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Save Optimizer next to TI embedding

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Also add check to load only .PT and .BIN files as embeddings. (since we add .optim files in the same directory)
This commit is contained in:
Shondoit
2023-01-03 10:26:37 +01:00
parent c0ee148870
commit bddebe09ed
2 changed files with 33 additions and 9 deletions
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40
modules/textual_inversion/textual_inversion.py
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@@ -28,6 +28,7 @@ class Embedding:
self.cached_checksum = None
self.sd_checkpoint = None
self.sd_checkpoint_name = None
self.optimizer_state_dict = None
def save(self, filename):
embedding_data = {
@@ -41,6 +42,13 @@ class Embedding:
torch.save(embedding_data, filename)
if shared.opts.save_optimizer_state and self.optimizer_state_dict is not None:
optimizer_saved_dict = {
'hash': self.checksum(),
'optimizer_state_dict': self.optimizer_state_dict,
}
torch.save(optimizer_saved_dict, filename + '.optim')
def checksum(self):
if self.cached_checksum is not None:
return self.cached_checksum
@@ -95,9 +103,10 @@ class EmbeddingDatabase:
self.expected_shape = self.get_expected_shape()
def process_file(path, filename):
name = os.path.splitext(filename)[0]
name, ext = os.path.splitext(filename)
ext = ext.upper()
if os.path.splitext(filename.upper())[-1] in ['.PNG', '.WEBP', '.JXL', '.AVIF']:
if ext in ['.PNG', '.WEBP', '.JXL', '.AVIF']:
embed_image = Image.open(path)
if hasattr(embed_image, 'text') and 'sd-ti-embedding' in embed_image.text:
data = embedding_from_b64(embed_image.text['sd-ti-embedding'])
@@ -105,8 +114,10 @@ class EmbeddingDatabase:
else:
data = extract_image_data_embed(embed_image)
name = data.get('name', name)
else:
elif ext in ['.BIN', '.PT']:
data = torch.load(path, map_location="cpu")
else:
return
# textual inversion embeddings
if 'string_to_param' in data:
@@ -300,6 +311,20 @@ def train_embedding(embedding_name, learn_rate, batch_size, gradient_step, data_
embedding.vec.requires_grad = True
optimizer = torch.optim.AdamW([embedding.vec], lr=scheduler.learn_rate, weight_decay=0.0)
if shared.opts.save_optimizer_state:
optimizer_state_dict = None
if os.path.exists(filename + '.optim'):
optimizer_saved_dict = torch.load(filename + '.optim', map_location='cpu')
if embedding.checksum() == optimizer_saved_dict.get('hash', None):
optimizer_state_dict = optimizer_saved_dict.get('optimizer_state_dict', None)
if optimizer_state_dict is not None:
optimizer.load_state_dict(optimizer_state_dict)
print("Loaded existing optimizer from checkpoint")
else:
print("No saved optimizer exists in checkpoint")
scaler = torch.cuda.amp.GradScaler()
batch_size = ds.batch_size
@@ -366,9 +391,7 @@ def train_embedding(embedding_name, learn_rate, batch_size, gradient_step, data_
# Before saving, change name to match current checkpoint.
embedding_name_every = f'{embedding_name}-{steps_done}'
last_saved_file = os.path.join(embedding_dir, f'{embedding_name_every}.pt')
#if shared.opts.save_optimizer_state:
#embedding.optimizer_state_dict = optimizer.state_dict()
save_embedding(embedding, checkpoint, embedding_name_every, last_saved_file, remove_cached_checksum=True)
save_embedding(embedding, optimizer, checkpoint, embedding_name_every, last_saved_file, remove_cached_checksum=True)
embedding_yet_to_be_embedded = True
write_loss(log_directory, "textual_inversion_loss.csv", embedding.step, steps_per_epoch, {
@@ -458,7 +481,7 @@ Last saved image: {html.escape(last_saved_image)}<br/>
</p>
"""
filename = os.path.join(shared.cmd_opts.embeddings_dir, f'{embedding_name}.pt')
save_embedding(embedding, checkpoint, embedding_name, filename, remove_cached_checksum=True)
save_embedding(embedding, optimizer, checkpoint, embedding_name, filename, remove_cached_checksum=True)
except Exception:
print(traceback.format_exc(), file=sys.stderr)
pass
@@ -470,7 +493,7 @@ Last saved image: {html.escape(last_saved_image)}<br/>
return embedding, filename
def save_embedding(embedding, checkpoint, embedding_name, filename, remove_cached_checksum=True):
def save_embedding(embedding, optimizer, checkpoint, embedding_name, filename, remove_cached_checksum=True):
old_embedding_name = embedding.name
old_sd_checkpoint = embedding.sd_checkpoint if hasattr(embedding, "sd_checkpoint") else None
old_sd_checkpoint_name = embedding.sd_checkpoint_name if hasattr(embedding, "sd_checkpoint_name") else None
@@ -481,6 +504,7 @@ def save_embedding(embedding, checkpoint, embedding_name, filename, remove_cache
if remove_cached_checksum:
embedding.cached_checksum = None
embedding.name = embedding_name
embedding.optimizer_state_dict = optimizer.state_dict()
embedding.save(filename)
except:
embedding.sd_checkpoint = old_sd_checkpoint