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Merge pull request #3503 from vladmandic/dev
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| Original file line number | Diff line number | Diff line change |
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@@ -123,6 +123,7 @@ | |
| "venv", | ||
| "panzoom.js", | ||
| "split.js", | ||
| "exifr.js" | ||
| "exifr.js", | ||
| "iframeResizer.min.js" | ||
| ] | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| import torch | ||
| import diffusers | ||
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| class StateDictStats(): | ||
| cls: str = None | ||
| device: torch.device = None | ||
| params: int = 0 | ||
| weights: dict = {} | ||
| dtypes: dict = {} | ||
| config: dict = None | ||
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| def __repr__(self): | ||
| return f'cls={self.cls} params={self.params} weights={self.weights} device={self.device} dtypes={self.dtypes} config={self.config is not None}' | ||
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| def set_module_tensor( | ||
| module: torch.nn.Module, | ||
| name: str, | ||
| value: torch.Tensor, | ||
| stats: StateDictStats, | ||
| device: torch.device = None, | ||
| dtype: torch.dtype = None, | ||
| ): | ||
| if "." in name: | ||
| splits = name.split(".") | ||
| for split in splits[:-1]: | ||
| module = getattr(module, split) | ||
| name = splits[-1] | ||
| old_value = getattr(module, name) | ||
| with torch.no_grad(): | ||
| if value.dtype not in stats.dtypes: | ||
| stats.dtypes[value.dtype] = 0 | ||
| stats.dtypes[value.dtype] += 1 | ||
| if name in module._buffers: # pylint: disable=protected-access | ||
| module._buffers[name] = value.to(device=device, dtype=dtype, non_blocking=True) # pylint: disable=protected-access | ||
| if 'buffers' not in stats.weights: | ||
| stats.weights['buffers'] = 0 | ||
| stats.weights['buffers'] += 1 | ||
| elif value is not None: | ||
| param_cls = type(module._parameters[name]) # pylint: disable=protected-access | ||
| module._parameters[name] = param_cls(value, requires_grad=old_value.requires_grad).to(device, dtype=dtype, non_blocking=True) # pylint: disable=protected-access | ||
| if 'parameters' not in stats.weights: | ||
| stats.weights['parameters'] = 0 | ||
| stats.weights['parameters'] += 1 | ||
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| def load_unet(config_file: str, state_dict: dict, device: torch.device = None, dtype: torch.dtype = None): | ||
| # same can be done for other modules or even for entire model by loading model config and then walking through its modules | ||
| from accelerate import init_empty_weights | ||
| with init_empty_weights(): | ||
| stats = StateDictStats() | ||
| stats.device = device | ||
| stats.config = diffusers.UNet2DConditionModel.load_config(config_file) | ||
| unet = diffusers.UNet2DConditionModel.from_config(stats.config) | ||
| stats.cls = unet.__class__.__name__ | ||
| expected_state_dict_keys = list(unet.state_dict().keys()) | ||
| stats.weights['expected'] = len(expected_state_dict_keys) | ||
| for param_name, param in state_dict.items(): | ||
| if param_name not in expected_state_dict_keys: | ||
| if 'unknown' not in stats.weights: | ||
| stats.weights['unknown'] = 0 | ||
| stats.weights['unknown'] += 1 | ||
| continue | ||
| set_module_tensor(unet, name=param_name, value=param, device=device, dtype=dtype, stats=stats) | ||
| state_dict[param_name] = None # unload as we initialize the model so we dont consume double the memory | ||
| stats.params = sum(p.numel() for p in unet.parameters(recurse=True)) | ||
| return unet, stats | ||
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| def load_safetensors(fn: str): | ||
| import safetensors.torch | ||
| state_dict = safetensors.torch.load_file(fn, device='cpu') # state dict should always be loaded to cpu | ||
| return state_dict | ||
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| if __name__ == "__main__": | ||
| # need pipe already present to load unet state_dict into or we could load unet first and then manually create pipe with params | ||
| pipe = diffusers.StableDiffusionXLPipeline.from_single_file('/mnt/models/stable-diffusion/sdxl/TempestV0.1-Artistic.safetensors', cache_dir='/mnt/models/huggingface') | ||
| # this could be kept in memory so we dont have to reload it | ||
| dct = load_safetensors('/mnt/models/UNET/dpo-sdxl-text2image.safetensors') | ||
| pipe.unet, s = load_unet( | ||
| config_file = 'configs/sdxl/unet/config.json', # can also point to online hf model with subfolder | ||
| state_dict = dct, | ||
| device = torch.device('cpu'), # can leave out to use default device | ||
| dtype = torch.bfloat16, # can leave out to use default dtype, especially for mixed precision modules | ||
| ) | ||
| from rich import print as rprint | ||
| rprint(f'Stats: {s}') |
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