| import os |
| import sys |
| import warnings |
|
|
|
|
| try: |
| from caffe2.proto import caffe2_pb2 |
| except ImportError: |
| warnings.warn('Caffe2 support is not enabled in this PyTorch build. ' |
| 'Please enable Caffe2 by building PyTorch from source with `BUILD_CAFFE2=1` flag.') |
| raise |
|
|
| |
| caffe2_pb2.CPU = caffe2_pb2.PROTO_CPU |
| caffe2_pb2.CUDA = caffe2_pb2.PROTO_CUDA |
| caffe2_pb2.MKLDNN = caffe2_pb2.PROTO_MKLDNN |
| caffe2_pb2.OPENGL = caffe2_pb2.PROTO_OPENGL |
| caffe2_pb2.OPENCL = caffe2_pb2.PROTO_OPENCL |
| caffe2_pb2.IDEEP = caffe2_pb2.PROTO_IDEEP |
| caffe2_pb2.HIP = caffe2_pb2.PROTO_HIP |
| caffe2_pb2.COMPILE_TIME_MAX_DEVICE_TYPES = caffe2_pb2.PROTO_COMPILE_TIME_MAX_DEVICE_TYPES |
|
|
| if sys.platform == "win32": |
| is_conda = os.path.exists(os.path.join(sys.prefix, 'conda-meta')) |
| py_dll_path = os.path.join(os.path.dirname(sys.executable), 'Library', 'bin') |
| th_root = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), 'torch') |
| th_dll_path = os.path.join(th_root, 'lib') |
|
|
| if not os.path.exists(os.path.join(th_dll_path, 'nvToolsExt64_1.dll')) and \ |
| not os.path.exists(os.path.join(py_dll_path, 'nvToolsExt64_1.dll')): |
| nvtoolsext_dll_path = os.path.join( |
| os.getenv('NVTOOLSEXT_PATH', 'C:\\Program Files\\NVIDIA Corporation\\NvToolsExt'), 'bin', 'x64') |
| else: |
| nvtoolsext_dll_path = '' |
|
|
| import importlib.util |
| import glob |
| spec = importlib.util.spec_from_file_location('torch_version', os.path.join(th_root, 'version.py')) |
| torch_version = importlib.util.module_from_spec(spec) |
| spec.loader.exec_module(torch_version) |
| if torch_version.cuda and len(glob.glob(os.path.join(th_dll_path, 'cudart64*.dll'))) == 0 and \ |
| len(glob.glob(os.path.join(py_dll_path, 'cudart64*.dll'))) == 0: |
| cuda_version = torch_version.cuda |
| cuda_version_1 = cuda_version.replace('.', '_') |
| cuda_path_var = 'CUDA_PATH_V' + cuda_version_1 |
| default_path = 'C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v' + cuda_version |
| cuda_path = os.path.join(os.getenv(cuda_path_var, default_path), 'bin') |
| else: |
| cuda_path = '' |
|
|
| import ctypes |
| kernel32 = ctypes.WinDLL('kernel32.dll', use_last_error=True) |
| dll_paths = list(filter(os.path.exists, [th_dll_path, py_dll_path, nvtoolsext_dll_path, cuda_path])) |
| with_load_library_flags = hasattr(kernel32, 'AddDllDirectory') |
| prev_error_mode = kernel32.SetErrorMode(0x0001) |
|
|
| kernel32.LoadLibraryW.restype = ctypes.c_void_p |
| if with_load_library_flags: |
| kernel32.AddDllDirectory.restype = ctypes.c_void_p |
| kernel32.LoadLibraryExW.restype = ctypes.c_void_p |
|
|
| for dll_path in dll_paths: |
| if sys.version_info >= (3, 8): |
| os.add_dll_directory(dll_path) |
| elif with_load_library_flags: |
| res = kernel32.AddDllDirectory(dll_path) |
| if res is None: |
| err = ctypes.WinError(ctypes.get_last_error()) |
| err.strerror += ' Error adding "{}" to the DLL directories.'.format(dll_path) |
| raise err |
|
|
| dlls = glob.glob(os.path.join(th_dll_path, '*.dll')) |
| path_patched = False |
| for dll in dlls: |
| is_loaded = False |
| if with_load_library_flags: |
| res = kernel32.LoadLibraryExW(dll, None, 0x00001100) |
| last_error = ctypes.get_last_error() |
| if res is None and last_error != 126: |
| err = ctypes.WinError(last_error) |
| err.strerror += ' Error loading "{}" or one of its dependencies.'.format(dll) |
| raise err |
| elif res is not None: |
| is_loaded = True |
| if not is_loaded: |
| if not path_patched: |
| os.environ['PATH'] = ';'.join(dll_paths + [os.environ['PATH']]) |
| path_patched = True |
| res = kernel32.LoadLibraryW(dll) |
| if res is None: |
| err = ctypes.WinError(ctypes.get_last_error()) |
| err.strerror += ' Error loading "{}" or one of its dependencies.'.format(dll) |
| raise err |
|
|
| kernel32.SetErrorMode(prev_error_mode) |
|
|
