91 lines
4.2 KiB
Python
91 lines
4.2 KiB
Python
import time
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import copy
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import torch
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import comfy.model_management
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import os
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import importlib.util
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import logging
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def preload_module_classes(module_path, target_classes):
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try:
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full_path = os.path.join("custom_nodes", module_path, "__init__.py")
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logging.info(f"MultiGPU: Attempting to preload {module_path}")
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if not os.path.exists(full_path):
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logging.info(f"MultiGPU: Module path {module_path} not found")
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return [None] * len(target_classes)
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spec = importlib.util.spec_from_file_location(module_path, full_path)
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module = importlib.util.module_from_spec(spec)
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spec.loader.exec_module(module)
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logging.info(f"MultiGPU: Successfully loaded {module_path}")
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return [getattr(module, class_name) for class_name in target_classes]
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except Exception as e:
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logging.info(f"MultiGPU: Failed to preload {module_path}: {e}")
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return [None] * len(target_classes)
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logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
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current_device = comfy.model_management.get_torch_device()
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def get_torch_device_patched():
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if (
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not torch.cuda.is_available()
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or comfy.model_management.cpu_state == comfy.model_management.CPUState.CPU
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or "cpu" in str(current_device).lower()
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):
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return torch.device("cpu")
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return torch.device(current_device)
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comfy.model_management.get_torch_device = get_torch_device_patched
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def override_class(cls):
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class NodeOverride(cls):
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@classmethod
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def INPUT_TYPES(s):
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inputs = copy.deepcopy(cls.INPUT_TYPES())
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devices = ["cpu"] + [f"cuda:{i}" for i in range(torch.cuda.device_count())]
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inputs["required"]["device"] = (devices,)
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return inputs
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CATEGORY = "multigpu"
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FUNCTION = "override"
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def override(self, *args, device, **kwargs):
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global current_device
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current_device = device
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fn = getattr(super(), cls.FUNCTION)
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return fn(*args, **kwargs)
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return NodeOverride
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# Try to preload NF4 classes
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CheckpointLoaderNF4, UNETLoaderNF4 = preload_module_classes(
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"ComfyUI_bnb_nf4_fp4_Loaders",
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["CheckpointLoaderNF4", "UNETLoaderNF4"]
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)
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# Try to preload NF4 classes
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logging.info("MultiGPU: Starting NF4 preload")
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CheckpointLoaderNF4, UNETLoaderNF4 = preload_module_classes(
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"ComfyUI_bnb_nf4_fp4_Loaders",
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["CheckpointLoaderNF4", "UNETLoaderNF4"]
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)
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logging.info(f"MultiGPU: NF4 preload complete - Checkpoint: {'Found' if CheckpointLoaderNF4 else 'Not Found'}, UNET: {'Found' if UNETLoaderNF4 else 'Not Found'}")
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time.sleep(20) # This is to make sure the other nodes are already loaded
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from nodes import NODE_CLASS_MAPPINGS as GLOBAL_NODE_CLASS_MAPPINGS
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TARGET_NODE_NAMES = {
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"UNETLoader", "VAELoader", "CLIPLoader", "DualCLIPLoader", "TripleCLIPLoader", "CheckpointLoaderSimple", "ControlNetLoader", # ComfyUI Core Nodes - https://github.com/comfyanonymous/ComfyUI
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"UnetLoaderGGUF", "UnetLoaderGGUFAdvanced", "CLIPLoaderGGUF", "DualCLIPLoaderGGUF", "TripleCLIPLoaderGGUF", # ComfyUI-GGUF - https://github.com/city96/ComfyUI-GGUF
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"LoadFluxControlNet", # x-flux-comfyui - https://github.com/XLabs-AI/x-flux-comfyui
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"Florence2ModelLoader", "DownloadAndLoadFlorence2Model", # ComfyUI-Florence2 - https://github.com/kijai/ComfyUI-Florence2
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"LTXVLoader", # ComfyUI-LTXVideo - https://github.com/Lightricks/ComfyUI-LTXVideo
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"MMAudioFeatureUtilsLoader", "MMAudioModelLoader", "MMAudioSampler", # ComfyUI-MMAudio - https://github.com/kijai/ComfyUI-MMAudio --EXPERIMENTAL--
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"CheckpointLoaderNF4",
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}
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NODE_CLASS_MAPPINGS = {}
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for name in TARGET_NODE_NAMES:
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if name not in GLOBAL_NODE_CLASS_MAPPINGS:
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continue
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NODE_CLASS_MAPPINGS[f"{name}MultiGPU"] = override_class(GLOBAL_NODE_CLASS_MAPPINGS[name]) |