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| # Force model to always use specified device | |
| # Place in `ComfyUI\custom_nodes` to use | |
| # City96 [Apache2] | |
| # | |
| import types | |
| import torch | |
| import comfy.model_management | |
| class OverrideDevice: | |
| @classmethod | |
| def INPUT_TYPES(s): | |
| devices = ["cpu",] | |
| for k in range(0, torch.cuda.device_count()): | |
| devices.append(f"cuda:{k}") | |
| return { | |
| "required": { | |
| "device": (devices, {"default":"cpu"}), | |
| } | |
| } | |
| FUNCTION = "patch" | |
| CATEGORY = "other" | |
| def override(self, model, model_attr, device): | |
| # set model/patcher attributes | |
| model.device = device | |
| patcher = getattr(model, "patcher", model) #.clone() | |
| for name in ["device", "load_device", "offload_device", "current_device", "output_device"]: | |
| setattr(patcher, name, device) | |
| # move model to device | |
| py_model = getattr(model, model_attr) | |
| py_model.to = types.MethodType(torch.nn.Module.to, py_model) | |
| py_model.to(device) | |
| # remove ability to move model | |
| def to(*args, **kwargs): | |
| pass | |
| py_model.to = types.MethodType(to, py_model) | |
| return (model,) | |
| def patch(self, *args, **kwargs): | |
| raise NotImplementedError | |
| class OverrideCLIPDevice(OverrideDevice): | |
| @classmethod | |
| def INPUT_TYPES(s): | |
| k = super().INPUT_TYPES() | |
| k["required"]["clip"] = ("CLIP",) | |
| return k | |
| RETURN_TYPES = ("CLIP",) | |
| TITLE = "Force/Set CLIP Device" | |
| def patch(self, clip, device): | |
| return self.override(clip, "cond_stage_model", torch.device(device)) | |
| class OverrideVAEDevice(OverrideDevice): | |
| @classmethod | |
| def INPUT_TYPES(s): | |
| k = super().INPUT_TYPES() | |
| k["required"]["vae"] = ("VAE",) | |
| return k | |
| RETURN_TYPES = ("VAE",) | |
| TITLE = "Force/Set VAE Device" | |
| def patch(self, vae, device): | |
| return self.override(vae, "first_stage_model", torch.device(device)) | |
| NODE_CLASS_MAPPINGS = { | |
| "OverrideCLIPDevice": OverrideCLIPDevice, | |
| "OverrideVAEDevice": OverrideVAEDevice, | |
| } | |
| NODE_DISPLAY_NAME_MAPPINGS = {k:v.TITLE for k,v in NODE_CLASS_MAPPINGS.items()} |
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