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add checkpoint cache option to UI for faster model switching

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switching time reduced from ~1500ms to ~280ms
This commit is contained in:
Rae Fu 2022-10-13 23:00:38 -06:00
parent 494afccbc1
commit e21f01f645
2 changed files with 33 additions and 22 deletions
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14
modules/sd_models.py
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@ -1,4 +1,4 @@
import glob
import collections
import os.path
import sys
from collections import namedtuple
@ -15,6 +15,7 @@ model_path = os.path.abspath(os.path.join(models_path, model_dir))
CheckpointInfo = namedtuple("CheckpointInfo", ['filename', 'title', 'hash', 'model_name', 'config'])
checkpoints_list = {}
checkpoints_loaded = collections.OrderedDict()
try:
# this silences the annoying "Some weights of the model checkpoint were not used when initializing..." message at start.
@ -132,6 +133,7 @@ def load_model_weights(model, checkpoint_info):
checkpoint_file = checkpoint_info.filename
sd_model_hash = checkpoint_info.hash
if checkpoint_info not in checkpoints_loaded:
print(f"Loading weights [{sd_model_hash}] from {checkpoint_file}")
pl_sd = torch.load(checkpoint_file, map_location="cpu")
@ -139,7 +141,6 @@ def load_model_weights(model, checkpoint_info):
print(f"Global Step: {pl_sd['global_step']}")
sd = get_state_dict_from_checkpoint(pl_sd)
model.load_state_dict(sd, strict=False)
if shared.cmd_opts.opt_channelslast:
@ -165,6 +166,14 @@ def load_model_weights(model, checkpoint_info):
model.first_stage_model.to(devices.dtype_vae)
checkpoints_loaded[checkpoint_info] = model.state_dict().copy()
while len(checkpoints_loaded) > shared.opts.sd_checkpoint_cache:
checkpoints_loaded.popitem(last=False) # LRU
else:
print(f"Loading weights [{sd_model_hash}] from cache")
checkpoints_loaded.move_to_end(checkpoint_info)
model.load_state_dict(checkpoints_loaded[checkpoint_info])
model.sd_model_hash = sd_model_hash
model.sd_model_checkpoint = checkpoint_file
model.sd_checkpoint_info = checkpoint_info
@ -202,6 +211,7 @@ def reload_model_weights(sd_model, info=None):
return
if sd_model.sd_checkpoint_info.config != checkpoint_info.config:
checkpoints_loaded.clear()
shared.sd_model = load_model()
return shared.sd_model

1
modules/shared.py
View File

@ -238,6 +238,7 @@ options_templates.update(options_section(('training', "Training"), {
options_templates.update(options_section(('sd', "Stable Diffusion"), {
"sd_model_checkpoint": OptionInfo(None, "Stable Diffusion checkpoint", gr.Dropdown, lambda: {"choices": modules.sd_models.checkpoint_tiles()}, refresh=sd_models.list_models),
"sd_checkpoint_cache": OptionInfo(0, "Checkpoints to cache in RAM", gr.Slider, {"minimum": 0, "maximum": 10, "step": 1}),
"sd_hypernetwork": OptionInfo("None", "Hypernetwork", gr.Dropdown, lambda: {"choices": ["None"] + [x for x in hypernetworks.keys()]}, refresh=reload_hypernetworks),
"sd_hypernetwork_strength": OptionInfo(1.0, "Hypernetwork strength", gr.Slider, {"minimum": 0.0, "maximum": 1.0, "step": 0.001}),
"img2img_color_correction": OptionInfo(False, "Apply color correction to img2img results to match original colors."),