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Fix DDP issues and Support DDP for all training scripts (#448)

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* Fix DDP bugs

* Fix DDP bugs for finetune and db

* refactor model loader

* fix DDP network

* try to fix DDP network in train unet only

* remove unuse DDP import

* refactor DDP transform

* refactor DDP transform

* fix sample images bugs

* change DDP tranform location

* add autocast to train_db

* support DDP in XTI

* Clear DDP import
This commit is contained in:
Isotr0py
2023-05-03 09:37:47 +08:00
committed by GitHub
parent a7485e4d9e
commit e1143caf38
7 changed files with 58 additions and 37 deletions
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5
fine_tune.py
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@@ -90,7 +90,7 @@ 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 +228,9 @@ 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_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)