__init__.py 文件源码

def _load_cudart():
    system = platform.system()
    lib_name = 'libcudart.' + ('dylib' if system == 'Darwin' else 'so')
    lib_paths = [
        lib_name,
        os.path.join(torch._C._cuda_getLibPath(), lib_name),
        os.path.join('/usr/local/cuda/lib64', lib_name),
        os.path.join('/usr/local/cuda/lib', lib_name),
    ]
    for path in lib_paths:
        try:
            return ctypes.cdll.LoadLibrary(path)
        except OSError:
            pass
    raise RuntimeError("couldn't find libcudart. Make sure CUDA libraries "
        "are installed in a default location, or that they're in " +
        ("DYLD_LIBRARY_PATH" if system == 'Darwin' else "LD_LIBRARY_PATH") +
        ".")