From b235022c615a7384f73c05fe240d8f4a28d103d4 Mon Sep 17 00:00:00 2001 From: AUTOMATIC1111 <16777216c@gmail.com> Date: Tue, 1 Aug 2023 00:24:48 +0300 Subject: option to keep multiple models in memory --- modules/sd_models.py | 136 ++++++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 112 insertions(+), 24 deletions(-) (limited to 'modules/sd_models.py') diff --git a/modules/sd_models.py b/modules/sd_models.py index acb1e817..77195f2f 100644 --- a/modules/sd_models.py +++ b/modules/sd_models.py @@ -15,7 +15,6 @@ import ldm.modules.midas as midas from ldm.util import instantiate_from_config from modules import paths, shared, modelloader, devices, script_callbacks, sd_vae, sd_disable_initialization, errors, hashes, sd_models_config, sd_unet, sd_models_xl -from modules.sd_hijack_inpainting import do_inpainting_hijack from modules.timer import Timer import tomesd @@ -423,6 +422,7 @@ sdxl_refiner_clip_weight = 'conditioner.embedders.0.model.ln_final.weight' class SdModelData: def __init__(self): self.sd_model = None + self.loaded_sd_models = [] self.was_loaded_at_least_once = False self.lock = threading.Lock() @@ -437,6 +437,7 @@ class SdModelData: try: load_model() + except Exception as e: errors.display(e, "loading stable diffusion model", full_traceback=True) print("", file=sys.stderr) @@ -448,11 +449,24 @@ class SdModelData: def set_sd_model(self, v): self.sd_model = v + try: + self.loaded_sd_models.remove(v) + except ValueError: + pass + + if v is not None: + self.loaded_sd_models.insert(0, v) + model_data = SdModelData() def get_empty_cond(sd_model): + from modules import extra_networks, processing + + p = processing.StableDiffusionProcessingTxt2Img() + extra_networks.activate(p, {}) + if hasattr(sd_model, 'conditioner'): d = sd_model.get_learned_conditioning([""]) return d['crossattn'] @@ -460,19 +474,43 @@ def get_empty_cond(sd_model): return sd_model.cond_stage_model([""]) +def send_model_to_cpu(m): + from modules import lowvram + + if shared.cmd_opts.lowvram or shared.cmd_opts.medvram: + lowvram.send_everything_to_cpu() + else: + m.to(devices.cpu) + + devices.torch_gc() + + +def send_model_to_device(m): + from modules import lowvram + + if shared.cmd_opts.lowvram or shared.cmd_opts.medvram: + lowvram.setup_for_low_vram(m, shared.cmd_opts.medvram) + else: + m.to(shared.device) + + +def send_model_to_trash(m): + m.to(device="meta") + devices.torch_gc() + + def load_model(checkpoint_info=None, already_loaded_state_dict=None): - from modules import lowvram, sd_hijack + from modules import sd_hijack checkpoint_info = checkpoint_info or select_checkpoint() + timer = Timer() + if model_data.sd_model: - sd_hijack.model_hijack.undo_hijack(model_data.sd_model) + send_model_to_trash(model_data.sd_model) model_data.sd_model = None - gc.collect() devices.torch_gc() - do_inpainting_hijack() - - timer = Timer() + timer.record("unload existing model") if already_loaded_state_dict is not None: state_dict = already_loaded_state_dict @@ -512,12 +550,9 @@ def load_model(checkpoint_info=None, already_loaded_state_dict=None): with sd_disable_initialization.LoadStateDictOnMeta(state_dict, devices.cpu): load_model_weights(sd_model, checkpoint_info, state_dict, timer) + timer.record("load weights from state dict") - if shared.cmd_opts.lowvram or shared.cmd_opts.medvram: - lowvram.setup_for_low_vram(sd_model, shared.cmd_opts.medvram) - else: - sd_model.to(shared.device) - + send_model_to_device(sd_model) timer.record("move model to device") sd_hijack.model_hijack.hijack(sd_model) @@ -525,7 +560,7 @@ def load_model(checkpoint_info=None, already_loaded_state_dict=None): timer.record("hijack") sd_model.eval() - model_data.sd_model = sd_model + model_data.set_sd_model(sd_model) model_data.was_loaded_at_least_once = True sd_hijack.model_hijack.embedding_db.load_textual_inversion_embeddings(force_reload=True) # Reload embeddings after model load as they may or may not fit the model @@ -546,10 +581,61 @@ def load_model(checkpoint_info=None, already_loaded_state_dict=None): return sd_model +def reuse_model_from_already_loaded(sd_model, checkpoint_info, timer): + """ + Checks if the desired checkpoint from checkpoint_info is not already loaded in model_data.loaded_sd_models. + If it is loaded, returns that (moving it to GPU if necessary, and moving the currently loadded model to CPU if necessary). + If not, returns the model that can be used to load weights from checkpoint_info's file. + If no such model exists, returns None. + Additionaly deletes loaded models that are over the limit set in settings (sd_checkpoints_limit). + """ + + already_loaded = None + for i in reversed(range(len(model_data.loaded_sd_models))): + loaded_model = model_data.loaded_sd_models[i] + if loaded_model.sd_checkpoint_info.filename == checkpoint_info.filename: + already_loaded = loaded_model + continue + + if len(model_data.loaded_sd_models) > shared.opts.sd_checkpoints_limit > 0: + print(f"Unloading model {len(model_data.loaded_sd_models)} over the limit of {shared.opts.sd_checkpoints_limit}: {loaded_model.sd_checkpoint_info.title}") + model_data.loaded_sd_models.pop() + send_model_to_trash(loaded_model) + timer.record("send model to trash") + + if shared.opts.sd_checkpoints_keep_in_cpu: + send_model_to_cpu(sd_model) + timer.record("send model to cpu") + + if already_loaded is not None: + send_model_to_device(already_loaded) + timer.record("send model to device") + + model_data.set_sd_model(already_loaded) + print(f"Using already loaded model {already_loaded.sd_checkpoint_info.title}: done in {timer.summary()}") + return model_data.sd_model + elif shared.opts.sd_checkpoints_limit > 1 and len(model_data.loaded_sd_models) < shared.opts.sd_checkpoints_limit: + print(f"Loading model {checkpoint_info.title} ({len(model_data.loaded_sd_models) + 1} out of {shared.opts.sd_checkpoints_limit})") + + model_data.sd_model = None + load_model(checkpoint_info) + return model_data.sd_model + elif len(model_data.loaded_sd_models) > 0: + sd_model = model_data.loaded_sd_models.pop() + model_data.sd_model = sd_model + + print(f"Reusing loaded model {sd_model.sd_checkpoint_info.title} to load {checkpoint_info.title}") + return sd_model + else: + return None + + def reload_model_weights(sd_model=None, info=None): - from modules import lowvram, devices, sd_hijack + from modules import devices, sd_hijack checkpoint_info = info or select_checkpoint() + timer = Timer() + if not sd_model: sd_model = model_data.sd_model @@ -558,19 +644,17 @@ def reload_model_weights(sd_model=None, info=None): else: current_checkpoint_info = sd_model.sd_checkpoint_info if sd_model.sd_model_checkpoint == checkpoint_info.filename: - return - - sd_unet.apply_unet("None") + return sd_model - if shared.cmd_opts.lowvram or shared.cmd_opts.medvram: - lowvram.send_everything_to_cpu() - else: - sd_model.to(devices.cpu) + sd_model = reuse_model_from_already_loaded(sd_model, checkpoint_info, timer) + if sd_model is not None and sd_model.sd_checkpoint_info.filename == checkpoint_info.filename: + return sd_model + if sd_model is not None: + sd_unet.apply_unet("None") + send_model_to_cpu(sd_model) sd_hijack.model_hijack.undo_hijack(sd_model) - timer = Timer() - state_dict = get_checkpoint_state_dict(checkpoint_info, timer) checkpoint_config = sd_models_config.find_checkpoint_config(state_dict, checkpoint_info) @@ -578,7 +662,9 @@ def reload_model_weights(sd_model=None, info=None): timer.record("find config") if sd_model is None or checkpoint_config != sd_model.used_config: - del sd_model + if sd_model is not None: + send_model_to_trash(sd_model) + load_model(checkpoint_info, already_loaded_state_dict=state_dict) return model_data.sd_model @@ -601,6 +687,8 @@ def reload_model_weights(sd_model=None, info=None): print(f"Weights loaded in {timer.summary()}.") + model_data.set_sd_model(sd_model) + return sd_model -- cgit v1.2.1 From 390bffa81b747a7eb38ac7a0cd6dfb9fcc388151 Mon Sep 17 00:00:00 2001 From: AUTOMATIC1111 <16777216c@gmail.com> Date: Tue, 1 Aug 2023 17:13:15 +0300 Subject: repair merge error --- modules/sd_models.py | 1 - 1 file changed, 1 deletion(-) (limited to 'modules/sd_models.py') diff --git a/modules/sd_models.py b/modules/sd_models.py index 40a450df..3c451a4b 100644 --- a/modules/sd_models.py +++ b/modules/sd_models.py @@ -15,7 +15,6 @@ import ldm.modules.midas as midas from ldm.util import instantiate_from_config from modules import paths, shared, modelloader, devices, script_callbacks, sd_vae, sd_disable_initialization, errors, hashes, sd_models_config, sd_unet, sd_models_xl, cache -from modules.sd_hijack_inpainting import do_inpainting_hijack from modules.timer import Timer import tomesd -- cgit v1.2.1