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29 lines
946 B
Python
29 lines
946 B
Python
import importlib.util
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import shutil
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import os
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import ctypes
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import logging
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def fix_pytorch_libomp():
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"""
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Fix PyTorch libomp DLL issue on Windows by copying the correct DLL file if needed.
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"""
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torch_spec = importlib.util.find_spec("torch")
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for folder in torch_spec.submodule_search_locations:
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lib_folder = os.path.join(folder, "lib")
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test_file = os.path.join(lib_folder, "fbgemm.dll")
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dest = os.path.join(lib_folder, "libomp140.x86_64.dll")
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if os.path.exists(dest):
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break
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with open(test_file, "rb") as f:
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contents = f.read()
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if b"libomp140.x86_64.dll" not in contents:
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break
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try:
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ctypes.cdll.LoadLibrary(test_file)
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except FileNotFoundError:
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logging.warning("Detected pytorch version with libomp issue, patching.")
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shutil.copyfile(os.path.join(lib_folder, "libiomp5md.dll"), dest)
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