loss
                     loss = torch.nn.functional.mse_loss(noise_pred.float(), target.float(), reduction="none")
                     loss = loss.mean([1, 2, 3])
-                    loss = apply_snr_weight(loss, timesteps, noise_scheduler, args.min_snr_gamma)
+
+                    if args.min_snr_gamma:
+                        loss = apply_snr_weight(loss, timesteps, noise_scheduler, args.min_snr_gamma)
+                    if args.scale_v_pred_loss_like_noise_pred:
+                        loss = scale_v_prediction_loss_like_noise_prediction(loss, timesteps, noise_scheduler)
+
                     loss = loss.mean()  # mean over batch dimension
                 else:
                     loss = torch.nn.functional.mse_loss(noise_pred.float(), target.float(), reduction="mean")
@@ -376,7 +397,7 @@ def train(args):
             current_loss = loss.detach().item()  # 平均なのでbatch sizeは関係ないはず
             if args.logging_dir is not None:
                 logs = {"loss": current_loss, "lr": float(lr_scheduler.get_last_lr()[0])}
-                if args.optimizer_type.lower() == "DAdaptation".lower():  # tracking d*lr value
+                if args.optimizer_type.lower().startswith("DAdapt".lower()) or args.optimizer_type.lower() == "Prodigy".lower():  # tracking d*lr value
                     logs["lr/d*lr"] = (
                         lr_scheduler.optimizers[0].param_groups[0]["d"] * lr_scheduler.optimizers[0].param_groups[0]["lr"]
                     )

finetune/make_captions.py

@@ -3,6 +3,7 @@ import glob
 import os
 import json
 import random
+import sys
 
 from pathlib import Path
 from PIL import Image
@@ -11,6 +12,7 @@ import numpy as np
 import torch
 from torchvision import transforms
 from torchvision.transforms.functional import InterpolationMode
+sys.path.append(os.path.dirname(__file__))
 from blip.blip import blip_decoder
 import library.train_util as train_util
 

gen_img_diffusers.py

@@ -46,6 +46,7 @@ VGG(
 )
 """
 
+import itertools
 import json
 from typing import Any, List, NamedTuple, Optional, Tuple, Union, Callable
 import glob
@@ -311,6 +312,7 @@ class FlashAttentionFunction(torch.autograd.Function):
         return dq, dk, dv, None, None, None, None
 
 
+# TODO common train_util.py
 def replace_unet_modules(unet: diffusers.models.unet_2d_condition.UNet2DConditionModel, mem_eff_attn, xformers):
     if mem_eff_attn:
         replace_unet_cross_attn_to_memory_efficient()
@@ -319,7 +321,7 @@ def replace_unet_modules(unet: diffusers.models.unet_2d_condition.UNet2DConditio
 
 
 def replace_unet_cross_attn_to_memory_efficient():
-    print("Replace CrossAttention.forward to use NAI style Hypernetwork and FlashAttention")
+    print("CrossAttention.forward has been replaced to FlashAttention (not xformers) and NAI style Hypernetwork")
     flash_func = FlashAttentionFunction
 
     def forward_flash_attn(self, x, context=None, mask=None):
@@ -359,7 +361,7 @@ def replace_unet_cross_attn_to_memory_efficient():
 
 
 def replace_unet_cross_attn_to_xformers():
-    print("Replace CrossAttention.forward to use NAI style Hypernetwork and xformers")
+    print("CrossAttention.forward has been replaced to enable xformers and NAI style Hypernetwork")
     try:
         import xformers.ops
     except ImportError:
@@ -401,6 +403,104 @@ def replace_unet_cross_attn_to_xformers():
     diffusers.models.attention.CrossAttention.forward = forward_xformers
 
 
+def replace_vae_modules(vae: diffusers.models.AutoencoderKL, mem_eff_attn, xformers):
+    if mem_eff_attn:
+        replace_vae_attn_to_memory_efficient()
+    elif xformers:
+        # とりあえずDiffusersのxformersを使う。AttentionがあるのはMidBlockのみ
+        print("Use Diffusers xformers for VAE")
+        vae.set_use_memory_efficient_attention_xformers(True)
+
+    """
+    # VAEがbfloat16でメモリ消費が大きい問題を解決する
+    upsamplers = []
+    for block in vae.decoder.up_blocks:
+        if block.upsamplers is not None:
+            upsamplers.extend(block.upsamplers)
+
+    def forward_upsample(_self, hidden_states, output_size=None):
+        assert hidden_states.shape[1] == _self.channels
+        if _self.use_conv_transpose:
+            return _self.conv(hidden_states)
+
+        dtype = hidden_states.dtype
+        if dtype == torch.bfloat16:
+            assert output_size is None
+            # repeat_interleaveはすごく遅いが、回数はあまり呼ばれないので許容する
+            hidden_states = hidden_states.repeat_interleave(2, dim=-1)
+            hidden_states = hidden_states.repeat_interleave(2, dim=-2)
+        else:
+            if hidden_states.shape[0] >= 64:
+                hidden_states = hidden_states.contiguous()
+
+            # if `output_size` is passed we force the interpolation output
+            # size and do not make use of `scale_factor=2`
+            if output_size is None:
+                hidden_states = torch.nn.functional.interpolate(hidden_states, scale_factor=2.0, mode="nearest")
+            else:
+                hidden_states = torch.nn.functional.interpolate(hidden_states, size=output_size, mode="nearest")
+
+        if _self.use_conv:
+            if _self.name == "conv":
+                hidden_states = _self.conv(hidden_states)
+            else:
+                hidden_states = _self.Conv2d_0(hidden_states)
+        return hidden_states
+
+    # replace upsamplers
+    for upsampler in upsamplers:
+        # make new scope
+        def make_replacer(upsampler):
+            def forward(hidden_states, output_size=None):
+                return forward_upsample(upsampler, hidden_states, output_size)
+
+            return forward
+
+        upsampler.forward = make_replacer(upsampler)
+"""
+
+
+def replace_vae_attn_to_memory_efficient():
+    print("AttentionBlock.forward has been replaced to FlashAttention (not xformers)")
+    flash_func = FlashAttentionFunction
+
+    def forward_flash_attn(self, hidden_states):
+        print("forward_flash_attn")
+        q_bucket_size = 512
+        k_bucket_size = 1024
+
+        residual = hidden_states
+        batch, channel, height, width = hidden_states.shape
+
+        # norm
+        hidden_states = self.group_norm(hidden_states)
+
+        hidden_states = hidden_states.view(batch, channel, height * width).transpose(1, 2)
+
+        # proj to q, k, v
+        query_proj = self.query(hidden_states)
+        key_proj = self.key(hidden_states)
+        value_proj = self.value(hidden_states)
+
+        query_proj, key_proj, value_proj = map(
+            lambda t: rearrange(t, "b n (h d) -> b h n d", h=self.num_heads), (query_proj, key_proj, value_proj)
+        )
+
+        out = flash_func.apply(query_proj, key_proj, value_proj, None, False, q_bucket_size, k_bucket_size)
+
+        out = rearrange(out, "b h n d -> b n (h d)")
+
+        # compute next hidden_states
+        hidden_states = self.proj_attn(hidden_states)
+        hidden_states = hidden_states.transpose(-1, -2).reshape(batch, channel, height, width)
+
+        # res connect and rescale
+        hidden_states = (hidden_states + residual) / self.rescale_output_factor
+        return hidden_states
+
+    diffusers.models.attention.AttentionBlock.forward = forward_flash_attn
+
+
 # endregion
 
 # region 画像生成の本体：lpw_stable_diffusion.py （ASL）からコピーして修正
@@ -515,11 +615,15 @@ class PipelineLike:
 
         # ControlNet
         self.control_nets: List[ControlNetInfo] = []
+        self.control_net_enabled = True  # control_netsが空ならTrueでもFalseでもControlNetは動作しない
 
     # Textual Inversion
     def add_token_replacement(self, target_token_id, rep_token_ids):
         self.token_replacements[target_token_id] = rep_token_ids
 
+    def set_enable_control_net(self, en: bool):
+        self.control_net_enabled = en
+
     def replace_token(self, tokens, layer=None):
         new_tokens = []
         for token in tokens:
@@ -955,7 +1059,7 @@ class PipelineLike:
                     if torch.cuda.is_available():
                         torch.cuda.empty_cache()
                     init_latents = []
-                    for i in tqdm(range(0, batch_size, vae_batch_size)):
+                    for i in tqdm(range(0, min(batch_size, len(init_image)), vae_batch_size)):
                         init_latent_dist = self.vae.encode(
                             init_image[i : i + vae_batch_size] if vae_batch_size > 1 else init_image[i].unsqueeze(0)
                         ).latent_dist
@@ -1012,7 +1116,7 @@ class PipelineLike:
             latent_model_input = self.scheduler.scale_model_input(latent_model_input, t)
 
             # predict the noise residual
-            if self.control_nets:
+            if self.control_nets and self.control_net_enabled:
                 if reginonal_network:
                     num_sub_and_neg_prompts = len(text_embeddings) // batch_size
                     text_emb_last = text_embeddings[num_sub_and_neg_prompts - 2 :: num_sub_and_neg_prompts]  # last subprompt
@@ -1696,6 +1800,9 @@ def parse_prompt_attention(text):
         for p in range(start_position, len(res)):
             res[p][1] *= multiplier
 
+    # keep break as separate token
+    text = text.replace("BREAK", "\\BREAK\\")
+
     for m in re_attention.finditer(text):
         text = m.group(0)
         weight = m.group(1)
@@ -1727,7 +1834,7 @@ def parse_prompt_attention(text):
     # merge runs of identical weights
     i = 0
     while i + 1 < len(res):
-        if res[i][1] == res[i + 1][1]:
+        if res[i][1] == res[i + 1][1] and res[i][0].strip() != "BREAK" and res[i + 1][0].strip() != "BREAK":
             res[i][0] += res[i + 1][0]
             res.pop(i + 1)
         else:
@@ -1744,11 +1851,25 @@ def get_prompts_with_weights(pipe: PipelineLike, prompt: List[str], max_length:
     tokens = []
     weights = []
     truncated = False
+
     for text in prompt:
         texts_and_weights = parse_prompt_attention(text)
         text_token = []
         text_weight = []
         for word, weight in texts_and_weights:
+            if word.strip() == "BREAK":
+                # pad until next multiple of tokenizer's max token length
+                pad_len = pipe.tokenizer.model_max_length - (len(text_token) % pipe.tokenizer.model_max_length)
+                print(f"BREAK pad_len: {pad_len}")
+                for i in range(pad_len):
+                    # v2のときEOSをつけるべきかどうかわからないぜ
+                    # if i == 0:
+                    #     text_token.append(pipe.tokenizer.eos_token_id)
+                    # else:
+                    text_token.append(pipe.tokenizer.pad_token_id)
+                    text_weight.append(1.0)
+                continue
+
             # tokenize and discard the starting and the ending token
             token = pipe.tokenizer(word).input_ids[1:-1]
 
@@ -2043,6 +2164,110 @@ def preprocess_mask(mask):
     return mask
 
 
+# regular expression for dynamic prompt:
+# starts and ends with "{" and "}"
+# contains at least one variant divided by "|"
+# optional framgments divided by "$$" at start
+# if the first fragment is "E" or "e", enumerate all variants
+# if the second fragment is a number or two numbers, repeat the variants in the range
+# if the third fragment is a string, use it as a separator
+
+RE_DYNAMIC_PROMPT = re.compile(r"\{((e|E)\$\$)?(([\d\-]+)\$\$)?(([^\|\}]+?)\$\$)?(.+?((\|).+?)*?)\}")
+
+
+def handle_dynamic_prompt_variants(prompt, repeat_count):
+    founds = list(RE_DYNAMIC_PROMPT.finditer(prompt))
+    if not founds:
+        return [prompt]
+
+    # make each replacement for each variant
+    enumerating = False
+    replacers = []
+    for found in founds:
+        # if "e$$" is found, enumerate all variants
+        found_enumerating = found.group(2) is not None
+        enumerating = enumerating or found_enumerating
+
+        separator = ", " if found.group(6) is None else found.group(6)
+        variants = found.group(7).split("|")
+
+        # parse count range
+        count_range = found.group(4)
+        if count_range is None:
+            count_range = [1, 1]
+        else:
+            count_range = count_range.split("-")
+            if len(count_range) == 1:
+                count_range = [int(count_range[0]), int(count_range[0])]
+            elif len(count_range) == 2:
+                count_range = [int(count_range[0]), int(count_range[1])]
+            else:
+                print(f"invalid count range: {count_range}")
+                count_range = [1, 1]
+            if count_range[0] > count_range[1]:
+                count_range = [count_range[1], count_range[0]]
+            if count_range[0] < 0:
+                count_range[0] = 0
+            if count_range[1] > len(variants):
+                count_range[1] = len(variants)
+
+        if found_enumerating:
+            # make function to enumerate all combinations
+            def make_replacer_enum(vari, cr, sep):
+                def replacer():
+                    values = []
+                    for count in range(cr[0], cr[1] + 1):
+                        for comb in itertools.combinations(vari, count):
+                            values.append(sep.join(comb))
+                    return values
+
+                return replacer
+
+            replacers.append(make_replacer_enum(variants, count_range, separator))
+        else:
+            # make function to choose random combinations
+            def make_replacer_single(vari, cr, sep):
+                def replacer():
+                    count = random.randint(cr[0], cr[1])
+                    comb = random.sample(vari, count)
+                    return [sep.join(comb)]
+
+                return replacer
+
+            replacers.append(make_replacer_single(variants, count_range, separator))
+
+    # make each prompt
+    if not enumerating:
+        # if not enumerating, repeat the prompt, replace each variant randomly
+        prompts = []
+        for _ in range(repeat_count):
+            current = prompt
+            for found, replacer in zip(founds, replacers):
+                current = current.replace(found.group(0), replacer()[0], 1)
+            prompts.append(current)
+    else:
+        # if enumerating, iterate all combinations for previous prompts
+        prompts = [prompt]
+
+        for found, replacer in zip(founds, replacers):
+            if found.group(2) is not None:
+                # make all combinations for existing prompts
+                new_prompts = []
+                for current in prompts:
+                    replecements = replacer()
+                    for replecement in replecements:
+                        new_prompts.append(current.replace(found.group(0), replecement, 1))
+                prompts = new_prompts
+
+        for found, replacer in zip(founds, replacers):
+            # make random selection for existing prompts
+            if found.group(2) is None:
+                for i in range(len(prompts)):
+                    prompts[i] = prompts[i].replace(found.group(0), replacer()[0], 1)
+
+    return prompts
+
+
 # endregion
 
 
@@ -2091,7 +2316,7 @@ def main(args):
         dtype = torch.float32
 
     highres_fix = args.highres_fix_scale is not None
-    assert not highres_fix or args.image_path is None, f"highres_fix doesn't work with img2img / highres_fixはimg2imgと同時に使えません"
+    # assert not highres_fix or args.image_path is None, f"highres_fix doesn't work with img2img / highres_fixはimg2imgと同時に使えません"
 
     if args.v_parameterization and not args.v2:
         print("v_parameterization should be with v2 / v1でv_parameterizationを使用することは想定されていません")
@@ -2142,6 +2367,7 @@ def main(args):
     # xformers、Hypernetwork対応
     if not args.diffusers_xformers:
         replace_unet_modules(unet, not args.xformers, args.xformers)
+        replace_vae_modules(vae, not args.xformers, args.xformers)
 
     # tokenizerを読み込む
     print("loading tokenizer")
@@ -2250,7 +2476,27 @@ def main(args):
     device = torch.device("cuda" if torch.cuda.is_available() else "cpu")  # "mps"を考量してない
 
     # custom pipelineをコピったやつを生成する
+    if args.vae_slices:
+        from library.slicing_vae import SlicingAutoencoderKL
+
+        sli_vae = SlicingAutoencoderKL(
+            act_fn="silu",
+            block_out_channels=(128, 256, 512, 512),
+            down_block_types=["DownEncoderBlock2D", "DownEncoderBlock2D", "DownEncoderBlock2D", "DownEncoderBlock2D"],
+            in_channels=3,
+            latent_channels=4,
+            layers_per_block=2,
+            norm_num_groups=32,
+            out_channels=3,
+            sample_size=512,
+            up_block_types=["UpDecoderBlock2D", "UpDecoderBlock2D", "UpDecoderBlock2D", "UpDecoderBlock2D"],
+            num_slices=args.vae_slices,
+        )
+        sli_vae.load_state_dict(vae.state_dict())  # vaeのパラメータをコピーする
+        vae = sli_vae
+        del sli_vae
     vae.to(dtype).to(device)
+
     text_encoder.to(dtype).to(device)
     unet.to(dtype).to(device)
     if clip_model is not None:
@@ -2262,6 +2508,8 @@ def main(args):
     if args.network_module:
         networks = []
         network_default_muls = []
+        network_pre_calc = args.network_pre_calc
+
         for i, network_module in enumerate(args.network_module):
             print("import network module:", network_module)
             imported_module = importlib.import_module(network_module)
@@ -2298,11 +2546,11 @@ def main(args):
             if network is None:
                 return
 
-            mergiable = hasattr(network, "merge_to")
-            if args.network_merge and not mergiable:
+            mergeable = network.is_mergeable()
+            if args.network_merge and not mergeable:
                 print("network is not mergiable. ignore merge option.")
 
-            if not args.network_merge or not mergiable:
+            if not args.network_merge or not mergeable:
                 network.apply_to(text_encoder, unet)
                 info = network.load_state_dict(weights_sd, False)  # network.load_weightsを使うようにするとよい
                 print(f"weights are loaded: {info}")
@@ -2311,6 +2559,10 @@ def main(args):
                     network.to(memory_format=torch.channels_last)
                 network.to(dtype).to(device)
 
+                if network_pre_calc:
+                    print("backup original weights")
+                    network.backup_weights()
+
                 networks.append(network)
             else:
                 network.merge_to(text_encoder, unet, weights_sd, dtype, device)
@@ -2586,12 +2838,18 @@ def main(args):
 
     # 画像サイズにオプション指定があるときはリサイズする
     if args.W is not None and args.H is not None:
+        # highres fix を考慮に入れる
+        w, h = args.W, args.H
+        if highres_fix:
+            w = int(w * args.highres_fix_scale + 0.5)
+            h = int(h * args.highres_fix_scale + 0.5)
+
         if init_images is not None:
-            print(f"resize img2img source images to {args.W}*{args.H}")
-            init_images = resize_images(init_images, (args.W, args.H))
+            print(f"resize img2img source images to {w}*{h}")
+            init_images = resize_images(init_images, (w, h))
         if mask_images is not None:
-            print(f"resize img2img mask images to {args.W}*{args.H}")
-            mask_images = resize_images(mask_images, (args.W, args.H))
+            print(f"resize img2img mask images to {w}*{h}")
+            mask_images = resize_images(mask_images, (w, h))
 
     regional_network = False
     if networks and mask_images:
@@ -2627,6 +2885,7 @@ def main(args):
 
     # seed指定時はseedを決めておく
     if args.seed is not None:
+        # dynamic promptを使うと足りなくなる→images_per_promptを適当に大きくしておいてもらう
         random.seed(args.seed)
         predefined_seeds = [random.randint(0, 0x7FFFFFFF) for _ in range(args.n_iter * len(prompt_list) * args.images_per_prompt)]
         if len(predefined_seeds) == 1:
@@ -2665,17 +2924,21 @@ def main(args):
                     width_1st = width_1st - width_1st % 32
                     height_1st = height_1st - height_1st % 32
 
+                    strength_1st = ext.strength if args.highres_fix_strength is None else args.highres_fix_strength
+
                     ext_1st = BatchDataExt(
                         width_1st,
                         height_1st,
                         args.highres_fix_steps,
                         ext.scale,
                         ext.negative_scale,
-                        ext.strength,
+                        strength_1st,
                         ext.network_muls,
                         ext.num_sub_prompts,
                     )
                     batch_1st.append(BatchData(is_1st_latent, base, ext_1st))
+
+                pipe.set_enable_control_net(True)  # 1st stageではControlNetを有効にする
                 images_1st = process_batch(batch_1st, True, True)
 
                 # 2nd stageのバッチを作成して以下処理する
@@ -2719,6 +2982,9 @@ def main(args):
                     batch_2nd.append(bd_2nd)
                 batch = batch_2nd
 
+                if args.highres_fix_disable_control_net:
+                    pipe.set_enable_control_net(False)  # オプション指定時、2nd stageではControlNetを無効にする
+
             # このバッチの情報を取り出す
             (
                 return_latents,
@@ -2815,12 +3081,20 @@ def main(args):
 
             # generate
             if networks:
+                # 追加ネットワークの処理
                 shared = {}
                 for n, m in zip(networks, network_muls if network_muls else network_default_muls):
                     n.set_multiplier(m)
                     if regional_network:
                         n.set_current_generation(batch_size, num_sub_prompts, width, height, shared)
 
+                if not regional_network and network_pre_calc:
+                    for n in networks:
+                        n.restore_weights()
+                    for n in networks:
+                        n.pre_calculation()
+                    print("pre-calculation... done")
+
             images = pipe(
                 prompts,
                 negative_prompts,
@@ -2899,133 +3173,152 @@ def main(args):
                 while not valid:
                     print("\nType prompt:")
                     try:
-                        prompt = input()
+                        raw_prompt = input()
                     except EOFError:
                         break
 
-                    valid = len(prompt.strip().split(" --")[0].strip()) > 0
+                    valid = len(raw_prompt.strip().split(" --")[0].strip()) > 0
                 if not valid:  # EOF, end app
                     break
             else:
-                prompt = prompt_list[prompt_index]
+                raw_prompt = prompt_list[prompt_index]
 
-            # parse prompt
-            width = args.W
-            height = args.H
-            scale = args.scale
-            negative_scale = args.negative_scale
-            steps = args.steps
-            seeds = None
-            strength = 0.8 if args.strength is None else args.strength
-            negative_prompt = ""
-            clip_prompt = None
-            network_muls = None
+            # sd-dynamic-prompts like variants:
+            # count is 1 (not dynamic) or images_per_prompt (no enumeration) or arbitrary (enumeration)
+            raw_prompts = handle_dynamic_prompt_variants(raw_prompt, args.images_per_prompt)
 
-            prompt_args = prompt.strip().split(" --")
-            prompt = prompt_args[0]
-            print(f"prompt {prompt_index+1}/{len(prompt_list)}: {prompt}")
+            # repeat prompt
+            for pi in range(args.images_per_prompt if len(raw_prompts) == 1 else len(raw_prompts)):
+                raw_prompt = raw_prompts[pi] if len(raw_prompts) > 1 else raw_prompts[0]
 
-            for parg in prompt_args[1:]:
-                try:
-                    m = re.match(r"w (\d+)", parg, re.IGNORECASE)
-                    if m:
-                        width = int(m.group(1))
-                        print(f"width: {width}")
-                        continue
+                if pi == 0 or len(raw_prompts) > 1:
+                    # parse prompt: if prompt is not changed, skip parsing
+                    width = args.W
+                    height = args.H
+                    scale = args.scale
+                    negative_scale = args.negative_scale
+                    steps = args.steps
+                    seed = None
+                    seeds = None
+                    strength = 0.8 if args.strength is None else args.strength
+                    negative_prompt = ""
+                    clip_prompt = None
+                    network_muls = None
 
-                    m = re.match(r"h (\d+)", parg, re.IGNORECASE)
-                    if m:
-                        height = int(m.group(1))
-                        print(f"height: {height}")
-                        continue
+                    prompt_args = raw_prompt.strip().split(" --")
+                    prompt = prompt_args[0]
+                    print(f"prompt {prompt_index+1}/{len(prompt_list)}: {prompt}")
 
-                    m = re.match(r"s (\d+)", parg, re.IGNORECASE)
-                    if m:  # steps
-                        steps = max(1, min(1000, int(m.group(1))))
-                        print(f"steps: {steps}")
-                        continue
+                    for parg in prompt_args[1:]:
+                        try:
+                            m = re.match(r"w (\d+)", parg, re.IGNORECASE)
+                            if m:
+                                width = int(m.group(1))
+                                print(f"width: {width}")
+                                continue
 
-                    m = re.match(r"d ([\d,]+)", parg, re.IGNORECASE)
-                    if m:  # seed
-                        seeds = [int(d) for d in m.group(1).split(",")]
-                        print(f"seeds: {seeds}")
-                        continue
+                            m = re.match(r"h (\d+)", parg, re.IGNORECASE)
+                            if m:
+                                height = int(m.group(1))
+                                print(f"height: {height}")
+                                continue
 
-                    m = re.match(r"l ([\d\.]+)", parg, re.IGNORECASE)
-                    if m:  # scale
-                        scale = float(m.group(1))
-                        print(f"scale: {scale}")
-                        continue
+                            m = re.match(r"s (\d+)", parg, re.IGNORECASE)
+                            if m:  # steps
+                                steps = max(1, min(1000, int(m.group(1))))
+                                print(f"steps: {steps}")
+                                continue
 
-                    m = re.match(r"nl ([\d\.]+|none|None)", parg, re.IGNORECASE)
-                    if m:  # negative scale
-                        if m.group(1).lower() == "none":
-                            negative_scale = None
-                        else:
-                            negative_scale = float(m.group(1))
-                        print(f"negative scale: {negative_scale}")
-                        continue
+                            m = re.match(r"d ([\d,]+)", parg, re.IGNORECASE)
+                            if m:  # seed
+                                seeds = [int(d) for d in m.group(1).split(",")]
+                                print(f"seeds: {seeds}")
+                                continue
 
-                    m = re.match(r"t ([\d\.]+)", parg, re.IGNORECASE)
-                    if m:  # strength
-                        strength = float(m.group(1))
-                        print(f"strength: {strength}")
-                        continue
+                            m = re.match(r"l ([\d\.]+)", parg, re.IGNORECASE)
+                            if m:  # scale
+                                scale = float(m.group(1))
+                                print(f"scale: {scale}")
+                                continue
 
-                    m = re.match(r"n (.+)", parg, re.IGNORECASE)
-                    if m:  # negative prompt
-                        negative_prompt = m.group(1)
-                        print(f"negative prompt: {negative_prompt}")
-                        continue
+                            m = re.match(r"nl ([\d\.]+|none|None)", parg, re.IGNORECASE)
+                            if m:  # negative scale
+                                if m.group(1).lower() == "none":
+                                    negative_scale = None
+                                else:
+                                    negative_scale = float(m.group(1))
+                                print(f"negative scale: {negative_scale}")
+                                continue
 
-                    m = re.match(r"c (.+)", parg, re.IGNORECASE)
-                    if m:  # clip prompt
-                        clip_prompt = m.group(1)
-                        print(f"clip prompt: {clip_prompt}")
-                        continue
+                            m = re.match(r"t ([\d\.]+)", parg, re.IGNORECASE)
+                            if m:  # strength
+                                strength = float(m.group(1))
+                                print(f"strength: {strength}")
+                                continue
 
-                    m = re.match(r"am ([\d\.\-,]+)", parg, re.IGNORECASE)
-                    if m:  # network multiplies
-                        network_muls = [float(v) for v in m.group(1).split(",")]
-                        while len(network_muls) < len(networks):
-                            network_muls.append(network_muls[-1])
-                        print(f"network mul: {network_muls}")
-                        continue
+                            m = re.match(r"n (.+)", parg, re.IGNORECASE)
+                            if m:  # negative prompt
+                                negative_prompt = m.group(1)
+                                print(f"negative prompt: {negative_prompt}")
+                                continue
 
-                except ValueError as ex:
-                    print(f"Exception in parsing / 解析エラー: {parg}")
-                    print(ex)
+                            m = re.match(r"c (.+)", parg, re.IGNORECASE)
+                            if m:  # clip prompt
+                                clip_prompt = m.group(1)
+                                print(f"clip prompt: {clip_prompt}")
+                                continue
 
-            if seeds is not None:
-                # 数が足りないなら繰り返す
-                if len(seeds) < args.images_per_prompt:
-                    seeds = seeds * int(math.ceil(args.images_per_prompt / len(seeds)))
-                seeds = seeds[: args.images_per_prompt]
-            else:
-                if predefined_seeds is not None:
-                    seeds = predefined_seeds[-args.images_per_prompt :]
-                    predefined_seeds = predefined_seeds[: -args.images_per_prompt]
-                elif args.iter_same_seed:
-                    seeds = [iter_seed] * args.images_per_prompt
+                            m = re.match(r"am ([\d\.\-,]+)", parg, re.IGNORECASE)
+                            if m:  # network multiplies
+                                network_muls = [float(v) for v in m.group(1).split(",")]
+                                while len(network_muls) < len(networks):
+                                    network_muls.append(network_muls[-1])
+                                print(f"network mul: {network_muls}")
+                                continue
+
+                        except ValueError as ex:
+                            print(f"Exception in parsing / 解析エラー: {parg}")
+                            print(ex)
+
+                # prepare seed
+                if seeds is not None:  # given in prompt
+                    # 数が足りないなら前のをそのまま使う
+                    if len(seeds) > 0:
+                        seed = seeds.pop(0)
                 else:
-                    seeds = [random.randint(0, 0x7FFFFFFF) for _ in range(args.images_per_prompt)]
-                if args.interactive:
-                    print(f"seed: {seeds}")
+                    if predefined_seeds is not None:
+                        if len(predefined_seeds) > 0:
+                            seed = predefined_seeds.pop(0)
+                        else:
+                            print("predefined seeds are exhausted")
+                            seed = None
+                    elif args.iter_same_seed:
+                        seeds = iter_seed
+                    else:
+                        seed = None  # 前のを消す
+
+                if seed is None:
+                    seed = random.randint(0, 0x7FFFFFFF)
+                if args.interactive:
+                    print(f"seed: {seed}")
+
+                # prepare init image, guide image and mask
+                init_image = mask_image = guide_image = None
 
-            init_image = mask_image = guide_image = None
-            for seed in seeds:  # images_per_promptの数だけ
                 # 同一イメージを使うとき、本当はlatentに変換しておくと無駄がないが面倒なのでとりあえず毎回処理する
                 if init_images is not None:
                     init_image = init_images[global_step % len(init_images)]
 
+                    # img2imgの場合は、基本的に元画像のサイズで生成する。highres fixの場合はargs.W, args.Hとscaleに従いリサイズ済みなので無視する
                     # 32単位に丸めたやつにresizeされるので踏襲する
-                    width, height = init_image.size
-                    width = width - width % 32
-                    height = height - height % 32
-                    if width != init_image.size[0] or height != init_image.size[1]:
-                        print(
-                            f"img2img image size is not divisible by 32 so aspect ratio is changed / img2imgの画像サイズが32で割り切れないためリサイズされます。画像が歪みます"
-                        )
+                    if not highres_fix:
+                        width, height = init_image.size
+                        width = width - width % 32
+                        height = height - height % 32
+                        if width != init_image.size[0] or height != init_image.size[1]:
+                            print(
+                                f"img2img image size is not divisible by 32 so aspect ratio is changed / img2imgの画像サイズが32で割り切れないためリサイズされます。画像が歪みます"
+                            )
 
                 if mask_images is not None:
                     mask_image = mask_images[global_step % len(mask_images)]
@@ -3127,6 +3420,12 @@ def setup_parser() -> argparse.ArgumentParser:
         default=None,
         help="batch size for VAE, < 1.0 for ratio / VAE処理時のバッチサイズ、1未満の値の場合は通常バッチサイズの比率",
     )
+    parser.add_argument(
+        "--vae_slices",
+        type=int,
+        default=None,
+        help="number of slices to split image into for VAE to reduce VRAM usage, None for no splitting (default), slower if specified. 16 or 32 recommended / VAE処理時にVRAM使用量削減のため画像を分割するスライス数、Noneの場合は分割しない（デフォルト）、指定すると遅くなる。16か32程度を推奨",
+    )
     parser.add_argument("--steps", type=int, default=50, help="number of ddim sampling steps / サンプリングステップ数")
     parser.add_argument(
         "--sampler",
@@ -3204,6 +3503,9 @@ def setup_parser() -> argparse.ArgumentParser:
     )
     parser.add_argument("--network_show_meta", action="store_true", help="show metadata of network model / ネットワークモデルのメタデータを表示する")
     parser.add_argument("--network_merge", action="store_true", help="merge network weights to original model / ネットワークの重みをマージする")
+    parser.add_argument(
+        "--network_pre_calc", action="store_true", help="pre-calculate network for generation / ネットワークのあらかじめ計算して生成する"
+    )
     parser.add_argument(
         "--textual_inversion_embeddings",
         type=str,
@@ -3261,6 +3563,12 @@ def setup_parser() -> argparse.ArgumentParser:
     parser.add_argument(
         "--highres_fix_steps", type=int, default=28, help="1st stage steps for highres fix / highres fixの最初のステージのステップ数"
     )
+    parser.add_argument(
+        "--highres_fix_strength",
+        type=float,
+        default=None,
+        help="1st stage img2img strength for highres fix / highres fixの最初のステージのimg2img時のstrength、省略時はstrengthと同じ",
+    )
     parser.add_argument(
         "--highres_fix_save_1st", action="store_true", help="save 1st stage images for highres fix / highres fixの最初のステージの画像を保存する"
     )
@@ -3278,6 +3586,11 @@ def setup_parser() -> argparse.ArgumentParser:
         default=None,
         help="additional argmuments for upscaler (key=value) / upscalerへの追加の引数",
     )
+    parser.add_argument(
+        "--highres_fix_disable_control_net",
+        action="store_true",
+        help="disable ControlNet for highres fix / highres fixでControlNetを使わない",
+    )
 
     parser.add_argument(
         "--negative_scale", type=float, default=None, help="set another guidance scale for negative prompt / ネガティブプロンプトのscaleを指定する"

library/custom_train_functions.py

@@ -1,23 +1,44 @@
 import torch
 import argparse
+import random
 import re
 from typing import List, Optional, Union
 
 
-def apply_snr_weight(loss, timesteps, noise_scheduler, gamma):
+def prepare_scheduler_for_custom_training(noise_scheduler, device):
+    if hasattr(noise_scheduler, "all_snr"):
+        return
+
     alphas_cumprod = noise_scheduler.alphas_cumprod
     sqrt_alphas_cumprod = torch.sqrt(alphas_cumprod)
     sqrt_one_minus_alphas_cumprod = torch.sqrt(1.0 - alphas_cumprod)
     alpha = sqrt_alphas_cumprod
     sigma = sqrt_one_minus_alphas_cumprod
     all_snr = (alpha / sigma) ** 2
-    snr = torch.stack([all_snr[t] for t in timesteps])
+
+    noise_scheduler.all_snr = all_snr.to(device)
+
+
+def apply_snr_weight(loss, timesteps, noise_scheduler, gamma):
+    snr = torch.stack([noise_scheduler.all_snr[t] for t in timesteps])
     gamma_over_snr = torch.div(torch.ones_like(snr) * gamma, snr)
     snr_weight = torch.minimum(gamma_over_snr, torch.ones_like(gamma_over_snr)).float()  # from paper
     loss = loss * snr_weight
     return loss
 
 
+def scale_v_prediction_loss_like_noise_prediction(loss, timesteps, noise_scheduler):
+    snr_t = torch.stack([noise_scheduler.all_snr[t] for t in timesteps])  # batch_size
+    snr_t = torch.minimum(snr_t, torch.ones_like(snr_t) * 1000)  # if timestep is 0, snr_t is inf, so limit it to 1000
+    scale = snr_t / (snr_t + 1)
+
+    loss = loss * scale
+    return loss
+
+
+# TODO train_utilと分散しているのでどちらかに寄せる
+
+
 def add_custom_train_arguments(parser: argparse.ArgumentParser, support_weighted_captions: bool = True):
     parser.add_argument(
         "--min_snr_gamma",
@@ -25,6 +46,11 @@ def add_custom_train_arguments(parser: argparse.ArgumentParser, support_weighted
         default=None,
         help="gamma for reducing the weight of high loss timesteps. Lower numbers have stronger effect. 5 is recommended by paper. / 低いタイムステップでの高いlossに対して重みを減らすためのgamma値、低いほど効果が強く、論文では5が推奨",
     )
+    parser.add_argument(
+        "--scale_v_pred_loss_like_noise_pred",
+        action="store_true",
+        help="scale v-prediction loss like noise prediction loss / v-prediction lossをnoise prediction lossと同じようにスケーリングする",
+    )
     if support_weighted_captions:
         parser.add_argument(
             "--weighted_captions",
@@ -239,11 +265,6 @@ def get_unweighted_text_embeddings(
                 text_embedding = enc_out["hidden_states"][-clip_skip]
                 text_embedding = text_encoder.text_model.final_layer_norm(text_embedding)
 
-            # cover the head and the tail by the starting and the ending tokens
-            text_input_chunk[:, 0] = text_input[0, 0]
-            text_input_chunk[:, -1] = text_input[0, -1]
-            text_embedding = text_encoder(text_input_chunk, attention_mask=None)[0]
-
             if no_boseos_middle:
                 if i == 0:
                     # discard the ending token
@@ -258,7 +279,12 @@ def get_unweighted_text_embeddings(
             text_embeddings.append(text_embedding)
         text_embeddings = torch.concat(text_embeddings, axis=1)
     else:
-        text_embeddings = text_encoder(text_input)[0]
+        if clip_skip is None or clip_skip == 1:
+            text_embeddings = text_encoder(text_input)[0]
+        else:
+            enc_out = text_encoder(text_input, output_hidden_states=True, return_dict=True)
+            text_embeddings = enc_out["hidden_states"][-clip_skip]
+            text_embeddings = text_encoder.text_model.final_layer_norm(text_embeddings)
     return text_embeddings
 
 
@@ -342,3 +368,91 @@ def get_weighted_text_embeddings(
     text_embeddings = text_embeddings * (previous_mean / current_mean).unsqueeze(-1).unsqueeze(-1)
 
     return text_embeddings
+
+
+# https://wandb.ai/johnowhitaker/multires_noise/reports/Multi-Resolution-Noise-for-Diffusion-Model-Training--VmlldzozNjYyOTU2
+def pyramid_noise_like(noise, device, iterations=6, discount=0.4):
+    b, c, w, h = noise.shape  # EDIT: w and h get over-written, rename for a different variant!
+    u = torch.nn.Upsample(size=(w, h), mode="bilinear").to(device)
+    for i in range(iterations):
+        r = random.random() * 2 + 2  # Rather than always going 2x,
+        wn, hn = max(1, int(w / (r**i))), max(1, int(h / (r**i)))
+        noise += u(torch.randn(b, c, wn, hn).to(device)) * discount**i
+        if wn == 1 or hn == 1:
+            break  # Lowest resolution is 1x1
+    return noise / noise.std()  # Scaled back to roughly unit variance
+
+
+# https://www.crosslabs.org//blog/diffusion-with-offset-noise
+def apply_noise_offset(latents, noise, noise_offset, adaptive_noise_scale):
+    if noise_offset is None:
+        return noise
+    if adaptive_noise_scale is not None:
+        # latent shape: (batch_size, channels, height, width)
+        # abs mean value for each channel
+        latent_mean = torch.abs(latents.mean(dim=(2, 3), keepdim=True))
+
+        # multiply adaptive noise scale to the mean value and add it to the noise offset
+        noise_offset = noise_offset + adaptive_noise_scale * latent_mean
+        noise_offset = torch.clamp(noise_offset, 0.0, None)  # in case of adaptive noise scale is negative
+
+    noise = noise + noise_offset * torch.randn((latents.shape[0], latents.shape[1], 1, 1), device=latents.device)
+    return noise
+
+
+"""
+##########################################
+# Perlin Noise
+def rand_perlin_2d(device, shape, res, fade=lambda t: 6 * t**5 - 15 * t**4 + 10 * t**3):
+    delta = (res[0] / shape[0], res[1] / shape[1])
+    d = (shape[0] // res[0], shape[1] // res[1])
+
+    grid = (
+        torch.stack(
+            torch.meshgrid(torch.arange(0, res[0], delta[0], device=device), torch.arange(0, res[1], delta[1], device=device)),
+            dim=-1,
+        )
+        % 1
+    )
+    angles = 2 * torch.pi * torch.rand(res[0] + 1, res[1] + 1, device=device)
+    gradients = torch.stack((torch.cos(angles), torch.sin(angles)), dim=-1)
+
+    tile_grads = (
+        lambda slice1, slice2: gradients[slice1[0] : slice1[1], slice2[0] : slice2[1]]
+        .repeat_interleave(d[0], 0)
+        .repeat_interleave(d[1], 1)
+    )
+    dot = lambda grad, shift: (
+        torch.stack((grid[: shape[0], : shape[1], 0] + shift[0], grid[: shape[0], : shape[1], 1] + shift[1]), dim=-1)
+        * grad[: shape[0], : shape[1]]
+    ).sum(dim=-1)
+
+    n00 = dot(tile_grads([0, -1], [0, -1]), [0, 0])
+    n10 = dot(tile_grads([1, None], [0, -1]), [-1, 0])
+    n01 = dot(tile_grads([0, -1], [1, None]), [0, -1])
+    n11 = dot(tile_grads([1, None], [1, None]), [-1, -1])
+    t = fade(grid[: shape[0], : shape[1]])
+    return 1.414 * torch.lerp(torch.lerp(n00, n10, t[..., 0]), torch.lerp(n01, n11, t[..., 0]), t[..., 1])
+
+
+def rand_perlin_2d_octaves(device, shape, res, octaves=1, persistence=0.5):
+    noise = torch.zeros(shape, device=device)
+    frequency = 1
+    amplitude = 1
+    for _ in range(octaves):
+        noise += amplitude * rand_perlin_2d(device, shape, (frequency * res[0], frequency * res[1]))
+        frequency *= 2
+        amplitude *= persistence
+    return noise
+
+
+def perlin_noise(noise, device, octaves):
+    _, c, w, h = noise.shape
+    perlin = lambda: rand_perlin_2d_octaves(device, (w, h), (4, 4), octaves)
+    noise_perlin = []
+    for _ in range(c):
+        noise_perlin.append(perlin())
+    noise_perlin = torch.stack(noise_perlin).unsqueeze(0)   # (1, c, w, h)
+    noise += noise_perlin # broadcast for each batch
+    return noise / noise.std()  # Scaled back to roughly unit variance
+"""

library/huggingface_util.py

@@ -1,15 +1,12 @@
-from typing import *
+from typing import Union, BinaryIO
 from huggingface_hub import HfApi
 from pathlib import Path
 import argparse
 import os
-
 from library.utils import fire_in_thread
 
 
-def exists_repo(
-    repo_id: str, repo_type: str, revision: str = "main", token: str = None
-):
+def exists_repo(repo_id: str, repo_type: str, revision: str = "main", token: str = None):
     api = HfApi(
         token=token,
     )
@@ -33,27 +30,35 @@ def upload(
     private = args.huggingface_repo_visibility is None or args.huggingface_repo_visibility != "public"
     api = HfApi(token=token)
     if not exists_repo(repo_id=repo_id, repo_type=repo_type, token=token):
-        api.create_repo(repo_id=repo_id, repo_type=repo_type, private=private)
+        try:
+            api.create_repo(repo_id=repo_id, repo_type=repo_type, private=private)
+        except Exception as e:  # とりあえずRepositoryNotFoundErrorは確認したが他にあると困るので
+            print("===========================================")
+            print(f"failed to create HuggingFace repo / HuggingFaceのリポジトリの作成に失敗しました : {e}")
+            print("===========================================")
 
-    is_folder = (type(src) == str and os.path.isdir(src)) or (
-        isinstance(src, Path) and src.is_dir()
-    )
+    is_folder = (type(src) == str and os.path.isdir(src)) or (isinstance(src, Path) and src.is_dir())
 
     def uploader():
-        if is_folder:
-            api.upload_folder(
-                repo_id=repo_id,
-                repo_type=repo_type,
-                folder_path=src,
-                path_in_repo=path_in_repo,
-            )
-        else:
-            api.upload_file(
-                repo_id=repo_id,
-                repo_type=repo_type,
-                path_or_fileobj=src,
-                path_in_repo=path_in_repo,
-            )
+        try:
+            if is_folder:
+                api.upload_folder(
+                    repo_id=repo_id,
+                    repo_type=repo_type,
+                    folder_path=src,
+                    path_in_repo=path_in_repo,
+                )
+            else:
+                api.upload_file(
+                    repo_id=repo_id,
+                    repo_type=repo_type,
+                    path_or_fileobj=src,
+                    path_in_repo=path_in_repo,
+                )
+        except Exception as e:  # RuntimeErrorを確認済みだが他にあると困るので
+            print("===========================================")
+            print(f"failed to upload to HuggingFace / HuggingFaceへのアップロードに失敗しました : {e}")
+            print("===========================================")
 
     if args.async_upload and not force_sync_upload:
         fire_in_thread(uploader)
@@ -72,7 +77,5 @@ def list_dir(
         token=token,
     )
     repo_info = api.repo_info(repo_id=repo_id, revision=revision, repo_type=repo_type)
-    file_list = [
-        file for file in repo_info.siblings if file.rfilename.startswith(subfolder)
-    ]
+    file_list = [file for file in repo_info.siblings if file.rfilename.startswith(subfolder)]
     return file_list

library/lpw_stable_diffusion.py

@@ -245,11 +245,6 @@ def get_unweighted_text_embeddings(
                 text_embedding = enc_out["hidden_states"][-clip_skip]
                 text_embedding = pipe.text_encoder.text_model.final_layer_norm(text_embedding)
 
-            # cover the head and the tail by the starting and the ending tokens
-            text_input_chunk[:, 0] = text_input[0, 0]
-            text_input_chunk[:, -1] = text_input[0, -1]
-            text_embedding = pipe.text_encoder(text_input_chunk, attention_mask=None)[0]
-
             if no_boseos_middle:
                 if i == 0:
                     # discard the ending token
@@ -264,7 +259,12 @@ def get_unweighted_text_embeddings(
             text_embeddings.append(text_embedding)
         text_embeddings = torch.concat(text_embeddings, axis=1)
     else:
-        text_embeddings = pipe.text_encoder(text_input)[0]
+        if clip_skip is None or clip_skip == 1:
+            text_embeddings = pipe.text_encoder(text_input)[0]
+        else:
+            enc_out = pipe.text_encoder(text_input, output_hidden_states=True, return_dict=True)
+            text_embeddings = enc_out["hidden_states"][-clip_skip]
+            text_embeddings = pipe.text_encoder.text_model.final_layer_norm(text_embeddings)
     return text_embeddings
 
 

library/model_util.py

@@ -22,6 +22,7 @@ UNET_PARAMS_OUT_CHANNELS = 4
 UNET_PARAMS_NUM_RES_BLOCKS = 2
 UNET_PARAMS_CONTEXT_DIM = 768
 UNET_PARAMS_NUM_HEADS = 8
+# UNET_PARAMS_USE_LINEAR_PROJECTION = False
 
 VAE_PARAMS_Z_CHANNELS = 4
 VAE_PARAMS_RESOLUTION = 256
@@ -34,6 +35,7 @@ VAE_PARAMS_NUM_RES_BLOCKS = 2
 # V2
 V2_UNET_PARAMS_ATTENTION_HEAD_DIM = [5, 10, 20, 20]
 V2_UNET_PARAMS_CONTEXT_DIM = 1024
+# V2_UNET_PARAMS_USE_LINEAR_PROJECTION = True
 
 # Diffusersの設定を読み込むための参照モデル
 DIFFUSERS_REF_MODEL_ID_V1 = "runwayml/stable-diffusion-v1-5"
@@ -357,8 +359,9 @@ def convert_ldm_unet_checkpoint(v2, checkpoint, config):
 
                 new_checkpoint[new_path] = unet_state_dict[old_path]
 
-    # SDのv2では1*1のconv2dがlinearに変わっているので、linear->convに変換する
-    if v2:
+    # SDのv2では1*1のconv2dがlinearに変わっている
+    # 誤って Diffusers 側を conv2d のままにしてしまったので、変換必要
+    if v2 and not config.get('use_linear_projection', False):
         linear_transformer_to_conv(new_checkpoint)
 
     return new_checkpoint
@@ -468,7 +471,7 @@ def convert_ldm_vae_checkpoint(checkpoint, config):
     return new_checkpoint
 
 
-def create_unet_diffusers_config(v2):
+def create_unet_diffusers_config(v2, use_linear_projection_in_v2=False):
     """
     Creates a config for the diffusers based on the config of the LDM model.
     """
@@ -500,7 +503,10 @@ def create_unet_diffusers_config(v2):
         layers_per_block=UNET_PARAMS_NUM_RES_BLOCKS,
         cross_attention_dim=UNET_PARAMS_CONTEXT_DIM if not v2 else V2_UNET_PARAMS_CONTEXT_DIM,
         attention_head_dim=UNET_PARAMS_NUM_HEADS if not v2 else V2_UNET_PARAMS_ATTENTION_HEAD_DIM,
+        # use_linear_projection=UNET_PARAMS_USE_LINEAR_PROJECTION if not v2 else V2_UNET_PARAMS_USE_LINEAR_PROJECTION,
     )
+    if v2 and use_linear_projection_in_v2:
+        config["use_linear_projection"] = True
 
     return config
 
@@ -846,11 +852,11 @@ def load_checkpoint_with_text_encoder_conversion(ckpt_path, device="cpu"):
 
 
 # TODO dtype指定の動作が怪しいので確認する text_encoderを指定形式で作れるか未確認
-def load_models_from_stable_diffusion_checkpoint(v2, ckpt_path, device="cpu", dtype=None):
+def load_models_from_stable_diffusion_checkpoint(v2, ckpt_path, device="cpu", dtype=None, unet_use_linear_projection_in_v2=False):
     _, state_dict = load_checkpoint_with_text_encoder_conversion(ckpt_path, device)
 
     # Convert the UNet2DConditionModel model.
-    unet_config = create_unet_diffusers_config(v2)
+    unet_config = create_unet_diffusers_config(v2, unet_use_linear_projection_in_v2)
     converted_unet_checkpoint = convert_ldm_unet_checkpoint(v2, state_dict, unet_config)
 
     unet = UNet2DConditionModel(**unet_config).to(device)

library/slicing_vae.py

@@ -0,0 +1,679 @@
+# Modified from Diffusers to reduce VRAM usage
+
+# Copyright 2022 The HuggingFace Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from dataclasses import dataclass
+from typing import Optional, Tuple, Union
+
+import numpy as np
+import torch
+import torch.nn as nn
+
+
+from diffusers.configuration_utils import ConfigMixin, register_to_config
+from diffusers.modeling_utils import ModelMixin
+from diffusers.utils import BaseOutput
+from diffusers.models.unet_2d_blocks import UNetMidBlock2D, get_down_block, get_up_block, ResnetBlock2D
+from diffusers.models.vae import DecoderOutput, Encoder, AutoencoderKLOutput, DiagonalGaussianDistribution
+
+
+def slice_h(x, num_slices):
+    # slice with pad 1 both sides: to eliminate side effect of padding of conv2d
+    # Conv2dのpaddingの副作用を排除するために、両側にpad 1しながらHをスライスする
+    # NCHWでもNHWCでもどちらでも動く
+    size = (x.shape[2] + num_slices - 1) // num_slices
+    sliced = []
+    for i in range(num_slices):
+        if i == 0:
+            sliced.append(x[:, :, : size + 1, :])
+        else:
+            end = size * (i + 1) + 1
+            if x.shape[2] - end < 3:  # if the last slice is too small, use the rest of the tensor 最後が細すぎるとconv2dできないので全部使う
+                end = x.shape[2]
+            sliced.append(x[:, :, size * i - 1 : end, :])
+            if end >= x.shape[2]:
+                break
+    return sliced
+
+
+def cat_h(sliced):
+    # padding分を除いて結合する
+    cat = []
+    for i, x in enumerate(sliced):
+        if i == 0:
+            cat.append(x[:, :, :-1, :])
+        elif i == len(sliced) - 1:
+            cat.append(x[:, :, 1:, :])
+        else:
+            cat.append(x[:, :, 1:-1, :])
+        del x
+    x = torch.cat(cat, dim=2)
+    return x
+
+
+def resblock_forward(_self, num_slices, input_tensor, temb):
+    assert _self.upsample is None and _self.downsample is None
+    assert _self.norm1.num_groups == _self.norm2.num_groups
+    assert temb is None
+
+    # make sure norms are on cpu
+    org_device = input_tensor.device
+    cpu_device = torch.device("cpu")
+    _self.norm1.to(cpu_device)
+    _self.norm2.to(cpu_device)
+
+    # GroupNormがCPUでfp16で動かない対策
+    org_dtype = input_tensor.dtype
+    if org_dtype == torch.float16:
+        _self.norm1.to(torch.float32)
+        _self.norm2.to(torch.float32)
+
+    # すべてのテンソルをCPUに移動する
+    input_tensor = input_tensor.to(cpu_device)
+    hidden_states = input_tensor
+
+    # どうもこれは結果が異なるようだ……
+    # def sliced_norm1(norm, x):
+    #     num_div = 4 if up_block_idx <= 2 else x.shape[1] // norm.num_groups
+    #     sliced_tensor = torch.chunk(x, num_div, dim=1)
+    #     sliced_weight = torch.chunk(norm.weight, num_div, dim=0)
+    #     sliced_bias = torch.chunk(norm.bias, num_div, dim=0)
+    #     print(sliced_tensor[0].shape, num_div, sliced_weight[0].shape, sliced_bias[0].shape)
+    #     normed_tensor = []
+    #     for i in range(num_div):
+    #         n = torch.group_norm(sliced_tensor[i], norm.num_groups, sliced_weight[i], sliced_bias[i], norm.eps)
+    #         normed_tensor.append(n)
+    #         del n
+    #     x = torch.cat(normed_tensor, dim=1)
+    #     return num_div, x
+
+    # normを分割すると結果が変わるので、ここだけは分割しない。GPUで計算するとVRAMが足りなくなるので、CPUで計算する。幸いCPUでもそこまで遅くない
+    if org_dtype == torch.float16:
+        hidden_states = hidden_states.to(torch.float32)
+    hidden_states = _self.norm1(hidden_states)  # run on cpu
+    if org_dtype == torch.float16:
+        hidden_states = hidden_states.to(torch.float16)
+
+    sliced = slice_h(hidden_states, num_slices)
+    del hidden_states
+
+    for i in range(len(sliced)):
+        x = sliced[i]
+        sliced[i] = None
+
+        # 計算する部分だけGPUに移動する、以下同様
+        x = x.to(org_device)
+        x = _self.nonlinearity(x)
+        x = _self.conv1(x)
+        x = x.to(cpu_device)
+        sliced[i] = x
+        del x
+
+    hidden_states = cat_h(sliced)
+    del sliced
+
+    if org_dtype == torch.float16:
+        hidden_states = hidden_states.to(torch.float32)
+    hidden_states = _self.norm2(hidden_states)  # run on cpu
+    if org_dtype == torch.float16:
+        hidden_states = hidden_states.to(torch.float16)
+
+    sliced = slice_h(hidden_states, num_slices)
+    del hidden_states
+
+    for i in range(len(sliced)):
+        x = sliced[i]
+        sliced[i] = None
+
+        x = x.to(org_device)
+        x = _self.nonlinearity(x)
+        x = _self.dropout(x)
+        x = _self.conv2(x)
+        x = x.to(cpu_device)
+        sliced[i] = x
+        del x
+
+    hidden_states = cat_h(sliced)
+    del sliced
+
+    # make shortcut
+    if _self.conv_shortcut is not None:
+        sliced = list(torch.chunk(input_tensor, num_slices, dim=2))  # no padding in conv_shortcut パディングがないので普通にスライスする
+        del input_tensor
+
+        for i in range(len(sliced)):
+            x = sliced[i]
+            sliced[i] = None
+
+            x = x.to(org_device)
+            x = _self.conv_shortcut(x)
+            x = x.to(cpu_device)
+            sliced[i] = x
+            del x
+
+        input_tensor = torch.cat(sliced, dim=2)
+        del sliced
+
+    output_tensor = (input_tensor + hidden_states) / _self.output_scale_factor
+
+    output_tensor = output_tensor.to(org_device)  # 次のレイヤーがGPUで計算する
+    return output_tensor
+
+
+class SlicingEncoder(nn.Module):
+    def __init__(
+        self,
+        in_channels=3,
+        out_channels=3,
+        down_block_types=("DownEncoderBlock2D",),
+        block_out_channels=(64,),
+        layers_per_block=2,
+        norm_num_groups=32,
+        act_fn="silu",
+        double_z=True,
+        num_slices=2,
+    ):
+        super().__init__()
+        self.layers_per_block = layers_per_block
+
+        self.conv_in = torch.nn.Conv2d(in_channels, block_out_channels[0], kernel_size=3, stride=1, padding=1)
+
+        self.mid_block = None
+        self.down_blocks = nn.ModuleList([])
+
+        # down
+        output_channel = block_out_channels[0]
+        for i, down_block_type in enumerate(down_block_types):
+            input_channel = output_channel
+            output_channel = block_out_channels[i]
+            is_final_block = i == len(block_out_channels) - 1
+
+            down_block = get_down_block(
+                down_block_type,
+                num_layers=self.layers_per_block,
+                in_channels=input_channel,
+                out_channels=output_channel,
+                add_downsample=not is_final_block,
+                resnet_eps=1e-6,
+                downsample_padding=0,
+                resnet_act_fn=act_fn,
+                resnet_groups=norm_num_groups,
+                attn_num_head_channels=None,
+                temb_channels=None,
+            )
+            self.down_blocks.append(down_block)
+
+        # mid
+        self.mid_block = UNetMidBlock2D(
+            in_channels=block_out_channels[-1],
+            resnet_eps=1e-6,
+            resnet_act_fn=act_fn,
+            output_scale_factor=1,
+            resnet_time_scale_shift="default",
+            attn_num_head_channels=None,
+            resnet_groups=norm_num_groups,
+            temb_channels=None,
+        )
+        self.mid_block.attentions[0].set_use_memory_efficient_attention_xformers(True)  # とりあえずDiffusersのxformersを使う
+
+        # out
+        self.conv_norm_out = nn.GroupNorm(num_channels=block_out_channels[-1], num_groups=norm_num_groups, eps=1e-6)
+        self.conv_act = nn.SiLU()
+
+        conv_out_channels = 2 * out_channels if double_z else out_channels
+        self.conv_out = nn.Conv2d(block_out_channels[-1], conv_out_channels, 3, padding=1)
+
+        # replace forward of ResBlocks
+        def wrapper(func, module, num_slices):
+            def forward(*args, **kwargs):
+                return func(module, num_slices, *args, **kwargs)
+
+            return forward
+
+        self.num_slices = num_slices
+        div = num_slices / (2 ** (len(self.down_blocks) - 1))  # 深い層はそこまで分割しなくていいので適宜減らす
+        # print(f"initial divisor: {div}")
+        if div >= 2:
+            div = int(div)
+            for resnet in self.mid_block.resnets:
+                resnet.forward = wrapper(resblock_forward, resnet, div)
+            # midblock doesn't have downsample
+
+        for i, down_block in enumerate(self.down_blocks[::-1]):
+            if div >= 2:
+                div = int(div)
+                # print(f"down block: {i} divisor: {div}")
+                for resnet in down_block.resnets:
+                    resnet.forward = wrapper(resblock_forward, resnet, div)
+                if down_block.downsamplers is not None:
+                    # print("has downsample")
+                    for downsample in down_block.downsamplers:
+                        downsample.forward = wrapper(self.downsample_forward, downsample, div * 2)
+            div *= 2
+
+    def forward(self, x):
+        sample = x
+        del x
+
+        org_device = sample.device
+        cpu_device = torch.device("cpu")
+
+        # sample = self.conv_in(sample)
+        sample = sample.to(cpu_device)
+        sliced = slice_h(sample, self.num_slices)
+        del sample
+
+        for i in range(len(sliced)):
+            x = sliced[i]
+            sliced[i] = None
+
+            x = x.to(org_device)
+            x = self.conv_in(x)
+            x = x.to(cpu_device)
+            sliced[i] = x
+            del x
+
+        sample = cat_h(sliced)
+        del sliced
+
+        sample = sample.to(org_device)
+
+        # down
+        for down_block in self.down_blocks:
+            sample = down_block(sample)
+
+        # middle
+        sample = self.mid_block(sample)
+
+        # post-process
+        # ここも省メモリ化したいが、恐らくそこまでメモリを食わないので省略
+        sample = self.conv_norm_out(sample)
+        sample = self.conv_act(sample)
+        sample = self.conv_out(sample)
+
+        return sample
+
+    def downsample_forward(self, _self, num_slices, hidden_states):
+        assert hidden_states.shape[1] == _self.channels
+        assert _self.use_conv and _self.padding == 0
+        print("downsample forward", num_slices, hidden_states.shape)
+
+        org_device = hidden_states.device
+        cpu_device = torch.device("cpu")
+
+        hidden_states = hidden_states.to(cpu_device)
+        pad = (0, 1, 0, 1)
+        hidden_states = torch.nn.functional.pad(hidden_states, pad, mode="constant", value=0)
+
+        # slice with even number because of stride 2
+        # strideが2なので偶数でスライスする
+        # slice with pad 1 both sides: to eliminate side effect of padding of conv2d
+        size = (hidden_states.shape[2] + num_slices - 1) // num_slices
+        size = size + 1 if size % 2 == 1 else size
+
+        sliced = []
+        for i in range(num_slices):
+            if i == 0:
+                sliced.append(hidden_states[:, :, : size + 1, :])
+            else:
+                end = size * (i + 1) + 1
+                if hidden_states.shape[2] - end < 4:  # if the last slice is too small, use the rest of the tensor
+                    end = hidden_states.shape[2]
+                sliced.append(hidden_states[:, :, size * i - 1 : end, :])
+                if end >= hidden_states.shape[2]:
+                    break
+        del hidden_states
+
+        for i in range(len(sliced)):
+            x = sliced[i]
+            sliced[i] = None
+
+            x = x.to(org_device)
+            x = _self.conv(x)
+            x = x.to(cpu_device)
+
+            # ここだけ雰囲気が違うのはCopilotのせい
+            if i == 0:
+                hidden_states = x
+            else:
+                hidden_states = torch.cat([hidden_states, x], dim=2)
+
+        hidden_states = hidden_states.to(org_device)
+        # print("downsample forward done", hidden_states.shape)
+        return hidden_states
+
+
+class SlicingDecoder(nn.Module):
+    def __init__(
+        self,
+        in_channels=3,
+        out_channels=3,
+        up_block_types=("UpDecoderBlock2D",),
+        block_out_channels=(64,),
+        layers_per_block=2,
+        norm_num_groups=32,
+        act_fn="silu",
+        num_slices=2,
+    ):
+        super().__init__()
+        self.layers_per_block = layers_per_block
+
+        self.conv_in = nn.Conv2d(in_channels, block_out_channels[-1], kernel_size=3, stride=1, padding=1)
+
+        self.mid_block = None
+        self.up_blocks = nn.ModuleList([])
+
+        # mid
+        self.mid_block = UNetMidBlock2D(
+            in_channels=block_out_channels[-1],
+            resnet_eps=1e-6,
+            resnet_act_fn=act_fn,
+            output_scale_factor=1,
+            resnet_time_scale_shift="default",
+            attn_num_head_channels=None,
+            resnet_groups=norm_num_groups,
+            temb_channels=None,
+        )
+        self.mid_block.attentions[0].set_use_memory_efficient_attention_xformers(True)  # とりあえずDiffusersのxformersを使う
+
+        # up
+        reversed_block_out_channels = list(reversed(block_out_channels))
+        output_channel = reversed_block_out_channels[0]
+        for i, up_block_type in enumerate(up_block_types):
+            prev_output_channel = output_channel
+            output_channel = reversed_block_out_channels[i]
+
+            is_final_block = i == len(block_out_channels) - 1
+
+            up_block = get_up_block(
+                up_block_type,
+                num_layers=self.layers_per_block + 1,
+                in_channels=prev_output_channel,
+                out_channels=output_channel,
+                prev_output_channel=None,
+                add_upsample=not is_final_block,
+                resnet_eps=1e-6,
+                resnet_act_fn=act_fn,
+                resnet_groups=norm_num_groups,
+                attn_num_head_channels=None,
+                temb_channels=None,
+            )
+            self.up_blocks.append(up_block)
+            prev_output_channel = output_channel
+
+        # out
+        self.conv_norm_out = nn.GroupNorm(num_channels=block_out_channels[0], num_groups=norm_num_groups, eps=1e-6)
+        self.conv_act = nn.SiLU()
+        self.conv_out = nn.Conv2d(block_out_channels[0], out_channels, 3, padding=1)
+
+        # replace forward of ResBlocks
+        def wrapper(func, module, num_slices):
+            def forward(*args, **kwargs):
+                return func(module, num_slices, *args, **kwargs)
+
+            return forward
+
+        self.num_slices = num_slices
+        div = num_slices / (2 ** (len(self.up_blocks) - 1))
+        print(f"initial divisor: {div}")
+        if div >= 2:
+            div = int(div)
+            for resnet in self.mid_block.resnets:
+                resnet.forward = wrapper(resblock_forward, resnet, div)
+            # midblock doesn't have upsample
+
+        for i, up_block in enumerate(self.up_blocks):
+            if div >= 2:
+                div = int(div)
+                # print(f"up block: {i} divisor: {div}")
+                for resnet in up_block.resnets:
+                    resnet.forward = wrapper(resblock_forward, resnet, div)
+                if up_block.upsamplers is not None:
+                    # print("has upsample")
+                    for upsample in up_block.upsamplers:
+                        upsample.forward = wrapper(self.upsample_forward, upsample, div * 2)
+            div *= 2
+
+    def forward(self, z):
+        sample = z
+        del z
+        sample = self.conv_in(sample)
+
+        # middle
+        sample = self.mid_block(sample)
+
+        # up
+        for i, up_block in enumerate(self.up_blocks):
+            sample = up_block(sample)
+
+        # post-process
+        sample = self.conv_norm_out(sample)
+        sample = self.conv_act(sample)
+
+        # conv_out with slicing because of VRAM usage
+        # conv_outはとてもVRAM使うのでスライスして対応
+        org_device = sample.device
+        cpu_device = torch.device("cpu")
+        sample = sample.to(cpu_device)
+
+        sliced = slice_h(sample, self.num_slices)
+        del sample
+        for i in range(len(sliced)):
+            x = sliced[i]
+            sliced[i] = None
+
+            x = x.to(org_device)
+            x = self.conv_out(x)
+            x = x.to(cpu_device)
+            sliced[i] = x
+        sample = cat_h(sliced)
+        del sliced
+
+        sample = sample.to(org_device)
+        return sample
+
+    def upsample_forward(self, _self, num_slices, hidden_states, output_size=None):
+        assert hidden_states.shape[1] == _self.channels
+        assert _self.use_conv_transpose == False and _self.use_conv
+
+        org_dtype = hidden_states.dtype
+        org_device = hidden_states.device
+        cpu_device = torch.device("cpu")
+
+        hidden_states = hidden_states.to(cpu_device)
+        sliced = slice_h(hidden_states, num_slices)
+        del hidden_states
+
+        for i in range(len(sliced)):
+            x = sliced[i]
+            sliced[i] = None
+
+            x = x.to(org_device)
+
+            # Cast to float32 to as 'upsample_nearest2d_out_frame' op does not support bfloat16
+            # TODO(Suraj): Remove this cast once the issue is fixed in PyTorch
+            # https://github.com/pytorch/pytorch/issues/86679
+            # PyTorch 2で直らないかね……
+            if org_dtype == torch.bfloat16:
+                x = x.to(torch.float32)
+
+            x = torch.nn.functional.interpolate(x, scale_factor=2.0, mode="nearest")
+
+            if org_dtype == torch.bfloat16:
+                x = x.to(org_dtype)
+
+            x = _self.conv(x)
+
+            # upsampleされてるのでpadは2になる
+            if i == 0:
+                x = x[:, :, :-2, :]
+            elif i == num_slices - 1:
+                x = x[:, :, 2:, :]
+            else:
+                x = x[:, :, 2:-2, :]
+
+            x = x.to(cpu_device)
+            sliced[i] = x
+            del x
+
+        hidden_states = torch.cat(sliced, dim=2)
+        # print("us hidden_states", hidden_states.shape)
+        del sliced
+
+        hidden_states = hidden_states.to(org_device)
+        return hidden_states
+
+
+class SlicingAutoencoderKL(ModelMixin, ConfigMixin):
+    r"""Variational Autoencoder (VAE) model with KL loss from the paper Auto-Encoding Variational Bayes by Diederik P. Kingma
+    and Max Welling.
+
+    This model inherits from [`ModelMixin`]. Check the superclass documentation for the generic methods the library
+    implements for all the model (such as downloading or saving, etc.)
+
+    Parameters:
+        in_channels (int, *optional*, defaults to 3): Number of channels in the input image.
+        out_channels (int,  *optional*, defaults to 3): Number of channels in the output.
+        down_block_types (`Tuple[str]`, *optional*, defaults to :
+            obj:`("DownEncoderBlock2D",)`): Tuple of downsample block types.
+        up_block_types (`Tuple[str]`, *optional*, defaults to :
+            obj:`("UpDecoderBlock2D",)`): Tuple of upsample block types.
+        block_out_channels (`Tuple[int]`, *optional*, defaults to :
+            obj:`(64,)`): Tuple of block output channels.
+        act_fn (`str`, *optional*, defaults to `"silu"`): The activation function to use.
+        latent_channels (`int`, *optional*, defaults to `4`): Number of channels in the latent space.
+        sample_size (`int`, *optional*, defaults to `32`): TODO
+    """
+
+    @register_to_config
+    def __init__(
+        self,
+        in_channels: int = 3,
+        out_channels: int = 3,
+        down_block_types: Tuple[str] = ("DownEncoderBlock2D",),
+        up_block_types: Tuple[str] = ("UpDecoderBlock2D",),
+        block_out_channels: Tuple[int] = (64,),
+        layers_per_block: int = 1,
+        act_fn: str = "silu",
+        latent_channels: int = 4,
+        norm_num_groups: int = 32,
+        sample_size: int = 32,
+        num_slices: int = 16,
+    ):
+        super().__init__()
+
+        # pass init params to Encoder
+        self.encoder = SlicingEncoder(
+            in_channels=in_channels,
+            out_channels=latent_channels,
+            down_block_types=down_block_types,
+            block_out_channels=block_out_channels,
+            layers_per_block=layers_per_block,
+            act_fn=act_fn,
+            norm_num_groups=norm_num_groups,
+            double_z=True,
+            num_slices=num_slices,
+        )
+
+        # pass init params to Decoder
+        self.decoder = SlicingDecoder(
+            in_channels=latent_channels,
+            out_channels=out_channels,
+            up_block_types=up_block_types,
+            block_out_channels=block_out_channels,
+            layers_per_block=layers_per_block,
+            norm_num_groups=norm_num_groups,
+            act_fn=act_fn,
+            num_slices=num_slices,
+        )
+
+        self.quant_conv = torch.nn.Conv2d(2 * latent_channels, 2 * latent_channels, 1)
+        self.post_quant_conv = torch.nn.Conv2d(latent_channels, latent_channels, 1)
+        self.use_slicing = False
+
+    def encode(self, x: torch.FloatTensor, return_dict: bool = True) -> AutoencoderKLOutput:
+        h = self.encoder(x)
+        moments = self.quant_conv(h)
+        posterior = DiagonalGaussianDistribution(moments)
+
+        if not return_dict:
+            return (posterior,)
+
+        return AutoencoderKLOutput(latent_dist=posterior)
+
+    def _decode(self, z: torch.FloatTensor, return_dict: bool = True) -> Union[DecoderOutput, torch.FloatTensor]:
+        z = self.post_quant_conv(z)
+        dec = self.decoder(z)
+
+        if not return_dict:
+            return (dec,)
+
+        return DecoderOutput(sample=dec)
+
+    # これはバッチ方向のスライシング　紛らわしい
+    def enable_slicing(self):
+        r"""
+        Enable sliced VAE decoding.
+
+        When this option is enabled, the VAE will split the input tensor in slices to compute decoding in several
+        steps. This is useful to save some memory and allow larger batch sizes.
+        """
+        self.use_slicing = True
+
+    def disable_slicing(self):
+        r"""
+        Disable sliced VAE decoding. If `enable_slicing` was previously invoked, this method will go back to computing
+        decoding in one step.
+        """
+        self.use_slicing = False
+
+    def decode(self, z: torch.FloatTensor, return_dict: bool = True) -> Union[DecoderOutput, torch.FloatTensor]:
+        if self.use_slicing and z.shape[0] > 1:
+            decoded_slices = [self._decode(z_slice).sample for z_slice in z.split(1)]
+            decoded = torch.cat(decoded_slices)
+        else:
+            decoded = self._decode(z).sample
+
+        if not return_dict:
+            return (decoded,)
+
+        return DecoderOutput(sample=decoded)
+
+    def forward(
+        self,
+        sample: torch.FloatTensor,
+        sample_posterior: bool = False,
+        return_dict: bool = True,
+        generator: Optional[torch.Generator] = None,
+    ) -> Union[DecoderOutput, torch.FloatTensor]:
+        r"""
+        Args:
+            sample (`torch.FloatTensor`): Input sample.
+            sample_posterior (`bool`, *optional*, defaults to `False`):
+                Whether to sample from the posterior.
+            return_dict (`bool`, *optional*, defaults to `True`):
+                Whether or not to return a [`DecoderOutput`] instead of a plain tuple.
+        """
+        x = sample
+        posterior = self.encode(x).latent_dist
+        if sample_posterior:
+            z = posterior.sample(generator=generator)
+        else:
+            z = posterior.mode()
+        dec = self.decode(z).sample
+
+        if not return_dict:
+            return (dec,)
+
+        return DecoderOutput(sample=dec)

library/train_util.py

@@ -19,6 +19,7 @@ from typing import (
     Union,
 )
 from accelerate import Accelerator
+import gc
 import glob
 import math
 import os
@@ -30,6 +31,7 @@ import toml
 
 from tqdm import tqdm
 import torch
+from torch.nn.parallel import DistributedDataParallel as DDP
 from torch.optim import Optimizer
 from torchvision import transforms
 from transformers import CLIPTokenizer
@@ -346,6 +348,8 @@ class DreamBoothSubset(BaseSubset):
         self.is_reg = is_reg
         self.class_tokens = class_tokens
         self.caption_extension = caption_extension
+        if self.caption_extension and not self.caption_extension.startswith("."):
+            self.caption_extension = "." + self.caption_extension
 
     def __eq__(self, other) -> bool:
         if not isinstance(other, DreamBoothSubset):
@@ -1079,16 +1083,37 @@ class DreamBoothDataset(BaseDataset):
 
             # 画像ファイルごとにプロンプトを読み込み、もしあればそちらを使う
             captions = []
+            missing_captions = []
             for img_path in img_paths:
                 cap_for_img = read_caption(img_path, subset.caption_extension)
                 if cap_for_img is None and subset.class_tokens is None:
-                    print(f"neither caption file nor class tokens are found. use empty caption for {img_path}")
+                    print(
+                        f"neither caption file nor class tokens are found. use empty caption for {img_path} / キャプションファイルもclass tokenも見つかりませんでした。空のキャプションを使用します: {img_path}"
+                    )
                     captions.append("")
+                    missing_captions.append(img_path)
                 else:
-                    captions.append(subset.class_tokens if cap_for_img is None else cap_for_img)
+                    if cap_for_img is None:
+                        captions.append(subset.class_tokens)
+                        missing_captions.append(img_path)
+                    else:
+                        captions.append(cap_for_img)
 
             self.set_tag_frequency(os.path.basename(subset.image_dir), captions)  # タグ頻度を記録
 
+            if missing_captions:
+                number_of_missing_captions = len(missing_captions)
+                number_of_missing_captions_to_show = 5
+                remaining_missing_captions = number_of_missing_captions - number_of_missing_captions_to_show
+
+                print(
+                    f"No caption file found for {number_of_missing_captions} images. Training will continue without captions for these images. If class token exists, it will be used. / {number_of_missing_captions}枚の画像にキャプションファイルが見つかりませんでした。これらの画像についてはキャプションなしで学習を続行します。class tokenが存在する場合はそれを使います。"
+                )
+                for i, missing_caption in enumerate(missing_captions):
+                    if i >= number_of_missing_captions_to_show:
+                        print(missing_caption + f"... and {remaining_missing_captions} more")
+                        break
+                    print(missing_caption)
             return img_paths, captions
 
         print("prepare images.")
@@ -1422,7 +1447,7 @@ def debug_dataset(train_dataset, show_input_ids=False):
 
     epoch = 1
     while True:
-        print(f"epoch: {epoch}")
+        print(f"\nepoch: {epoch}")
 
         steps = (epoch - 1) * len(train_dataset) + 1
         indices = list(range(len(train_dataset)))
@@ -1493,6 +1518,76 @@ def glob_images_pathlib(dir_path, recursive):
     return image_paths
 
 
+class MinimalDataset(BaseDataset):
+    def __init__(self, tokenizer, max_token_length, resolution, debug_dataset=False):
+        super().__init__(tokenizer, max_token_length, resolution, debug_dataset)
+
+        self.num_train_images = 0  # update in subclass
+        self.num_reg_images = 0  # update in subclass
+        self.datasets = [self]
+        self.batch_size = 1  # update in subclass
+
+        self.subsets = [self]
+        self.num_repeats = 1  # update in subclass if needed
+        self.img_count = 1  # update in subclass if needed
+        self.bucket_info = {}
+        self.is_reg = False
+        self.image_dir = "dummy"  # for metadata
+
+    def is_latent_cacheable(self) -> bool:
+        return False
+
+    def __len__(self):
+        raise NotImplementedError
+
+    # override to avoid shuffling buckets
+    def set_current_epoch(self, epoch):
+        self.current_epoch = epoch
+
+    def __getitem__(self, idx):
+        r"""
+        The subclass may have image_data for debug_dataset, which is a dict of ImageInfo objects.
+
+        Returns: example like this:
+
+            for i in range(batch_size):
+                image_key = ...  # whatever hashable
+                image_keys.append(image_key)
+
+                image = ...  # PIL Image
+                img_tensor = self.image_transforms(img)
+                images.append(img_tensor)
+
+                caption = ...  # str
+                input_ids = self.get_input_ids(caption)
+                input_ids_list.append(input_ids)
+
+                captions.append(caption)
+
+            images = torch.stack(images, dim=0)
+            input_ids_list = torch.stack(input_ids_list, dim=0)
+            example = {
+                "images": images,
+                "input_ids": input_ids_list,
+                "captions": captions,   # for debug_dataset
+                "latents": None,
+                "image_keys": image_keys,   # for debug_dataset
+                "loss_weights": torch.ones(batch_size, dtype=torch.float32),
+            }
+            return example
+        """
+        raise NotImplementedError
+
+
+def load_arbitrary_dataset(args, tokenizer) -> MinimalDataset:
+    module = ".".join(args.dataset_class.split(".")[:-1])
+    dataset_class = args.dataset_class.split(".")[-1]
+    module = importlib.import_module(module)
+    dataset_class = getattr(module, dataset_class)
+    train_dataset_group: MinimalDataset = dataset_class(tokenizer, args.max_token_length, args.resolution, args.debug_dataset)
+    return train_dataset_group
+
+
 # endregion
 
 # region モジュール入れ替え部
@@ -1763,6 +1858,7 @@ class FlashAttentionFunction(torch.autograd.function.Function):
 
 
 def replace_unet_modules(unet: diffusers.models.unet_2d_condition.UNet2DConditionModel, mem_eff_attn, xformers):
+    # unet is not used currently, but it is here for future use
     if mem_eff_attn:
         replace_unet_cross_attn_to_memory_efficient()
     elif xformers:
@@ -1770,7 +1866,7 @@ def replace_unet_modules(unet: diffusers.models.unet_2d_condition.UNet2DConditio
 
 
 def replace_unet_cross_attn_to_memory_efficient():
-    print("Replace CrossAttention.forward to use FlashAttention (not xformers)")
+    print("CrossAttention.forward has been replaced to FlashAttention (not xformers)")
     flash_func = FlashAttentionFunction
 
     def forward_flash_attn(self, x, context=None, mask=None):
@@ -1810,7 +1906,7 @@ def replace_unet_cross_attn_to_memory_efficient():
 
 
 def replace_unet_cross_attn_to_xformers():
-    print("Replace CrossAttention.forward to use xformers")
+    print("CrossAttention.forward has been replaced to enable xformers.")
     try:
         import xformers.ops
     except ImportError:
@@ -1852,6 +1948,60 @@ def replace_unet_cross_attn_to_xformers():
     diffusers.models.attention.CrossAttention.forward = forward_xformers
 
 
+"""
+def replace_vae_modules(vae: diffusers.models.AutoencoderKL, mem_eff_attn, xformers):
+    # vae is not used currently, but it is here for future use
+    if mem_eff_attn:
+        replace_vae_attn_to_memory_efficient()
+    elif xformers:
+        # とりあえずDiffusersのxformersを使う。AttentionがあるのはMidBlockのみ
+        print("Use Diffusers xformers for VAE")
+        vae.encoder.mid_block.attentions[0].set_use_memory_efficient_attention_xformers(True)
+        vae.decoder.mid_block.attentions[0].set_use_memory_efficient_attention_xformers(True)
+
+
+def replace_vae_attn_to_memory_efficient():
+    print("AttentionBlock.forward has been replaced to FlashAttention (not xformers)")
+    flash_func = FlashAttentionFunction
+
+    def forward_flash_attn(self, hidden_states):
+        print("forward_flash_attn")
+        q_bucket_size = 512
+        k_bucket_size = 1024
+
+        residual = hidden_states
+        batch, channel, height, width = hidden_states.shape
+
+        # norm
+        hidden_states = self.group_norm(hidden_states)
+
+        hidden_states = hidden_states.view(batch, channel, height * width).transpose(1, 2)
+
+        # proj to q, k, v
+        query_proj = self.query(hidden_states)
+        key_proj = self.key(hidden_states)
+        value_proj = self.value(hidden_states)
+
+        query_proj, key_proj, value_proj = map(
+            lambda t: rearrange(t, "b n (h d) -> b h n d", h=self.num_heads), (query_proj, key_proj, value_proj)
+        )
+
+        out = flash_func.apply(query_proj, key_proj, value_proj, None, False, q_bucket_size, k_bucket_size)
+
+        out = rearrange(out, "b h n d -> b n (h d)")
+
+        # compute next hidden_states
+        hidden_states = self.proj_attn(hidden_states)
+        hidden_states = hidden_states.transpose(-1, -2).reshape(batch, channel, height, width)
+
+        # res connect and rescale
+        hidden_states = (hidden_states + residual) / self.rescale_output_factor
+        return hidden_states
+
+    diffusers.models.attention.AttentionBlock.forward = forward_flash_attn
+"""
+
+
 # endregion
 
 
@@ -1883,7 +2033,7 @@ def add_optimizer_arguments(parser: argparse.ArgumentParser):
         "--optimizer_type",
         type=str,
         default="",
-        help="Optimizer to use / オプティマイザの種類: AdamW (default), AdamW8bit, Lion, SGDNesterov, SGDNesterov8bit, DAdaptation, AdaFactor",
+        help="Optimizer to use / オプティマイザの種類: AdamW (default), AdamW8bit, Lion8bit, Lion, SGDNesterov, SGDNesterov8bit, DAdaptation(DAdaptAdamPreprint), DAdaptAdaGrad, DAdaptAdam, DAdaptAdan, DAdaptAdanIP, DAdaptLion, DAdaptSGD, AdaFactor",
     )
 
     # backward compatibility
@@ -2119,6 +2269,30 @@ def add_training_arguments(parser: argparse.ArgumentParser, support_dreambooth:
         default=None,
         help="enable noise offset with this value (if enabled, around 0.1 is recommended) / Noise offsetを有効にしてこの値を設定する（有効にする場合は0.1程度を推奨）",
     )
+    parser.add_argument(
+        "--multires_noise_iterations",
+        type=int,
+        default=None,
+        help="enable multires noise with this number of iterations (if enabled, around 6-10 is recommended) / Multires noiseを有効にしてこのイテレーション数を設定する（有効にする場合は6-10程度を推奨）",
+    )
+    # parser.add_argument(
+    #     "--perlin_noise",
+    #     type=int,
+    #     default=None,
+    #     help="enable perlin noise and set the octaves / perlin noiseを有効にしてoctavesをこの値に設定する",
+    # )
+    parser.add_argument(
+        "--multires_noise_discount",
+        type=float,
+        default=0.3,
+        help="set discount value for multires noise (has no effect without --multires_noise_iterations) / Multires noiseのdiscount値を設定する（--multires_noise_iterations指定時のみ有効）",
+    )
+    parser.add_argument(
+        "--adaptive_noise_scale",
+        type=float,
+        default=None,
+        help="add `latent mean absolute value * this value` to noise_offset (disabled if None, default) / latentの平均値の絶対値 * この値をnoise_offsetに加算する（Noneの場合は無効、デフォルト）",
+    )
     parser.add_argument(
         "--lowram",
         action="store_true",
@@ -2191,6 +2365,27 @@ def verify_training_args(args: argparse.Namespace):
             "cache_latents_to_disk is enabled, so cache_latents is also enabled / cache_latents_to_diskが有効なため、cache_latentsを有効にします"
         )
 
+    # noise_offset, perlin_noise, multires_noise_iterations cannot be enabled at the same time
+    # Listを使って数えてもいいけど並べてしまえ
+    if args.noise_offset is not None and args.multires_noise_iterations is not None:
+        raise ValueError(
+            "noise_offset and multires_noise_iterations cannot be enabled at the same time / noise_offsetとmultires_noise_iterationsを同時に有効にできません"
+        )
+    # if args.noise_offset is not None and args.perlin_noise is not None:
+    #     raise ValueError("noise_offset and perlin_noise cannot be enabled at the same time / noise_offsetとperlin_noiseは同時に有効にできません")
+    # if args.perlin_noise is not None and args.multires_noise_iterations is not None:
+    #     raise ValueError(
+    #         "perlin_noise and multires_noise_iterations cannot be enabled at the same time / perlin_noiseとmultires_noise_iterationsを同時に有効にできません"
+    #     )
+
+    if args.adaptive_noise_scale is not None and args.noise_offset is None:
+        raise ValueError("adaptive_noise_scale requires noise_offset / adaptive_noise_scaleを使用するにはnoise_offsetが必要です")
+
+    if args.scale_v_pred_loss_like_noise_pred and not args.v_parameterization:
+        raise ValueError(
+            "scale_v_pred_loss_like_noise_pred can be enabled only with v_parameterization / scale_v_pred_loss_like_noise_predはv_parameterizationが有効なときのみ有効にできます"
+        )
+
 
 def add_dataset_arguments(
     parser: argparse.ArgumentParser, support_dreambooth: bool, support_caption: bool, support_caption_dropout: bool
@@ -2269,7 +2464,6 @@ def add_dataset_arguments(
         default=1,
         help="start learning at N tags (token means comma separated strinfloatgs) / タグ数をN個から増やしながら学習する",
     )
-
     parser.add_argument(
         "--token_warmup_step",
         type=float,
@@ -2277,6 +2471,13 @@ def add_dataset_arguments(
         help="tag length reaches maximum on N steps (or N*max_train_steps if N<1) / N（N<1ならN*max_train_steps）ステップでタグ長が最大になる。デフォルトは0（最初から最大）",
     )
 
+    parser.add_argument(
+        "--dataset_class",
+        type=str,
+        default=None,
+        help="dataset class for arbitrary dataset (package.module.Class) / 任意のデータセットを用いるときのクラス名 (package.module.Class)",
+    )
+
     if support_caption_dropout:
         # Textual Inversion はcaptionのdropoutをsupportしない
         # いわゆるtensorのDropoutと紛らわしいのでprefixにcaptionを付けておく　every_n_epochsは他と平仄を合わせてdefault Noneに
@@ -2448,7 +2649,7 @@ def resume_from_local_or_hf_if_specified(accelerator, args):
 
 
 def get_optimizer(args, trainable_params):
-    # "Optimizer to use: AdamW, AdamW8bit, Lion, SGDNesterov, SGDNesterov8bit, DAdaptation, Adafactor"
+    # "Optimizer to use: AdamW, AdamW8bit, Lion, SGDNesterov, SGDNesterov8bit, Lion8bit, DAdaptation(DAdaptAdamPreprint), DAdaptAdaGrad, DAdaptAdam, DAdaptAdan, DAdaptAdanIP, DAdaptLion, DAdaptSGD, Adafactor"
 
     optimizer_type = args.optimizer_type
     if args.use_8bit_adam:
@@ -2526,6 +2727,22 @@ def get_optimizer(args, trainable_params):
         optimizer_class = lion_pytorch.Lion
         optimizer = optimizer_class(trainable_params, lr=lr, **optimizer_kwargs)
 
+    elif optimizer_type == "Lion8bit".lower():
+        try:
+            import bitsandbytes as bnb
+        except ImportError:
+            raise ImportError("No bitsandbytes / bitsandbytesがインストールされていないようです")
+
+        print(f"use 8-bit Lion optimizer | {optimizer_kwargs}")
+        try:
+            optimizer_class = bnb.optim.Lion8bit
+        except AttributeError:
+            raise AttributeError(
+                "No Lion8bit. The version of bitsandbytes installed seems to be old. Please install 0.38.0 or later. / Lion8bitが定義されていません。インストールされているbitsandbytesのバージョンが古いようです。0.38.0以上をインストールしてください"
+            )
+
+        optimizer = optimizer_class(trainable_params, lr=lr, **optimizer_kwargs)
+
     elif optimizer_type == "SGDNesterov".lower():
         print(f"use SGD with Nesterov optimizer | {optimizer_kwargs}")
         if "momentum" not in optimizer_kwargs:
@@ -2535,13 +2752,8 @@ def get_optimizer(args, trainable_params):
         optimizer_class = torch.optim.SGD
         optimizer = optimizer_class(trainable_params, lr=lr, nesterov=True, **optimizer_kwargs)
 
-    elif optimizer_type == "DAdaptation".lower():
-        try:
-            import dadaptation
-        except ImportError:
-            raise ImportError("No dadaptation / dadaptation がインストールされていないようです")
-        print(f"use D-Adaptation Adam optimizer | {optimizer_kwargs}")
-
+    elif optimizer_type.startswith("DAdapt".lower()) or optimizer_type == "Prodigy".lower():
+        # check lr and lr_count, and print warning
         actual_lr = lr
         lr_count = 1
         if type(trainable_params) == list and type(trainable_params[0]) == dict:
@@ -2553,16 +2765,60 @@ def get_optimizer(args, trainable_params):
 
         if actual_lr <= 0.1:
             print(
-                f"learning rate is too low. If using dadaptation, set learning rate around 1.0 / 学習率が低すぎるようです。1.0前後の値を指定してください: lr={actual_lr}"
+                f"learning rate is too low. If using D-Adaptation or Prodigy, set learning rate around 1.0 / 学習率が低すぎるようです。D-AdaptationまたはProdigyの使用時は1.0前後の値を指定してください: lr={actual_lr}"
             )
             print("recommend option: lr=1.0 / 推奨は1.0です")
         if lr_count > 1:
             print(
-                f"when multiple learning rates are specified with dadaptation (e.g. for Text Encoder and U-Net), only the first one will take effect / D-Adaptationで複数の学習率を指定した場合（Text EncoderとU-Netなど）、最初の学習率のみが有効になります: lr={actual_lr}"
+                f"when multiple learning rates are specified with dadaptation (e.g. for Text Encoder and U-Net), only the first one will take effect / D-AdaptationまたはProdigyで複数の学習率を指定した場合（Text EncoderとU-Netなど）、最初の学習率のみが有効になります: lr={actual_lr}"
             )
 
-        optimizer_class = dadaptation.DAdaptAdam
-        optimizer = optimizer_class(trainable_params, lr=lr, **optimizer_kwargs)
+        if optimizer_type.startswith("DAdapt".lower()):
+            # DAdaptation family
+            # check dadaptation is installed
+            try:
+                import dadaptation
+                import dadaptation.experimental as experimental
+            except ImportError:
+                raise ImportError("No dadaptation / dadaptation がインストールされていないようです")
+
+            # set optimizer
+            if optimizer_type == "DAdaptation".lower() or optimizer_type == "DAdaptAdamPreprint".lower():
+                optimizer_class = experimental.DAdaptAdamPreprint
+                print(f"use D-Adaptation AdamPreprint optimizer | {optimizer_kwargs}")
+            elif optimizer_type == "DAdaptAdaGrad".lower():
+                optimizer_class = dadaptation.DAdaptAdaGrad
+                print(f"use D-Adaptation AdaGrad optimizer | {optimizer_kwargs}")
+            elif optimizer_type == "DAdaptAdam".lower():
+                optimizer_class = dadaptation.DAdaptAdam
+                print(f"use D-Adaptation Adam optimizer | {optimizer_kwargs}")
+            elif optimizer_type == "DAdaptAdan".lower():
+                optimizer_class = dadaptation.DAdaptAdan
+                print(f"use D-Adaptation Adan optimizer | {optimizer_kwargs}")
+            elif optimizer_type == "DAdaptAdanIP".lower():
+                optimizer_class = experimental.DAdaptAdanIP
+                print(f"use D-Adaptation AdanIP optimizer | {optimizer_kwargs}")
+            elif optimizer_type == "DAdaptLion".lower():
+                optimizer_class = dadaptation.DAdaptLion
+                print(f"use D-Adaptation Lion optimizer | {optimizer_kwargs}")
+            elif optimizer_type == "DAdaptSGD".lower():
+                optimizer_class = dadaptation.DAdaptSGD
+                print(f"use D-Adaptation SGD optimizer | {optimizer_kwargs}")
+            else:
+                raise ValueError(f"Unknown optimizer type: {optimizer_type}")
+
+            optimizer = optimizer_class(trainable_params, lr=lr, **optimizer_kwargs)
+        else:
+            # Prodigy
+            # check Prodigy is installed
+            try:
+                import prodigyopt
+            except ImportError:
+                raise ImportError("No Prodigy / Prodigy がインストールされていないようです")
+
+            print(f"use Prodigy optimizer | {optimizer_kwargs}")
+            optimizer_class = prodigyopt.Prodigy
+            optimizer = optimizer_class(trainable_params, lr=lr, **optimizer_kwargs)
 
     elif optimizer_type == "Adafactor".lower():
         # 引数を確認して適宜補正する
@@ -2850,16 +3106,16 @@ def prepare_dtype(args: argparse.Namespace):
     return weight_dtype, save_dtype
 
 
-def load_target_model(args: argparse.Namespace, weight_dtype, device="cpu"):
+def _load_target_model(args: argparse.Namespace, weight_dtype, device="cpu"):
     name_or_path = args.pretrained_model_name_or_path
     name_or_path = os.readlink(name_or_path) if os.path.islink(name_or_path) else name_or_path
     load_stable_diffusion_format = os.path.isfile(name_or_path)  # determine SD or Diffusers
     if load_stable_diffusion_format:
-        print("load StableDiffusion checkpoint")
+        print(f"load StableDiffusion checkpoint: {name_or_path}")
         text_encoder, vae, unet = model_util.load_models_from_stable_diffusion_checkpoint(args.v2, name_or_path, device)
     else:
         # Diffusers model is loaded to CPU
-        print("load Diffusers pretrained models")
+        print(f"load Diffusers pretrained models: {name_or_path}")
         try:
             pipe = StableDiffusionPipeline.from_pretrained(name_or_path, tokenizer=None, safety_checker=None)
         except EnvironmentError as ex:
@@ -2879,6 +3135,36 @@ def load_target_model(args: argparse.Namespace, weight_dtype, device="cpu"):
     return text_encoder, vae, unet, load_stable_diffusion_format
 
 
+def transform_if_model_is_DDP(text_encoder, unet, network=None):
+    # Transform text_encoder, unet and network from DistributedDataParallel
+    return (model.module if type(model) == DDP else model for model in [text_encoder, unet, network] if model is not None)
+
+
+def load_target_model(args, weight_dtype, accelerator):
+    # load models for each process
+    for pi in range(accelerator.state.num_processes):
+        if pi == accelerator.state.local_process_index:
+            print(f"loading model for process {accelerator.state.local_process_index}/{accelerator.state.num_processes}")
+
+            text_encoder, vae, unet, load_stable_diffusion_format = _load_target_model(
+                args, weight_dtype, accelerator.device if args.lowram else "cpu"
+            )
+
+            # work on low-ram device
+            if args.lowram:
+                text_encoder.to(accelerator.device)
+                unet.to(accelerator.device)
+                vae.to(accelerator.device)
+
+            gc.collect()
+            torch.cuda.empty_cache()
+        accelerator.wait_for_everyone()
+
+    text_encoder, unet = transform_if_model_is_DDP(text_encoder, unet)
+
+    return text_encoder, vae, unet, load_stable_diffusion_format
+
+
 def patch_accelerator_for_fp16_training(accelerator):
     org_unscale_grads = accelerator.scaler._unscale_grads_
 
@@ -3018,7 +3304,7 @@ def save_sd_model_on_epoch_end_or_stepwise(
             ckpt_name = get_step_ckpt_name(args, ext, global_step)
 
         ckpt_file = os.path.join(args.output_dir, ckpt_name)
-        print(f"saving checkpoint: {ckpt_file}")
+        print(f"\nsaving checkpoint: {ckpt_file}")
         model_util.save_stable_diffusion_checkpoint(
             args.v2, ckpt_file, text_encoder, unet, src_path, epoch_no, global_step, save_dtype, vae
         )
@@ -3044,7 +3330,7 @@ def save_sd_model_on_epoch_end_or_stepwise(
         else:
             out_dir = os.path.join(args.output_dir, STEP_DIFFUSERS_DIR_NAME.format(model_name, global_step))
 
-        print(f"saving model: {out_dir}")
+        print(f"\nsaving model: {out_dir}")
         model_util.save_diffusers_checkpoint(
             args.v2, out_dir, text_encoder, unet, src_path, vae=vae, use_safetensors=use_safetensors
         )
@@ -3062,16 +3348,17 @@ def save_sd_model_on_epoch_end_or_stepwise(
                 print(f"removing old model: {remove_out_dir}")
                 shutil.rmtree(remove_out_dir)
 
-    if on_epoch_end:
-        save_and_remove_state_on_epoch_end(args, accelerator, epoch_no)
-    else:
-        save_and_remove_state_stepwise(args, accelerator, global_step)
+    if args.save_state:
+        if on_epoch_end:
+            save_and_remove_state_on_epoch_end(args, accelerator, epoch_no)
+        else:
+            save_and_remove_state_stepwise(args, accelerator, global_step)
 
 
 def save_and_remove_state_on_epoch_end(args: argparse.Namespace, accelerator, epoch_no):
     model_name = default_if_none(args.output_name, DEFAULT_EPOCH_NAME)
 
-    print(f"saving state at epoch {epoch_no}")
+    print(f"\nsaving state at epoch {epoch_no}")
     os.makedirs(args.output_dir, exist_ok=True)
 
     state_dir = os.path.join(args.output_dir, EPOCH_STATE_NAME.format(model_name, epoch_no))
@@ -3092,7 +3379,7 @@ def save_and_remove_state_on_epoch_end(args: argparse.Namespace, accelerator, ep
 def save_and_remove_state_stepwise(args: argparse.Namespace, accelerator, step_no):
     model_name = default_if_none(args.output_name, DEFAULT_STEP_NAME)
 
-    print(f"saving state at step {step_no}")
+    print(f"\nsaving state at step {step_no}")
     os.makedirs(args.output_dir, exist_ok=True)
 
     state_dir = os.path.join(args.output_dir, STEP_STATE_NAME.format(model_name, step_no))
@@ -3117,7 +3404,7 @@ def save_and_remove_state_stepwise(args: argparse.Namespace, accelerator, step_n
 def save_state_on_train_end(args: argparse.Namespace, accelerator):
     model_name = default_if_none(args.output_name, DEFAULT_LAST_OUTPUT_NAME)
 
-    print("saving last state.")
+    print("\nsaving last state.")
     os.makedirs(args.output_dir, exist_ok=True)
 
     state_dir = os.path.join(args.output_dir, LAST_STATE_NAME.format(model_name))
@@ -3189,7 +3476,7 @@ def sample_images(
         if steps % args.sample_every_n_steps != 0 or epoch is not None:  # steps is not divisible or end of epoch
             return
 
-    print(f"generating sample images at step / サンプル画像生成 ステップ: {steps}")
+    print(f"\ngenerating sample images at step / サンプル画像生成 ステップ: {steps}")
     if not os.path.isfile(args.sample_prompts):
         print(f"No prompt file / プロンプトファイルがありません: {args.sample_prompts}")
         return
@@ -3198,8 +3485,21 @@ def sample_images(
     vae.to(device)
 
     # read prompts
-    with open(args.sample_prompts, "rt", encoding="utf-8") as f:
-        prompts = f.readlines()
+
+    # with open(args.sample_prompts, "rt", encoding="utf-8") as f:
+    #     prompts = f.readlines()
+
+    if args.sample_prompts.endswith(".txt"):
+        with open(args.sample_prompts, "r", encoding="utf-8") as f:
+            lines = f.readlines()
+        prompts = [line.strip() for line in lines if len(line.strip()) > 0 and line[0] != "#"]
+    elif args.sample_prompts.endswith(".toml"):
+        with open(args.sample_prompts, "r", encoding="utf-8") as f:
+            data = toml.load(f)
+        prompts = [dict(**data["prompt"], **subset) for subset in data["prompt"]["subset"]]
+    elif args.sample_prompts.endswith(".json"):
+        with open(args.sample_prompts, "r", encoding="utf-8") as f:
+            prompts = json.load(f)
 
     # schedulerを用意する
     sched_init_args = {}
@@ -3262,60 +3562,70 @@ def sample_images(
     os.makedirs(save_dir, exist_ok=True)
 
     rng_state = torch.get_rng_state()
-    cuda_rng_state = torch.cuda.get_rng_state()
+    cuda_rng_state = torch.cuda.get_rng_state() if torch.cuda.is_available() else None
 
     with torch.no_grad():
         with accelerator.autocast():
             for i, prompt in enumerate(prompts):
                 if not accelerator.is_main_process:
                     continue
-                prompt = prompt.strip()
-                if len(prompt) == 0 or prompt[0] == "#":
-                    continue
 
-                # subset of gen_img_diffusers
-                prompt_args = prompt.split(" --")
-                prompt = prompt_args[0]
-                negative_prompt = None
-                sample_steps = 30
-                width = height = 512
-                scale = 7.5
-                seed = None
-                for parg in prompt_args:
-                    try:
-                        m = re.match(r"w (\d+)", parg, re.IGNORECASE)
-                        if m:
-                            width = int(m.group(1))
-                            continue
+                if isinstance(prompt, dict):
+                    negative_prompt = prompt.get("negative_prompt")
+                    sample_steps = prompt.get("sample_steps", 30)
+                    width = prompt.get("width", 512)
+                    height = prompt.get("height", 512)
+                    scale = prompt.get("scale", 7.5)
+                    seed = prompt.get("seed")
+                    prompt = prompt.get("prompt")
+                else:
+                    # prompt = prompt.strip()
+                    # if len(prompt) == 0 or prompt[0] == "#":
+                    #     continue
 
-                        m = re.match(r"h (\d+)", parg, re.IGNORECASE)
-                        if m:
-                            height = int(m.group(1))
-                            continue
+                    # subset of gen_img_diffusers
+                    prompt_args = prompt.split(" --")
+                    prompt = prompt_args[0]
+                    negative_prompt = None
+                    sample_steps = 30
+                    width = height = 512
+                    scale = 7.5
+                    seed = None
+                    for parg in prompt_args:
+                        try:
+                            m = re.match(r"w (\d+)", parg, re.IGNORECASE)
+                            if m:
+                                width = int(m.group(1))
+                                continue
 
-                        m = re.match(r"d (\d+)", parg, re.IGNORECASE)
-                        if m:
-                            seed = int(m.group(1))
-                            continue
+                            m = re.match(r"h (\d+)", parg, re.IGNORECASE)
+                            if m:
+                                height = int(m.group(1))
+                                continue
 
-                        m = re.match(r"s (\d+)", parg, re.IGNORECASE)
-                        if m:  # steps
-                            sample_steps = max(1, min(1000, int(m.group(1))))
-                            continue
+                            m = re.match(r"d (\d+)", parg, re.IGNORECASE)
+                            if m:
+                                seed = int(m.group(1))
+                                continue
 
-                        m = re.match(r"l ([\d\.]+)", parg, re.IGNORECASE)
-                        if m:  # scale
-                            scale = float(m.group(1))
-                            continue
+                            m = re.match(r"s (\d+)", parg, re.IGNORECASE)
+                            if m:  # steps
+                                sample_steps = max(1, min(1000, int(m.group(1))))
+                                continue
 
-                        m = re.match(r"n (.+)", parg, re.IGNORECASE)
-                        if m:  # negative prompt
-                            negative_prompt = m.group(1)
-                            continue
+                            m = re.match(r"l ([\d\.]+)", parg, re.IGNORECASE)
+                            if m:  # scale
+                                scale = float(m.group(1))
+                                continue
 
-                    except ValueError as ex:
-                        print(f"Exception in parsing / 解析エラー: {parg}")
-                        print(ex)
+                            m = re.match(r"n (.+)", parg, re.IGNORECASE)
+                            if m:  # negative prompt
+                                negative_prompt = m.group(1)
+                                continue
+
+                        except ValueError as ex:
+                            print(f"Exception in parsing / 解析エラー: {parg}")
+                            print(ex)
 
                 if seed is not None:
                     torch.manual_seed(seed)
@@ -3369,7 +3679,8 @@ def sample_images(
     torch.cuda.empty_cache()
 
     torch.set_rng_state(rng_state)
-    torch.cuda.set_rng_state(cuda_rng_state)
+    if cuda_rng_state is not None:
+        torch.cuda.set_rng_state(cuda_rng_state)
     vae.to(org_vae_device)
 
 

networks/lora.py

@@ -19,7 +19,17 @@ class LoRAModule(torch.nn.Module):
     replaces forward method of the original Linear, instead of replacing the original Linear module.
     """
 
-    def __init__(self, lora_name, org_module: torch.nn.Module, multiplier=1.0, lora_dim=4, alpha=1):
+    def __init__(
+        self,
+        lora_name,
+        org_module: torch.nn.Module,
+        multiplier=1.0,
+        lora_dim=4,
+        alpha=1,
+        dropout=None,
+        rank_dropout=None,
+        module_dropout=None,
+    ):
         """if alpha == 0 or None, alpha is rank (no scaling)."""
         super().__init__()
         self.lora_name = lora_name
@@ -60,12 +70,87 @@ class LoRAModule(torch.nn.Module):
 
         self.multiplier = multiplier
         self.org_module = org_module  # remove in applying
+        self.dropout = dropout
+        self.rank_dropout = rank_dropout
+        self.module_dropout = module_dropout
 
     def apply_to(self):
         self.org_forward = self.org_module.forward
         self.org_module.forward = self.forward
         del self.org_module
 
+    def forward(self, x):
+        org_forwarded = self.org_forward(x)
+
+        # module dropout
+        if self.module_dropout is not None and self.training:
+            if torch.rand(1) < self.module_dropout:
+                return org_forwarded
+
+        lx = self.lora_down(x)
+
+        # normal dropout
+        if self.dropout is not None and self.training:
+            lx = torch.nn.functional.dropout(lx, p=self.dropout)
+
+        # rank dropout
+        if self.rank_dropout is not None and self.training:
+            mask = torch.rand((lx.size(0), self.lora_dim), device=lx.device) > self.rank_dropout
+            if len(lx.size()) == 3:
+                mask = mask.unsqueeze(1)  # for Text Encoder
+            elif len(lx.size()) == 4:
+                mask = mask.unsqueeze(-1).unsqueeze(-1)  # for Conv2d
+            lx = lx * mask
+
+            # scaling for rank dropout: treat as if the rank is changed
+            # maskから計算することも考えられるが、augmentation的な効果を期待してrank_dropoutを用いる
+            scale = self.scale * (1.0 / (1.0 - self.rank_dropout))  # redundant for readability
+        else:
+            scale = self.scale
+
+        lx = self.lora_up(lx)
+
+        return org_forwarded + lx * self.multiplier * scale
+
+
+class LoRAInfModule(LoRAModule):
+    def __init__(
+        self,
+        lora_name,
+        org_module: torch.nn.Module,
+        multiplier=1.0,
+        lora_dim=4,
+        alpha=1,
+        **kwargs,
+    ):
+        # no dropout for inference
+        super().__init__(lora_name, org_module, multiplier, lora_dim, alpha)
+
+        self.org_module_ref = [org_module]  # 後から参照できるように
+        self.enabled = True
+
+        # check regional or not by lora_name
+        self.text_encoder = False
+        if lora_name.startswith("lora_te_"):
+            self.regional = False
+            self.use_sub_prompt = True
+            self.text_encoder = True
+        elif "attn2_to_k" in lora_name or "attn2_to_v" in lora_name:
+            self.regional = False
+            self.use_sub_prompt = True
+        elif "time_emb" in lora_name:
+            self.regional = False
+            self.use_sub_prompt = False
+        else:
+            self.regional = True
+            self.use_sub_prompt = False
+
+        self.network: LoRANetwork = None
+
+    def set_network(self, network):
+        self.network = network
+
+    # freezeしてマージする
     def merge_to(self, sd, dtype, device):
         # get up/down weight
         up_weight = sd["lora_up.weight"].to(torch.float).to(device)
@@ -97,44 +182,45 @@ class LoRAModule(torch.nn.Module):
         org_sd["weight"] = weight.to(dtype)
         self.org_module.load_state_dict(org_sd)
 
+    # 復元できるマージのため、このモジュールのweightを返す
+    def get_weight(self, multiplier=None):
+        if multiplier is None:
+            multiplier = self.multiplier
+
+        # get up/down weight from module
+        up_weight = self.lora_up.weight.to(torch.float)
+        down_weight = self.lora_down.weight.to(torch.float)
+
+        # pre-calculated weight
+        if len(down_weight.size()) == 2:
+            # linear
+            weight = self.multiplier * (up_weight @ down_weight) * self.scale
+        elif down_weight.size()[2:4] == (1, 1):
+            # conv2d 1x1
+            weight = (
+                self.multiplier
+                * (up_weight.squeeze(3).squeeze(2) @ down_weight.squeeze(3).squeeze(2)).unsqueeze(2).unsqueeze(3)
+                * self.scale
+            )
+        else:
+            # conv2d 3x3
+            conved = torch.nn.functional.conv2d(down_weight.permute(1, 0, 2, 3), up_weight).permute(1, 0, 2, 3)
+            weight = self.multiplier * conved * self.scale
+
+        return weight
+
     def set_region(self, region):
         self.region = region
         self.region_mask = None
 
-    def forward(self, x):
-        return self.org_forward(x) + self.lora_up(self.lora_down(x)) * self.multiplier * self.scale
-
-
-class LoRAInfModule(LoRAModule):
-    def __init__(self, lora_name, org_module: torch.nn.Module, multiplier=1.0, lora_dim=4, alpha=1):
-        super().__init__(lora_name, org_module, multiplier, lora_dim, alpha)
-
-        # check regional or not by lora_name
-        self.text_encoder = False
-        if lora_name.startswith("lora_te_"):
-            self.regional = False
-            self.use_sub_prompt = True
-            self.text_encoder = True
-        elif "attn2_to_k" in lora_name or "attn2_to_v" in lora_name:
-            self.regional = False
-            self.use_sub_prompt = True
-        elif "time_emb" in lora_name:
-            self.regional = False
-            self.use_sub_prompt = False
-        else:
-            self.regional = True
-            self.use_sub_prompt = False
-
-        self.network: LoRANetwork = None
-
-    def set_network(self, network):
-        self.network = network
-
     def default_forward(self, x):
         # print("default_forward", self.lora_name, x.size())
         return self.org_forward(x) + self.lora_up(self.lora_down(x)) * self.multiplier * self.scale
 
     def forward(self, x):
+        if not self.enabled:
+            return self.org_forward(x)
+
         if self.network is None or self.network.sub_prompt_index is None:
             return self.default_forward(x)
         if not self.regional and not self.use_sub_prompt:
@@ -285,7 +371,36 @@ class LoRAInfModule(LoRAModule):
         return out
 
 
-def create_network(multiplier, network_dim, network_alpha, vae, text_encoder, unet, **kwargs):
+def parse_block_lr_kwargs(nw_kwargs):
+    down_lr_weight = nw_kwargs.get("down_lr_weight", None)
+    mid_lr_weight = nw_kwargs.get("mid_lr_weight", None)
+    up_lr_weight = nw_kwargs.get("up_lr_weight", None)
+
+    # 以上のいずれにも設定がない場合は無効としてNoneを返す
+    if down_lr_weight is None and mid_lr_weight is None and up_lr_weight is None:
+        return None, None, None
+
+    # extract learning rate weight for each block
+    if down_lr_weight is not None:
+        # if some parameters are not set, use zero
+        if "," in down_lr_weight:
+            down_lr_weight = [(float(s) if s else 0.0) for s in down_lr_weight.split(",")]
+
+    if mid_lr_weight is not None:
+        mid_lr_weight = float(mid_lr_weight)
+
+    if up_lr_weight is not None:
+        if "," in up_lr_weight:
+            up_lr_weight = [(float(s) if s else 0.0) for s in up_lr_weight.split(",")]
+
+    down_lr_weight, mid_lr_weight, up_lr_weight = get_block_lr_weight(
+        down_lr_weight, mid_lr_weight, up_lr_weight, float(nw_kwargs.get("block_lr_zero_threshold", 0.0))
+    )
+
+    return down_lr_weight, mid_lr_weight, up_lr_weight
+
+
+def create_network(multiplier, network_dim, network_alpha, vae, text_encoder, unet, neuron_dropout=None, **kwargs):
     if network_dim is None:
         network_dim = 4  # default
     if network_alpha is None:
@@ -303,9 +418,7 @@ def create_network(multiplier, network_dim, network_alpha, vae, text_encoder, un
 
     # block dim/alpha/lr
     block_dims = kwargs.get("block_dims", None)
-    down_lr_weight = kwargs.get("down_lr_weight", None)
-    mid_lr_weight = kwargs.get("mid_lr_weight", None)
-    up_lr_weight = kwargs.get("up_lr_weight", None)
+    down_lr_weight, mid_lr_weight, up_lr_weight = parse_block_lr_kwargs(kwargs)
 
     # 以上のいずれかに指定があればblockごとのdim(rank)を有効にする
     if block_dims is not None or down_lr_weight is not None or mid_lr_weight is not None or up_lr_weight is not None:
@@ -317,23 +430,6 @@ def create_network(multiplier, network_dim, network_alpha, vae, text_encoder, un
             block_dims, block_alphas, network_dim, network_alpha, conv_block_dims, conv_block_alphas, conv_dim, conv_alpha
         )
 
-        # extract learning rate weight for each block
-        if down_lr_weight is not None:
-            # if some parameters are not set, use zero
-            if "," in down_lr_weight:
-                down_lr_weight = [(float(s) if s else 0.0) for s in down_lr_weight.split(",")]
-
-        if mid_lr_weight is not None:
-            mid_lr_weight = float(mid_lr_weight)
-
-        if up_lr_weight is not None:
-            if "," in up_lr_weight:
-                up_lr_weight = [(float(s) if s else 0.0) for s in up_lr_weight.split(",")]
-
-        down_lr_weight, mid_lr_weight, up_lr_weight = get_block_lr_weight(
-            down_lr_weight, mid_lr_weight, up_lr_weight, float(kwargs.get("block_lr_zero_threshold", 0.0))
-        )
-
         # remove block dim/alpha without learning rate
         block_dims, block_alphas, conv_block_dims, conv_block_alphas = remove_block_dims_and_alphas(
             block_dims, block_alphas, conv_block_dims, conv_block_alphas, down_lr_weight, mid_lr_weight, up_lr_weight
@@ -344,6 +440,14 @@ def create_network(multiplier, network_dim, network_alpha, vae, text_encoder, un
         conv_block_dims = None
         conv_block_alphas = None
 
+    # rank/module dropout
+    rank_dropout = kwargs.get("rank_dropout", None)
+    if rank_dropout is not None:
+        rank_dropout = float(rank_dropout)
+    module_dropout = kwargs.get("module_dropout", None)
+    if module_dropout is not None:
+        module_dropout = float(module_dropout)
+
     # すごく引数が多いな ( ^ω^)･･･
     network = LoRANetwork(
         text_encoder,
@@ -351,6 +455,9 @@ def create_network(multiplier, network_dim, network_alpha, vae, text_encoder, un
         multiplier=multiplier,
         lora_dim=network_dim,
         alpha=network_alpha,
+        dropout=neuron_dropout,
+        rank_dropout=rank_dropout,
+        module_dropout=module_dropout,
         conv_lora_dim=conv_dim,
         conv_alpha=conv_alpha,
         block_dims=block_dims,
@@ -593,13 +700,19 @@ def create_network_from_weights(multiplier, file, vae, text_encoder, unet, weigh
     # support old LoRA without alpha
     for key in modules_dim.keys():
         if key not in modules_alpha:
-            modules_alpha = modules_dim[key]
+            modules_alpha[key] = modules_dim[key]
 
     module_class = LoRAInfModule if for_inference else LoRAModule
 
     network = LoRANetwork(
         text_encoder, unet, multiplier=multiplier, modules_dim=modules_dim, modules_alpha=modules_alpha, module_class=module_class
     )
+
+    # block lr
+    down_lr_weight, mid_lr_weight, up_lr_weight = parse_block_lr_kwargs(kwargs)
+    if up_lr_weight is not None or mid_lr_weight is not None or down_lr_weight is not None:
+        network.set_block_lr_weight(up_lr_weight, mid_lr_weight, down_lr_weight)
+
     return network, weights_sd
 
 
@@ -620,6 +733,9 @@ class LoRANetwork(torch.nn.Module):
         multiplier=1.0,
         lora_dim=4,
         alpha=1,
+        dropout=None,
+        rank_dropout=None,
+        module_dropout=None,
         conv_lora_dim=None,
         conv_alpha=None,
         block_dims=None,
@@ -646,11 +762,15 @@ class LoRANetwork(torch.nn.Module):
         self.alpha = alpha
         self.conv_lora_dim = conv_lora_dim
         self.conv_alpha = conv_alpha
+        self.dropout = dropout
+        self.rank_dropout = rank_dropout
+        self.module_dropout = module_dropout
 
         if modules_dim is not None:
             print(f"create LoRA network from weights")
         elif block_dims is not None:
             print(f"create LoRA network from block_dims")
+            print(f"neuron dropout: p={self.dropout}, rank dropout: p={self.rank_dropout}, module dropout: p={self.module_dropout}")
             print(f"block_dims: {block_dims}")
             print(f"block_alphas: {block_alphas}")
             if conv_block_dims is not None:
@@ -658,6 +778,7 @@ class LoRANetwork(torch.nn.Module):
                 print(f"conv_block_alphas: {conv_block_alphas}")
         else:
             print(f"create LoRA network. base dim (rank): {lora_dim}, alpha: {alpha}")
+            print(f"neuron dropout: p={self.dropout}, rank dropout: p={self.rank_dropout}, module dropout: p={self.module_dropout}")
             if self.conv_lora_dim is not None:
                 print(f"apply LoRA to Conv2d with kernel size (3,3). dim (rank): {self.conv_lora_dim}, alpha: {self.conv_alpha}")
 
@@ -704,7 +825,16 @@ class LoRANetwork(torch.nn.Module):
                                     skipped.append(lora_name)
                                 continue
 
-                            lora = module_class(lora_name, child_module, self.multiplier, dim, alpha)
+                            lora = module_class(
+                                lora_name,
+                                child_module,
+                                self.multiplier,
+                                dim,
+                                alpha,
+                                dropout=dropout,
+                                rank_dropout=rank_dropout,
+                                module_dropout=module_dropout,
+                            )
                             loras.append(lora)
             return loras, skipped
 
@@ -769,6 +899,10 @@ class LoRANetwork(torch.nn.Module):
             lora.apply_to()
             self.add_module(lora.lora_name, lora)
 
+    # マージできるかどうかを返す
+    def is_mergeable(self):
+        return True
+
     # TODO refactor to common function with apply_to
     def merge_to(self, text_encoder, unet, weights_sd, dtype, device):
         apply_text_encoder = apply_unet = False
@@ -797,7 +931,7 @@ class LoRANetwork(torch.nn.Module):
 
         print(f"weights are merged")
 
-    # 層別学習率用に層ごとの学習率に対する倍率を定義する
+    # 層別学習率用に層ごとの学習率に対する倍率を定義する　引数の順番が逆だがとりあえず気にしない
     def set_block_lr_weight(
         self,
         up_lr_weight: List[float] = None,
@@ -955,3 +1089,83 @@ class LoRANetwork(torch.nn.Module):
             w = (w + 1) // 2
 
         self.mask_dic = mask_dic
+
+    def backup_weights(self):
+        # 重みのバックアップを行う
+        loras: List[LoRAInfModule] = self.text_encoder_loras + self.unet_loras
+        for lora in loras:
+            org_module = lora.org_module_ref[0]
+            if not hasattr(org_module, "_lora_org_weight"):
+                sd = org_module.state_dict()
+                org_module._lora_org_weight = sd["weight"].detach().clone()
+                org_module._lora_restored = True
+
+    def restore_weights(self):
+        # 重みのリストアを行う
+        loras: List[LoRAInfModule] = self.text_encoder_loras + self.unet_loras
+        for lora in loras:
+            org_module = lora.org_module_ref[0]
+            if not org_module._lora_restored:
+                sd = org_module.state_dict()
+                sd["weight"] = org_module._lora_org_weight
+                org_module.load_state_dict(sd)
+                org_module._lora_restored = True
+
+    def pre_calculation(self):
+        # 事前計算を行う
+        loras: List[LoRAInfModule] = self.text_encoder_loras + self.unet_loras
+        for lora in loras:
+            org_module = lora.org_module_ref[0]
+            sd = org_module.state_dict()
+
+            org_weight = sd["weight"]
+            lora_weight = lora.get_weight().to(org_weight.device, dtype=org_weight.dtype)
+            sd["weight"] = org_weight + lora_weight
+            assert sd["weight"].shape == org_weight.shape
+            org_module.load_state_dict(sd)
+
+            org_module._lora_restored = False
+            lora.enabled = False
+
+    def apply_max_norm_regularization(self, max_norm_value, device):
+        downkeys = []
+        upkeys = []
+        alphakeys = []
+        norms = []
+        keys_scaled = 0
+
+        state_dict = self.state_dict()
+        for key in state_dict.keys():
+            if "lora_down" in key and "weight" in key:
+                downkeys.append(key)
+                upkeys.append(key.replace("lora_down", "lora_up"))
+                alphakeys.append(key.replace("lora_down.weight", "alpha"))
+
+        for i in range(len(downkeys)):
+            down = state_dict[downkeys[i]].to(device)
+            up = state_dict[upkeys[i]].to(device)
+            alpha = state_dict[alphakeys[i]].to(device)
+            dim = down.shape[0]
+            scale = alpha / dim
+
+            if up.shape[2:] == (1, 1) and down.shape[2:] == (1, 1):
+                updown = (up.squeeze(2).squeeze(2) @ down.squeeze(2).squeeze(2)).unsqueeze(2).unsqueeze(3)
+            elif up.shape[2:] == (3, 3) or down.shape[2:] == (3, 3):
+                updown = torch.nn.functional.conv2d(down.permute(1, 0, 2, 3), up).permute(1, 0, 2, 3)
+            else:
+                updown = up @ down
+
+            updown *= scale
+
+            norm = updown.norm().clamp(min=max_norm_value / 2)
+            desired = torch.clamp(norm, max=max_norm_value)
+            ratio = desired.cpu() / norm.cpu()
+            sqrt_ratio = ratio**0.5
+            if ratio != 1:
+                keys_scaled += 1
+                state_dict[upkeys[i]] *= sqrt_ratio
+                state_dict[downkeys[i]] *= sqrt_ratio
+            scalednorm = updown.norm() * ratio
+            norms.append(scalednorm.item())
+
+        return keys_scaled, sum(norms) / len(norms), max(norms)

networks/lora_interrogator.py

@@ -23,7 +23,7 @@ def interrogate(args):
   print(f"loading SD model: {args.sd_model}")
   args.pretrained_model_name_or_path = args.sd_model
   args.vae = None
-  text_encoder, vae, unet, _ = train_util.load_target_model(args,weights_dtype, DEVICE)
+  text_encoder, vae, unet, _ = train_util._load_target_model(args,weights_dtype, DEVICE)
 
   print(f"loading LoRA: {args.model}")
   network, weights_sd = lora.create_network_from_weights(1.0, args.model, vae, text_encoder, unet)

networks/merge_lora_old.py

@@ -148,13 +148,13 @@ def merge(args):
 
     merge_to_sd_model(text_encoder, unet, args.models, args.ratios, merge_dtype)
 
-    print(f"saving SD model to: {args.save_to}")
+    print(f"\nsaving SD model to: {args.save_to}")
     model_util.save_stable_diffusion_checkpoint(args.v2, args.save_to, text_encoder, unet,
                                                 args.sd_model, 0, 0, save_dtype, vae)
   else:
     state_dict, _, _ = merge_lora_models(args.models, args.ratios, merge_dtype)
 
-    print(f"saving model to: {args.save_to}")
+    print(f"\nsaving model to: {args.save_to}")
     save_to_file(args.save_to, state_dict, state_dict, save_dtype)
 
 

requirements.txt

@@ -9,7 +9,7 @@ pytorch-lightning==1.9.0
 bitsandbytes==0.35.0
 tensorboard==2.10.1
 safetensors==0.2.6
-gradio==3.16.2
+# gradio==3.16.2
 altair==4.2.2
 easygui==0.98.3
 toml==0.10.2
@@ -21,6 +21,6 @@ fairscale==0.4.13
 # for WD14 captioning
 # tensorflow<2.11
 tensorflow==2.10.1
-huggingface-hub==0.13.3
+huggingface-hub==0.15.1
 # for kohya_ss library
 .

tools/convert_diffusers20_original_sd.py

@@ -24,9 +24,9 @@ def convert(args):
     is_save_ckpt = len(os.path.splitext(args.model_to_save)[1]) > 0
 
     assert not is_load_ckpt or args.v1 != args.v2, f"v1 or v2 is required to load checkpoint / checkpointの読み込みにはv1/v2指定が必要です"
-    assert (
-        is_save_ckpt or args.reference_model is not None
-    ), f"reference model is required to save as Diffusers / Diffusers形式での保存には参照モデルが必要です"
+    # assert (
+    #     is_save_ckpt or args.reference_model is not None
+    # ), f"reference model is required to save as Diffusers / Diffusers形式での保存には参照モデルが必要です"
 
     # モデルを読み込む
     msg = "checkpoint" if is_load_ckpt else ("Diffusers" + (" as fp16" if args.fp16 else ""))
@@ -34,7 +34,7 @@ def convert(args):
 
     if is_load_ckpt:
         v2_model = args.v2
-        text_encoder, vae, unet = model_util.load_models_from_stable_diffusion_checkpoint(v2_model, args.model_to_load)
+        text_encoder, vae, unet = model_util.load_models_from_stable_diffusion_checkpoint(v2_model, args.model_to_load, unet_use_linear_projection_in_v2=args.unet_use_linear_projection)
     else:
         pipe = StableDiffusionPipeline.from_pretrained(
             args.model_to_load, torch_dtype=load_dtype, tokenizer=None, safety_checker=None
@@ -61,7 +61,7 @@ def convert(args):
         )
         print(f"model saved. total converted state_dict keys: {key_count}")
     else:
-        print(f"copy scheduler/tokenizer config from: {args.reference_model}")
+        print(f"copy scheduler/tokenizer config from: {args.reference_model if args.reference_model is not None else 'default model'}")
         model_util.save_diffusers_checkpoint(
             v2_model, args.model_to_save, text_encoder, unet, args.reference_model, vae, args.use_safetensors
         )
@@ -76,6 +76,9 @@ def setup_parser() -> argparse.ArgumentParser:
     parser.add_argument(
         "--v2", action="store_true", help="load v2.0 model (v1 or v2 is required to load checkpoint) / 2.0のモデルを読み込む"
     )
+    parser.add_argument(
+        "--unet_use_linear_projection", action="store_true", help="When saving v2 model as Diffusers, set U-Net config to `use_linear_projection=true` (to match stabilityai's model) / Diffusers形式でv2モデルを保存するときにU-Netの設定を`use_linear_projection=true`にする（stabilityaiのモデルと合わせる）"
+    )
     parser.add_argument(
         "--fp16",
         action="store_true",
@@ -100,7 +103,7 @@ def setup_parser() -> argparse.ArgumentParser:
         "--reference_model",
         type=str,
         default=None,
-        help="reference model for schduler/tokenizer, required in saving Diffusers, copy schduler/tokenizer from this / scheduler/tokenizerのコピー元のDiffusersモデル、Diffusers形式で保存するときに必要",
+        help="scheduler/tokenizerのコピー元Diffusersモデル、Diffusers形式で保存するときに使用される、省略時は`runwayml/stable-diffusion-v1-5` または `stabilityai/stable-diffusion-2-1` / reference Diffusers model to copy scheduler/tokenizer config from, used when saving as Diffusers format, default is `runwayml/stable-diffusion-v1-5` or `stabilityai/stable-diffusion-2-1`",
     )
     parser.add_argument(
         "--use_safetensors",

tools/original_control_net.py

@@ -62,7 +62,7 @@ def load_control_net(v2, unet, model):
 
   # 重みをU-Netに読み込めるようにする。ControlNetはSD版のstate dictなので、それを読み込む
   is_difference = "difference" in ctrl_sd_sd
-  print("ControlNet: loading difference")
+  print("ControlNet: loading difference:", is_difference)
 
   # ControlNetには存在しないキーがあるので、まず現在のU-NetでSD版の全keyを作っておく
   # またTransfer Controlの元weightとなる
@@ -123,7 +123,8 @@ def load_preprocess(prep_type: str):
 
 def preprocess_ctrl_net_hint_image(image):
   image = np.array(image).astype(np.float32) / 255.0
-  image = image[:, :, ::-1].copy()                         # rgb to bgr
+  # ControlNetのサンプルはcv2を使っているが、読み込みはGradioなので実はRGBになっている
+  # image = image[:, :, ::-1].copy()                         # rgb to bgr
   image = image[None].transpose(0, 3, 1, 2)       # nchw
   image = torch.from_numpy(image)
   return image                              # 0 to 1

train_db.py

@@ -23,7 +23,16 @@ from library.config_util import (
     BlueprintGenerator,
 )
 import library.custom_train_functions as custom_train_functions
-from library.custom_train_functions import apply_snr_weight, get_weighted_text_embeddings
+from library.custom_train_functions import (
+    apply_snr_weight,
+    get_weighted_text_embeddings,
+    prepare_scheduler_for_custom_training,
+    pyramid_noise_like,
+    apply_noise_offset,
+    scale_v_prediction_loss_like_noise_prediction,
+)
+
+# perlin_noise,
 
 
 def train(args):
@@ -37,26 +46,30 @@ def train(args):
 
     tokenizer = train_util.load_tokenizer(args)
 
-    blueprint_generator = BlueprintGenerator(ConfigSanitizer(True, False, True))
-    if args.dataset_config is not None:
-        print(f"Load dataset config from {args.dataset_config}")
-        user_config = config_util.load_user_config(args.dataset_config)
-        ignored = ["train_data_dir", "reg_data_dir"]
-        if any(getattr(args, attr) is not None for attr in ignored):
-            print(
-                "ignore following options because config file is found: {0} / 設定ファイルが利用されるため以下のオプションは無視されます: {0}".format(
-                    ", ".join(ignored)
+    # データセットを準備する
+    if args.dataset_class is None:
+        blueprint_generator = BlueprintGenerator(ConfigSanitizer(True, False, True))
+        if args.dataset_config is not None:
+            print(f"Load dataset config from {args.dataset_config}")
+            user_config = config_util.load_user_config(args.dataset_config)
+            ignored = ["train_data_dir", "reg_data_dir"]
+            if any(getattr(args, attr) is not None for attr in ignored):
+                print(
+                    "ignore following options because config file is found: {0} / 設定ファイルが利用されるため以下のオプションは無視されます: {0}".format(
+                        ", ".join(ignored)
+                    )
                 )
-            )
-    else:
-        user_config = {
-            "datasets": [
-                {"subsets": config_util.generate_dreambooth_subsets_config_by_subdirs(args.train_data_dir, args.reg_data_dir)}
-            ]
-        }
+        else:
+            user_config = {
+                "datasets": [
+                    {"subsets": config_util.generate_dreambooth_subsets_config_by_subdirs(args.train_data_dir, args.reg_data_dir)}
+                ]
+            }
 
-    blueprint = blueprint_generator.generate(user_config, args, tokenizer=tokenizer)
-    train_dataset_group = config_util.generate_dataset_group_by_blueprint(blueprint.dataset_group)
+        blueprint = blueprint_generator.generate(user_config, args, tokenizer=tokenizer)
+        train_dataset_group = config_util.generate_dataset_group_by_blueprint(blueprint.dataset_group)
+    else:
+        train_dataset_group = train_util.load_arbitrary_dataset(args, tokenizer)
 
     current_epoch = Value("i", 0)
     current_step = Value("i", 0)
@@ -92,7 +105,7 @@ def train(args):
     weight_dtype, save_dtype = train_util.prepare_dtype(args)
 
     # モデルを読み込む
-    text_encoder, vae, unet, load_stable_diffusion_format = train_util.load_target_model(args, weight_dtype)
+    text_encoder, vae, unet, load_stable_diffusion_format = train_util.load_target_model(args, weight_dtype, accelerator)
 
     # verify load/save model formats
     if load_stable_diffusion_format:
@@ -196,6 +209,9 @@ def train(args):
     else:
         unet, optimizer, train_dataloader, lr_scheduler = accelerator.prepare(unet, optimizer, train_dataloader, lr_scheduler)
 
+    # transform DDP after prepare
+    text_encoder, unet = train_util.transform_if_model_is_DDP(text_encoder, unet)
+
     if not train_text_encoder:
         text_encoder.to(accelerator.device, dtype=weight_dtype)  # to avoid 'cpu' vs 'cuda' error
 
@@ -230,6 +246,7 @@ def train(args):
     noise_scheduler = DDPMScheduler(
         beta_start=0.00085, beta_end=0.012, beta_schedule="scaled_linear", num_train_timesteps=1000, clip_sample=False
     )
+    prepare_scheduler_for_custom_training(noise_scheduler, accelerator.device)
 
     if accelerator.is_main_process:
         accelerator.init_trackers("dreambooth" if args.log_tracker_name is None else args.log_tracker_name)
@@ -237,7 +254,7 @@ def train(args):
     loss_list = []
     loss_total = 0.0
     for epoch in range(num_train_epochs):
-        print(f"epoch {epoch+1}/{num_train_epochs}")
+        print(f"\nepoch {epoch+1}/{num_train_epochs}")
         current_epoch.value = epoch + 1
 
         # 指定したステップ数までText Encoderを学習する：epoch最初の状態
@@ -268,8 +285,11 @@ def train(args):
                 # Sample noise that we'll add to the latents
                 noise = torch.randn_like(latents, device=latents.device)
                 if args.noise_offset:
-                    # https://www.crosslabs.org//blog/diffusion-with-offset-noise
-                    noise += args.noise_offset * torch.randn((latents.shape[0], latents.shape[1], 1, 1), device=latents.device)
+                    noise = apply_noise_offset(latents, noise, args.noise_offset, args.adaptive_noise_scale)
+                elif args.multires_noise_iterations:
+                    noise = pyramid_noise_like(noise, latents.device, args.multires_noise_iterations, args.multires_noise_discount)
+                # elif args.perlin_noise:
+                #     noise = perlin_noise(noise, latents.device, args.perlin_noise)  # only shape of noise is used currently
 
                 # Get the text embedding for conditioning
                 with torch.set_grad_enabled(global_step < args.stop_text_encoder_training):
@@ -297,7 +317,8 @@ def train(args):
                 noisy_latents = noise_scheduler.add_noise(latents, noise, timesteps)
 
                 # Predict the noise residual
-                noise_pred = unet(noisy_latents, timesteps, encoder_hidden_states).sample
+                with accelerator.autocast():
+                    noise_pred = unet(noisy_latents, timesteps, encoder_hidden_states).sample
 
                 if args.v_parameterization:
                     # v-parameterization training
@@ -313,6 +334,8 @@ def train(args):
 
                 if args.min_snr_gamma:
                     loss = apply_snr_weight(loss, timesteps, noise_scheduler, args.min_snr_gamma)
+                if args.scale_v_pred_loss_like_noise_pred:
+                    loss = scale_v_prediction_loss_like_noise_prediction(loss, timesteps, noise_scheduler)
 
                 loss = loss.mean()  # 平均なのでbatch_sizeで割る必要なし
 
@@ -361,7 +384,7 @@ def train(args):
             current_loss = loss.detach().item()
             if args.logging_dir is not None:
                 logs = {"loss": current_loss, "lr": float(lr_scheduler.get_last_lr()[0])}
-                if args.optimizer_type.lower() == "DAdaptation".lower():  # tracking d*lr value
+                if args.optimizer_type.lower().startswith("DAdapt".lower()) or args.optimizer_type.lower() == "Prodigy".lower():  # tracking d*lr value
                     logs["lr/d*lr"] = (
                         lr_scheduler.optimizers[0].param_groups[0]["d"] * lr_scheduler.optimizers[0].param_groups[0]["lr"]
                     )

train_network.py

@@ -1,4 +1,3 @@
-from torch.nn.parallel import DistributedDataParallel as DDP
 import importlib
 import argparse
 import gc
@@ -26,13 +25,27 @@ from library.config_util import (
 )
 import library.huggingface_util as huggingface_util
 import library.custom_train_functions as custom_train_functions
-from library.custom_train_functions import apply_snr_weight, get_weighted_text_embeddings
+from library.custom_train_functions import (
+    apply_snr_weight,
+    get_weighted_text_embeddings,
+    prepare_scheduler_for_custom_training,
+    pyramid_noise_like,
+    apply_noise_offset,
+    scale_v_prediction_loss_like_noise_prediction,
+)
 
 
 # TODO 他のスクリプトと共通化する
-def generate_step_logs(args: argparse.Namespace, current_loss, avr_loss, lr_scheduler):
+def generate_step_logs(
+    args: argparse.Namespace, current_loss, avr_loss, lr_scheduler, keys_scaled=None, mean_norm=None, maximum_norm=None
+):
     logs = {"loss/current": current_loss, "loss/average": avr_loss}
 
+    if keys_scaled is not None:
+        logs["max_norm/keys_scaled"] = keys_scaled
+        logs["max_norm/average_key_norm"] = mean_norm
+        logs["max_norm/max_key_norm"] = maximum_norm
+
     lrs = lr_scheduler.get_last_lr()
 
     if args.network_train_text_encoder_only or len(lrs) <= 2:  # not block lr (or single block)
@@ -44,7 +57,7 @@ def generate_step_logs(args: argparse.Namespace, current_loss, avr_loss, lr_sche
             logs["lr/textencoder"] = float(lrs[0])
             logs["lr/unet"] = float(lrs[-1])  # may be same to textencoder
 
-        if args.optimizer_type.lower() == "DAdaptation".lower():  # tracking d*lr value of unet.
+        if args.optimizer_type.lower().startswith("DAdapt".lower()) or args.optimizer_type.lower() == "Prodigy".lower():  # tracking d*lr value of unet.
             logs["lr/d*lr"] = lr_scheduler.optimizers[-1].param_groups[0]["d"] * lr_scheduler.optimizers[-1].param_groups[0]["lr"]
     else:
         idx = 0
@@ -54,7 +67,7 @@ def generate_step_logs(args: argparse.Namespace, current_loss, avr_loss, lr_sche
 
         for i in range(idx, len(lrs)):
             logs[f"lr/group{i}"] = float(lrs[i])
-            if args.optimizer_type.lower() == "DAdaptation".lower():
+            if args.optimizer_type.lower().startswith("DAdapt".lower()) or args.optimizer_type.lower() == "Prodigy".lower():
                 logs[f"lr/d*lr/group{i}"] = (
                     lr_scheduler.optimizers[-1].param_groups[i]["d"] * lr_scheduler.optimizers[-1].param_groups[i]["lr"]
                 )
@@ -79,42 +92,50 @@ def train(args):
     tokenizer = train_util.load_tokenizer(args)
 
     # データセットを準備する
-    blueprint_generator = BlueprintGenerator(ConfigSanitizer(True, True, True))
-    if use_user_config:
-        print(f"Load dataset config from {args.dataset_config}")
-        user_config = config_util.load_user_config(args.dataset_config)
-        ignored = ["train_data_dir", "reg_data_dir", "in_json"]
-        if any(getattr(args, attr) is not None for attr in ignored):
-            print(
-                "ignore following options because config file is found: {0} / 設定ファイルが利用されるため以下のオプションは無視されます: {0}".format(
-                    ", ".join(ignored)
+    if args.dataset_class is None:
+        blueprint_generator = BlueprintGenerator(ConfigSanitizer(True, True, True))
+        if use_user_config:
+            print(f"Loading dataset config from {args.dataset_config}")
+            user_config = config_util.load_user_config(args.dataset_config)
+            ignored = ["train_data_dir", "reg_data_dir", "in_json"]
+            if any(getattr(args, attr) is not None for attr in ignored):
+                print(
+                    "ignoring the following options because config file is found: {0} / 設定ファイルが利用されるため以下のオプションは無視されます: {0}".format(
+                        ", ".join(ignored)
+                    )
                 )
-            )
-    else:
-        if use_dreambooth_method:
-            print("Use DreamBooth method.")
-            user_config = {
-                "datasets": [
-                    {"subsets": config_util.generate_dreambooth_subsets_config_by_subdirs(args.train_data_dir, args.reg_data_dir)}
-                ]
-            }
         else:
-            print("Train with captions.")
-            user_config = {
-                "datasets": [
-                    {
-                        "subsets": [
-                            {
-                                "image_dir": args.train_data_dir,
-                                "metadata_file": args.in_json,
-                            }
-                        ]
-                    }
-                ]
-            }
+            if use_dreambooth_method:
+                print("Using DreamBooth method.")
+                user_config = {
+                    "datasets": [
+                        {
+                            "subsets": config_util.generate_dreambooth_subsets_config_by_subdirs(
+                                args.train_data_dir, args.reg_data_dir
+                            )
+                        }
+                    ]
+                }
+            else:
+                print("Training with captions.")
+                user_config = {
+                    "datasets": [
+                        {
+                            "subsets": [
+                                {
+                                    "image_dir": args.train_data_dir,
+                                    "metadata_file": args.in_json,
+                                }
+                            ]
+                        }
+                    ]
+                }
 
-    blueprint = blueprint_generator.generate(user_config, args, tokenizer=tokenizer)
-    train_dataset_group = config_util.generate_dataset_group_by_blueprint(blueprint.dataset_group)
+        blueprint = blueprint_generator.generate(user_config, args, tokenizer=tokenizer)
+        train_dataset_group = config_util.generate_dataset_group_by_blueprint(blueprint.dataset_group)
+    else:
+        # use arbitrary dataset class
+        train_dataset_group = train_util.load_arbitrary_dataset(args, tokenizer)
 
     current_epoch = Value("i", 0)
     current_step = Value("i", 0)
@@ -136,7 +157,7 @@ def train(args):
         ), "when caching latents, either color_aug or random_crop cannot be used / latentをキャッシュするときはcolor_augとrandom_cropは使えません"
 
     # acceleratorを準備する
-    print("prepare accelerator")
+    print("preparing accelerator")
     accelerator, unwrap_model = train_util.prepare_accelerator(args)
     is_main_process = accelerator.is_main_process
 
@@ -144,28 +165,35 @@ def train(args):
     weight_dtype, save_dtype = train_util.prepare_dtype(args)
 
     # モデルを読み込む
-    for pi in range(accelerator.state.num_processes):
-        # TODO: modify other training scripts as well
-        if pi == accelerator.state.local_process_index:
-            print(f"loading model for process {accelerator.state.local_process_index}/{accelerator.state.num_processes}")
-
-            text_encoder, vae, unet, _ = train_util.load_target_model(
-                args, weight_dtype, accelerator.device if args.lowram else "cpu"
-            )
-
-            # work on low-ram device
-            if args.lowram:
-                text_encoder.to(accelerator.device)
-                unet.to(accelerator.device)
-                vae.to(accelerator.device)
-
-            gc.collect()
-            torch.cuda.empty_cache()
-        accelerator.wait_for_everyone()
+    text_encoder, vae, unet, _ = train_util.load_target_model(args, weight_dtype, accelerator)
 
     # モデルに xformers とか memory efficient attention を組み込む
     train_util.replace_unet_modules(unet, args.mem_eff_attn, args.xformers)
 
+    # 差分追加学習のためにモデルを読み込む
+    import sys
+
+    sys.path.append(os.path.dirname(__file__))
+    print("import network module:", args.network_module)
+    network_module = importlib.import_module(args.network_module)
+
+    if args.base_weights is not None:
+        # base_weights が指定されている場合は、指定された重みを読み込みマージする
+        for i, weight_path in enumerate(args.base_weights):
+            if args.base_weights_multiplier is None or len(args.base_weights_multiplier) <= i:
+                multiplier = 1.0
+            else:
+                multiplier = args.base_weights_multiplier[i]
+
+            print(f"merging module: {weight_path} with multiplier {multiplier}")
+
+            module, weights_sd = network_module.create_network_from_weights(
+                multiplier, weight_path, vae, text_encoder, unet, for_inference=True
+            )
+            module.merge_to(text_encoder, unet, weights_sd, weight_dtype, accelerator.device if args.lowram else "cpu")
+
+        print(f"all weights merged: {', '.join(args.base_weights)}")
+
     # 学習を準備する
     if cache_latents:
         vae.to(accelerator.device, dtype=weight_dtype)
@@ -181,12 +209,6 @@ def train(args):
         accelerator.wait_for_everyone()
 
     # prepare network
-    import sys
-
-    sys.path.append(os.path.dirname(__file__))
-    print("import network module:", args.network_module)
-    network_module = importlib.import_module(args.network_module)
-
     net_kwargs = {}
     if args.network_args is not None:
         for net_arg in args.network_args:
@@ -194,12 +216,23 @@ def train(args):
             net_kwargs[key] = value
 
     # if a new network is added in future, add if ~ then blocks for each network (;'∀')
-    network = network_module.create_network(1.0, args.network_dim, args.network_alpha, vae, text_encoder, unet, **net_kwargs)
+    if args.dim_from_weights:
+        network, _ = network_module.create_network_from_weights(1, args.network_weights, vae, text_encoder, unet, **net_kwargs)
+    else:
+        # LyCORIS will work with this...
+        network = network_module.create_network(
+            1.0, args.network_dim, args.network_alpha, vae, text_encoder, unet, neuron_dropout=args.network_dropout, **net_kwargs
+        )
     if network is None:
         return
 
     if hasattr(network, "prepare_network"):
         network.prepare_network(args)
+    if args.scale_weight_norms and not hasattr(network, "apply_max_norm_regularization"):
+        print(
+            "warning: scale_weight_norms is specified but the network does not support it / scale_weight_normsが指定されていますが、ネットワークが対応していません"
+        )
+        args.scale_weight_norms = False
 
     train_unet = not args.network_train_text_encoder_only
     train_text_encoder = not args.network_train_unet_only
@@ -207,7 +240,7 @@ def train(args):
 
     if args.network_weights is not None:
         info = network.load_weights(args.network_weights)
-        print(f"load network weights from {args.network_weights}: {info}")
+        print(f"loaded network weights from {args.network_weights}: {info}")
 
     if args.gradient_checkpointing:
         unet.enable_gradient_checkpointing()
@@ -215,7 +248,7 @@ def train(args):
         network.enable_gradient_checkpointing()  # may have no effect
 
     # 学習に必要なクラスを準備する
-    print("prepare optimizer, data loader etc.")
+    print("preparing optimizer, data loader etc.")
 
     # 後方互換性を確保するよ
     try:
@@ -260,7 +293,7 @@ def train(args):
         assert (
             args.mixed_precision == "fp16"
         ), "full_fp16 requires mixed precision='fp16' / full_fp16を使う場合はmixed_precision='fp16'を指定してください。"
-        print("enable full fp16 training.")
+        print("enabling full fp16 training.")
         network.to(weight_dtype)
 
     # acceleratorがなんかよろしくやってくれるらしい
@@ -279,6 +312,9 @@ def train(args):
     else:
         network, optimizer, train_dataloader, lr_scheduler = accelerator.prepare(network, optimizer, train_dataloader, lr_scheduler)
 
+    # transform DDP after prepare (train_network here only)
+    text_encoder, unet, network = train_util.transform_if_model_is_DDP(text_encoder, unet, network)
+
     unet.requires_grad_(False)
     unet.to(accelerator.device, dtype=weight_dtype)
     text_encoder.requires_grad_(False)
@@ -288,23 +324,14 @@ def train(args):
         text_encoder.train()
 
         # set top parameter requires_grad = True for gradient checkpointing works
-        if type(text_encoder) == DDP:
-            text_encoder.module.text_model.embeddings.requires_grad_(True)
-        else:
-            text_encoder.text_model.embeddings.requires_grad_(True)
+        text_encoder.text_model.embeddings.requires_grad_(True)
     else:
         unet.eval()
         text_encoder.eval()
 
-    # support DistributedDataParallel
-    if type(text_encoder) == DDP:
-        text_encoder = text_encoder.module
-        unet = unet.module
-        network = network.module
-
     network.prepare_grad_etc(text_encoder, unet)
 
-    if not cache_latents:
+    if not cache_latents:  # キャッシュしない場合はVAEを使うのでVAEを準備する
         vae.requires_grad_(False)
         vae.eval()
         vae.to(accelerator.device, dtype=weight_dtype)
@@ -356,7 +383,8 @@ def train(args):
         "ss_lr_scheduler": args.lr_scheduler,
         "ss_network_module": args.network_module,
         "ss_network_dim": args.network_dim,  # None means default because another network than LoRA may have another default dim
-        "ss_network_alpha": args.network_alpha,  # some networks may not use this value
+        "ss_network_alpha": args.network_alpha,  # some networks may not have alpha
+        "ss_network_dropout": args.network_dropout,  # some networks may not have dropout
         "ss_mixed_precision": args.mixed_precision,
         "ss_full_fp16": bool(args.full_fp16),
         "ss_v2": bool(args.v2),
@@ -366,6 +394,9 @@ def train(args):
         "ss_seed": args.seed,
         "ss_lowram": args.lowram,
         "ss_noise_offset": args.noise_offset,
+        "ss_multires_noise_iterations": args.multires_noise_iterations,
+        "ss_multires_noise_discount": args.multires_noise_discount,
+        "ss_adaptive_noise_scale": args.adaptive_noise_scale,
         "ss_training_comment": args.training_comment,  # will not be updated after training
         "ss_sd_scripts_commit_hash": train_util.get_git_revision_hash(),
         "ss_optimizer": optimizer_name + (f"({optimizer_args})" if len(optimizer_args) > 0 else ""),
@@ -376,6 +407,7 @@ def train(args):
         "ss_face_crop_aug_range": args.face_crop_aug_range,
         "ss_prior_loss_weight": args.prior_loss_weight,
         "ss_min_snr_gamma": args.min_snr_gamma,
+        "ss_scale_weight_norms": args.scale_weight_norms,
     }
 
     if use_user_config:
@@ -537,6 +569,8 @@ def train(args):
     noise_scheduler = DDPMScheduler(
         beta_start=0.00085, beta_end=0.012, beta_schedule="scaled_linear", num_train_timesteps=1000, clip_sample=False
     )
+    prepare_scheduler_for_custom_training(noise_scheduler, accelerator.device)
+
     if accelerator.is_main_process:
         accelerator.init_trackers("network_train" if args.log_tracker_name is None else args.log_tracker_name)
 
@@ -544,17 +578,18 @@ def train(args):
     loss_total = 0.0
     del train_dataset_group
 
-    # if hasattr(network, "on_step_start"):
-    #     on_step_start = network.on_step_start
-    # else:
-    #     on_step_start = lambda *args, **kwargs: None
+    # callback for step start
+    if hasattr(network, "on_step_start"):
+        on_step_start = network.on_step_start
+    else:
+        on_step_start = lambda *args, **kwargs: None
 
     # function for saving/removing
     def save_model(ckpt_name, unwrapped_nw, steps, epoch_no, force_sync_upload=False):
         os.makedirs(args.output_dir, exist_ok=True)
         ckpt_file = os.path.join(args.output_dir, ckpt_name)
 
-        print(f"saving checkpoint: {ckpt_file}")
+        print(f"\nsaving checkpoint: {ckpt_file}")
         metadata["ss_training_finished_at"] = str(time.time())
         metadata["ss_steps"] = str(steps)
         metadata["ss_epoch"] = str(epoch_no)
@@ -572,7 +607,7 @@ def train(args):
     # training loop
     for epoch in range(num_train_epochs):
         if is_main_process:
-            print(f"epoch {epoch+1}/{num_train_epochs}")
+            print(f"\nepoch {epoch+1}/{num_train_epochs}")
         current_epoch.value = epoch + 1
 
         metadata["ss_epoch"] = str(epoch + 1)
@@ -582,7 +617,7 @@ def train(args):
         for step, batch in enumerate(train_dataloader):
             current_step.value = global_step
             with accelerator.accumulate(network):
-                # on_step_start(text_encoder, unet)
+                on_step_start(text_encoder, unet)
 
                 with torch.no_grad():
                     if "latents" in batch and batch["latents"] is not None:
@@ -607,11 +642,13 @@ def train(args):
                     else:
                         input_ids = batch["input_ids"].to(accelerator.device)
                         encoder_hidden_states = train_util.get_hidden_states(args, input_ids, tokenizer, text_encoder, weight_dtype)
+
                 # Sample noise that we'll add to the latents
                 noise = torch.randn_like(latents, device=latents.device)
                 if args.noise_offset:
-                    # https://www.crosslabs.org//blog/diffusion-with-offset-noise
-                    noise += args.noise_offset * torch.randn((latents.shape[0], latents.shape[1], 1, 1), device=latents.device)
+                    noise = apply_noise_offset(latents, noise, args.noise_offset, args.adaptive_noise_scale)
+                elif args.multires_noise_iterations:
+                    noise = pyramid_noise_like(noise, latents.device, args.multires_noise_iterations, args.multires_noise_discount)
 
                 # Sample a random timestep for each image
                 timesteps = torch.randint(0, noise_scheduler.config.num_train_timesteps, (b_size,), device=latents.device)
@@ -638,6 +675,8 @@ def train(args):
 
                 if args.min_snr_gamma:
                     loss = apply_snr_weight(loss, timesteps, noise_scheduler, args.min_snr_gamma)
+                if args.scale_v_pred_loss_like_noise_pred:
+                    loss = scale_v_prediction_loss_like_noise_prediction(loss, timesteps, noise_scheduler)
 
                 loss = loss.mean()  # 平均なのでbatch_sizeで割る必要なし
 
@@ -650,6 +689,14 @@ def train(args):
                 lr_scheduler.step()
                 optimizer.zero_grad(set_to_none=True)
 
+            if args.scale_weight_norms:
+                keys_scaled, mean_norm, maximum_norm = network.apply_max_norm_regularization(
+                    args.scale_weight_norms, accelerator.device
+                )
+                max_mean_logs = {"Keys Scaled": keys_scaled, "Average key norm": mean_norm}
+            else:
+                keys_scaled, mean_norm, maximum_norm = None, None, None
+
             # Checks if the accelerator has performed an optimization step behind the scenes
             if accelerator.sync_gradients:
                 progress_bar.update(1)
@@ -685,8 +732,11 @@ def train(args):
             logs = {"loss": avr_loss}  # , "lr": lr_scheduler.get_last_lr()[0]}
             progress_bar.set_postfix(**logs)
 
+            if args.scale_weight_norms:
+                progress_bar.set_postfix(**{**max_mean_logs, **logs})
+
             if args.logging_dir is not None:
-                logs = generate_step_logs(args, current_loss, avr_loss, lr_scheduler)
+                logs = generate_step_logs(args, current_loss, avr_loss, lr_scheduler, keys_scaled, mean_norm, maximum_norm)
                 accelerator.log(logs, step=global_step)
 
             if global_step >= args.max_train_steps:
@@ -733,7 +783,7 @@ def train(args):
     if is_main_process:
         ckpt_name = train_util.get_last_ckpt_name(args, "." + args.save_model_as)
         save_model(ckpt_name, network, global_step, num_train_epochs, force_sync_upload=True)
-        
+
         print("model saved.")
 
 
@@ -770,6 +820,12 @@ def setup_parser() -> argparse.ArgumentParser:
         default=1,
         help="alpha for LoRA weight scaling, default 1 (same as network_dim for same behavior as old version) / LoRaの重み調整のalpha値、デフォルト1（旧バージョンと同じ動作をするにはnetwork_dimと同じ値を指定）",
     )
+    parser.add_argument(
+        "--network_dropout",
+        type=float,
+        default=None,
+        help="Drops neurons out of training every step (0 or None is default behavior (no dropout), 1 would drop all neurons) / 訓練時に毎ステップでニューロンをdropする（0またはNoneはdropoutなし、1は全ニューロンをdropout）",
+    )
     parser.add_argument(
         "--network_args", type=str, default=None, nargs="*", help="additional argmuments for network (key=value) / ネットワークへの追加の引数"
     )
@@ -780,7 +836,31 @@ def setup_parser() -> argparse.ArgumentParser:
     parser.add_argument(
         "--training_comment", type=str, default=None, help="arbitrary comment string stored in metadata / メタデータに記録する任意のコメント文字列"
     )
-
+    parser.add_argument(
+        "--dim_from_weights",
+        action="store_true",
+        help="automatically determine dim (rank) from network_weights / dim (rank)をnetwork_weightsで指定した重みから自動で決定する",
+    )
+    parser.add_argument(
+        "--scale_weight_norms",
+        type=float,
+        default=None,
+        help="Scale the weight of each key pair to help prevent overtraing via exploding gradients. (1 is a good starting point) / 重みの値をスケーリングして勾配爆発を防ぐ（1が初期値としては適当）",
+    )
+    parser.add_argument(
+        "--base_weights",
+        type=str,
+        default=None,
+        nargs="*",
+        help="network weights to merge into the model before training / 学習前にあらかじめモデルにマージするnetworkの重みファイル",
+    )
+    parser.add_argument(
+        "--base_weights_multiplier",
+        type=float,
+        default=None,
+        nargs="*",
+        help="multiplier for network weights to merge into the model before training / 学習前にあらかじめモデルにマージするnetworkの重みの倍率",
+    )
     return parser
 
 

train_textual_inversion.py

@@ -20,7 +20,13 @@ from library.config_util import (
     BlueprintGenerator,
 )
 import library.custom_train_functions as custom_train_functions
-from library.custom_train_functions import apply_snr_weight
+from library.custom_train_functions import (
+    apply_snr_weight,
+    prepare_scheduler_for_custom_training,
+    pyramid_noise_like,
+    apply_noise_offset,
+    scale_v_prediction_loss_like_noise_prediction,
+)
 
 imagenet_templates_small = [
     "a photo of a {}",
@@ -98,7 +104,7 @@ def train(args):
     weight_dtype, save_dtype = train_util.prepare_dtype(args)
 
     # モデルを読み込む
-    text_encoder, vae, unet, _ = train_util.load_target_model(args, weight_dtype)
+    text_encoder, vae, unet, _ = train_util.load_target_model(args, weight_dtype, accelerator)
 
     # Convert the init_word to token_id
     if args.init_word is not None:
@@ -147,43 +153,46 @@ def train(args):
     print(f"create embeddings for {args.num_vectors_per_token} tokens, for {args.token_string}")
 
     # データセットを準備する
-    blueprint_generator = BlueprintGenerator(ConfigSanitizer(True, True, False))
-    if args.dataset_config is not None:
-        print(f"Load dataset config from {args.dataset_config}")
-        user_config = config_util.load_user_config(args.dataset_config)
-        ignored = ["train_data_dir", "reg_data_dir", "in_json"]
-        if any(getattr(args, attr) is not None for attr in ignored):
-            print(
-                "ignore following options because config file is found: {0} / 設定ファイルが利用されるため以下のオプションは無視されます: {0}".format(
-                    ", ".join(ignored)
+    if args.dataset_class is None:
+        blueprint_generator = BlueprintGenerator(ConfigSanitizer(True, True, False))
+        if args.dataset_config is not None:
+            print(f"Load dataset config from {args.dataset_config}")
+            user_config = config_util.load_user_config(args.dataset_config)
+            ignored = ["train_data_dir", "reg_data_dir", "in_json"]
+            if any(getattr(args, attr) is not None for attr in ignored):
+                print(
+                    "ignore following options because config file is found: {0} / 設定ファイルが利用されるため以下のオプションは無視されます: {0}".format(
+                        ", ".join(ignored)
+                    )
                 )
-            )
-    else:
-        use_dreambooth_method = args.in_json is None
-        if use_dreambooth_method:
-            print("Use DreamBooth method.")
-            user_config = {
-                "datasets": [
-                    {"subsets": config_util.generate_dreambooth_subsets_config_by_subdirs(args.train_data_dir, args.reg_data_dir)}
-                ]
-            }
         else:
-            print("Train with captions.")
-            user_config = {
-                "datasets": [
-                    {
-                        "subsets": [
-                            {
-                                "image_dir": args.train_data_dir,
-                                "metadata_file": args.in_json,
-                            }
-                        ]
-                    }
-                ]
-            }
+            use_dreambooth_method = args.in_json is None
+            if use_dreambooth_method:
+                print("Use DreamBooth method.")
+                user_config = {
+                    "datasets": [
+                        {"subsets": config_util.generate_dreambooth_subsets_config_by_subdirs(args.train_data_dir, args.reg_data_dir)}
+                    ]
+                }
+            else:
+                print("Train with captions.")
+                user_config = {
+                    "datasets": [
+                        {
+                            "subsets": [
+                                {
+                                    "image_dir": args.train_data_dir,
+                                    "metadata_file": args.in_json,
+                                }
+                            ]
+                        }
+                    ]
+                }
 
-    blueprint = blueprint_generator.generate(user_config, args, tokenizer=tokenizer)
-    train_dataset_group = config_util.generate_dataset_group_by_blueprint(blueprint.dataset_group)
+        blueprint = blueprint_generator.generate(user_config, args, tokenizer=tokenizer)
+        train_dataset_group = config_util.generate_dataset_group_by_blueprint(blueprint.dataset_group)
+    else:
+        train_dataset_group = train_util.load_arbitrary_dataset(args, tokenizer)
 
     current_epoch = Value("i", 0)
     current_step = Value("i", 0)
@@ -280,6 +289,9 @@ def train(args):
         text_encoder, optimizer, train_dataloader, lr_scheduler
     )
 
+    # transform DDP after prepare
+    text_encoder, unet = train_util.transform_if_model_is_DDP(text_encoder, unet)
+
     index_no_updates = torch.arange(len(tokenizer)) < token_ids[0]
     # print(len(index_no_updates), torch.sum(index_no_updates))
     orig_embeds_params = unwrap_model(text_encoder).get_input_embeddings().weight.data.detach().clone()
@@ -335,6 +347,7 @@ def train(args):
     noise_scheduler = DDPMScheduler(
         beta_start=0.00085, beta_end=0.012, beta_schedule="scaled_linear", num_train_timesteps=1000, clip_sample=False
     )
+    prepare_scheduler_for_custom_training(noise_scheduler, accelerator.device)
 
     if accelerator.is_main_process:
         accelerator.init_trackers("textual_inversion" if args.log_tracker_name is None else args.log_tracker_name)
@@ -344,7 +357,7 @@ def train(args):
         os.makedirs(args.output_dir, exist_ok=True)
         ckpt_file = os.path.join(args.output_dir, ckpt_name)
 
-        print(f"saving checkpoint: {ckpt_file}")
+        print(f"\nsaving checkpoint: {ckpt_file}")
         save_weights(ckpt_file, embs, save_dtype)
         if args.huggingface_repo_id is not None:
             huggingface_util.upload(args, ckpt_file, "/" + ckpt_name, force_sync_upload=force_sync_upload)
@@ -357,7 +370,7 @@ def train(args):
 
     # training loop
     for epoch in range(num_train_epochs):
-        print(f"epoch {epoch+1}/{num_train_epochs}")
+        print(f"\nepoch {epoch+1}/{num_train_epochs}")
         current_epoch.value = epoch + 1
 
         text_encoder.train()
@@ -384,8 +397,9 @@ def train(args):
                 # Sample noise that we'll add to the latents
                 noise = torch.randn_like(latents, device=latents.device)
                 if args.noise_offset:
-                    # https://www.crosslabs.org//blog/diffusion-with-offset-noise
-                    noise += args.noise_offset * torch.randn((latents.shape[0], latents.shape[1], 1, 1), device=latents.device)
+                    noise = apply_noise_offset(latents, noise, args.noise_offset, args.adaptive_noise_scale)
+                elif args.multires_noise_iterations:
+                    noise = pyramid_noise_like(noise, latents.device, args.multires_noise_iterations, args.multires_noise_discount)
 
                 # Sample a random timestep for each image
                 timesteps = torch.randint(0, noise_scheduler.config.num_train_timesteps, (b_size,), device=latents.device)
@@ -408,12 +422,14 @@ def train(args):
                 loss = torch.nn.functional.mse_loss(noise_pred.float(), target.float(), reduction="none")
                 loss = loss.mean([1, 2, 3])
 
-                if args.min_snr_gamma:
-                    loss = apply_snr_weight(loss, timesteps, noise_scheduler, args.min_snr_gamma)
-
                 loss_weights = batch["loss_weights"]  # 各sampleごとのweight
                 loss = loss * loss_weights
 
+                if args.min_snr_gamma:
+                    loss = apply_snr_weight(loss, timesteps, noise_scheduler, args.min_snr_gamma)
+                if args.scale_v_pred_loss_like_noise_pred:
+                    loss = scale_v_prediction_loss_like_noise_prediction(loss, timesteps, noise_scheduler)
+
                 loss = loss.mean()  # 平均なのでbatch_sizeで割る必要なし
 
                 accelerator.backward(loss)
@@ -460,7 +476,7 @@ def train(args):
             current_loss = loss.detach().item()
             if args.logging_dir is not None:
                 logs = {"loss": current_loss, "lr": float(lr_scheduler.get_last_lr()[0])}
-                if args.optimizer_type.lower() == "DAdaptation".lower():  # tracking d*lr value
+                if args.optimizer_type.lower().startswith("DAdapt".lower()) or args.optimizer_type.lower() == "Prodigy".lower():  # tracking d*lr value
                     logs["lr/d*lr"] = (
                         lr_scheduler.optimizers[0].param_groups[0]["d"] * lr_scheduler.optimizers[0].param_groups[0]["lr"]
                     )

train_textual_inversion_XTI.py

@@ -20,7 +20,13 @@ from library.config_util import (
     BlueprintGenerator,
 )
 import library.custom_train_functions as custom_train_functions
-from library.custom_train_functions import apply_snr_weight
+from library.custom_train_functions import (
+    apply_snr_weight,
+    prepare_scheduler_for_custom_training,
+    pyramid_noise_like,
+    apply_noise_offset,
+    scale_v_prediction_loss_like_noise_prediction,
+)
 from XTI_hijack import unet_forward_XTI, downblock_forward_XTI, upblock_forward_XTI
 
 imagenet_templates_small = [
@@ -88,6 +94,9 @@ def train(args):
         print(
             "sample_every_n_steps and sample_every_n_epochs are not supported in this script currently / sample_every_n_stepsとsample_every_n_epochsは現在このスクリプトではサポートされていません"
         )
+    assert (
+        args.dataset_class is None
+    ), "dataset_class is not supported in this script currently / dataset_classは現在このスクリプトではサポートされていません"
 
     cache_latents = args.cache_latents
 
@@ -104,7 +113,7 @@ def train(args):
     weight_dtype, save_dtype = train_util.prepare_dtype(args)
 
     # モデルを読み込む
-    text_encoder, vae, unet, _ = train_util.load_target_model(args, weight_dtype)
+    text_encoder, vae, unet, _ = train_util.load_target_model(args, weight_dtype, accelerator)
 
     # Convert the init_word to token_id
     if args.init_word is not None:
@@ -314,6 +323,9 @@ def train(args):
         text_encoder, optimizer, train_dataloader, lr_scheduler
     )
 
+    # transform DDP after prepare
+    text_encoder, unet = train_util.transform_if_model_is_DDP(text_encoder, unet)
+
     index_no_updates = torch.arange(len(tokenizer)) < token_ids_XTI[0]
     # print(len(index_no_updates), torch.sum(index_no_updates))
     orig_embeds_params = unwrap_model(text_encoder).get_input_embeddings().weight.data.detach().clone()
@@ -369,6 +381,7 @@ def train(args):
     noise_scheduler = DDPMScheduler(
         beta_start=0.00085, beta_end=0.012, beta_schedule="scaled_linear", num_train_timesteps=1000, clip_sample=False
     )
+    prepare_scheduler_for_custom_training(noise_scheduler, accelerator.device)
 
     if accelerator.is_main_process:
         accelerator.init_trackers("textual_inversion" if args.log_tracker_name is None else args.log_tracker_name)
@@ -378,7 +391,7 @@ def train(args):
         os.makedirs(args.output_dir, exist_ok=True)
         ckpt_file = os.path.join(args.output_dir, ckpt_name)
 
-        print(f"saving checkpoint: {ckpt_file}")
+        print(f"\nsaving checkpoint: {ckpt_file}")
         save_weights(ckpt_file, embs, save_dtype)
         if args.huggingface_repo_id is not None:
             huggingface_util.upload(args, ckpt_file, "/" + ckpt_name, force_sync_upload=force_sync_upload)
@@ -391,7 +404,7 @@ def train(args):
 
     # training loop
     for epoch in range(num_train_epochs):
-        print(f"epoch {epoch+1}/{num_train_epochs}")
+        print(f"\nepoch {epoch+1}/{num_train_epochs}")
         current_epoch.value = epoch + 1
 
         text_encoder.train()
@@ -423,8 +436,9 @@ def train(args):
                 # Sample noise that we'll add to the latents
                 noise = torch.randn_like(latents, device=latents.device)
                 if args.noise_offset:
-                    # https://www.crosslabs.org//blog/diffusion-with-offset-noise
-                    noise += args.noise_offset * torch.randn((latents.shape[0], latents.shape[1], 1, 1), device=latents.device)
+                    noise = apply_noise_offset(latents, noise, args.noise_offset, args.adaptive_noise_scale)
+                elif args.multires_noise_iterations:
+                    noise = pyramid_noise_like(noise, latents.device, args.multires_noise_iterations, args.multires_noise_discount)
 
                 # Sample a random timestep for each image
                 timesteps = torch.randint(0, noise_scheduler.config.num_train_timesteps, (b_size,), device=latents.device)
@@ -447,11 +461,13 @@ def train(args):
                 loss = torch.nn.functional.mse_loss(noise_pred.float(), target.float(), reduction="none")
                 loss = loss.mean([1, 2, 3])
 
+                loss_weights = batch["loss_weights"]  # 各sampleごとのweight
+
+                loss = loss * loss_weights
                 if args.min_snr_gamma:
                     loss = apply_snr_weight(loss, timesteps, noise_scheduler, args.min_snr_gamma)
-
-                loss_weights = batch["loss_weights"]  # 各sampleごとのweight
-                loss = loss * loss_weights
+                if args.scale_v_pred_loss_like_noise_pred:
+                    loss = scale_v_prediction_loss_like_noise_prediction(loss, timesteps, noise_scheduler)
 
                 loss = loss.mean()  # 平均なのでbatch_sizeで割る必要なし
 
@@ -499,7 +515,7 @@ def train(args):
             current_loss = loss.detach().item()
             if args.logging_dir is not None:
                 logs = {"loss": current_loss, "lr": float(lr_scheduler.get_last_lr()[0])}
-                if args.optimizer_type.lower() == "DAdaptation".lower():  # tracking d*lr value
+                if args.optimizer_type.lower().startswith("DAdapt".lower()) or args.optimizer_type.lower() == "Prodigy".lower():  # tracking d*lr value
                     logs["lr/d*lr"] = (
                         lr_scheduler.optimizers[0].param_groups[0]["d"] * lr_scheduler.optimizers[0].param_groups[0]["lr"]
                     )