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fix crashing when max_norm is diabled

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Kohya S
2023-06-01 19:32:22 +09:00
parent 9c7237157d
commit a5c38e5d5b
1 changed files with 27 additions and 16 deletions
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39
train_network.py
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@@ -25,16 +25,25 @@ 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, pyramid_noise_like, apply_noise_offset, max_norm
from library.custom_train_functions import (
apply_snr_weight,
get_weighted_text_embeddings,
pyramid_noise_like,
apply_noise_offset,
max_norm,
)
# 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, keys_scaled=None, mean_norm=None, maximum_norm=None):
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 args.scale_weight_norms:
logs["keys_scaled"] = keys_scaled
logs["average_key_norm"] = mean_norm
logs["max_key_norm"] = maximum_norm
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()
@@ -200,14 +209,15 @@ def train(args):
if args.dim_from_weights:
network, _ = network_module.create_network_from_weights(1, args.network_weights, vae, text_encoder, unet, **net_kwargs)
else:
network = network_module.create_network(1.0, args.network_dim, args.network_alpha, vae, text_encoder, unet, args.dropout, **net_kwargs)
network = network_module.create_network(
1.0, args.network_dim, args.network_alpha, vae, text_encoder, unet, args.dropout, **net_kwargs
)
if network is None:
return
if hasattr(network, "prepare_network"):
network.prepare_network(args)
train_unet = not args.network_train_text_encoder_only
train_text_encoder = not args.network_train_unet_only
network.apply_to(text_encoder, unet, train_text_encoder, train_unet)
@@ -587,7 +597,6 @@ def train(args):
network.on_epoch_start(text_encoder, unet)
for step, batch in enumerate(train_dataloader):
current_step.value = global_step
with accelerator.accumulate(network):
on_step_start(text_encoder, unet)
@@ -661,8 +670,10 @@ def train(args):
optimizer.zero_grad(set_to_none=True)
if args.scale_weight_norms:
keys_scaled, mean_norm, maximum_norm = max_norm(network.state_dict(), args.scale_weight_norms)
max_mean_logs = {"Keys Scaled": keys_scaled, "Average key norm": mean_norm}
keys_scaled, mean_norm, maximum_norm = max_norm(network.state_dict(), args.scale_weight_norms)
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:
@@ -698,9 +709,9 @@ def train(args):
avr_loss = loss_total / len(loss_list)
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)
if args.scale_weight_norms:
progress_bar.set_postfix(**max_mean_logs)
if args.logging_dir is not None:
logs = generate_step_logs(args, current_loss, avr_loss, lr_scheduler, keys_scaled, mean_norm, maximum_norm)
@@ -806,7 +817,7 @@ def setup_parser() -> argparse.ArgumentParser:
"--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)",
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(
"--dropout",