nit

fix_torch.py

@@ -5,20 +5,24 @@ import ctypes
 import logging
 
 
-torch_spec = importlib.util.find_spec("torch")
+def fix_pytorch_libomp():
-for folder in torch_spec.submodule_search_locations:
+    """
-    lib_folder = os.path.join(folder, "lib")
+    Fix PyTorch libomp DLL issue on Windows by copying the correct DLL file if needed.
-    test_file = os.path.join(lib_folder, "fbgemm.dll")
+    """
-    dest = os.path.join(lib_folder, "libomp140.x86_64.dll")
+    torch_spec = importlib.util.find_spec("torch")
-    if os.path.exists(dest):
+    for folder in torch_spec.submodule_search_locations:
-        break
+        lib_folder = os.path.join(folder, "lib")
-
+        test_file = os.path.join(lib_folder, "fbgemm.dll")
-    with open(test_file, 'rb') as f:
+        dest = os.path.join(lib_folder, "libomp140.x86_64.dll")
-        contents = f.read()
+        if os.path.exists(dest):
-        if b"libomp140.x86_64.dll" not in contents:
             break
-    try:
+
-        mydll = ctypes.cdll.LoadLibrary(test_file)
+        with open(test_file, "rb") as f:
-    except FileNotFoundError as e:
+            contents = f.read()
-        logging.warning("Detected pytorch version with libomp issue, patching.")
+            if b"libomp140.x86_64.dll" not in contents:
-        shutil.copyfile(os.path.join(lib_folder, "libiomp5md.dll"), dest)
+                break
+        try:
+            mydll = ctypes.cdll.LoadLibrary(test_file)
+        except FileNotFoundError as e:
+            logging.warning("Detected pytorch version with libomp issue, patching.")
+            shutil.copyfile(os.path.join(lib_folder, "libiomp5md.dll"), dest)

main.py

@@ -86,9 +86,9 @@ if __name__ == "__main__":
     import cuda_malloc
 
 if args.windows_standalone_build:
-    # TODO: Convert fix_torch to a function.
     try:
-        import fix_torch # noqa: F401
+        from fix_torch import fix_pytorch_libomp
+        fix_pytorch_libomp()
     except:
         pass