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https://github.com/zebrajr/pytorch.git
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173f224570
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/18598 ghimport-source-id: c74597e5e7437e94a43c163cee0639b20d0d0c6a Stack from [ghstack](https://github.com/ezyang/ghstack): * **#18598 Turn on F401: Unused import warning.** This was requested by someone at Facebook; this lint is turned on for Facebook by default. "Sure, why not." I had to noqa a number of imports in __init__. Hypothetically we're supposed to use __all__ in this case, but I was too lazy to fix it. Left for future work. Be careful! flake8-2 and flake8-3 behave differently with respect to import resolution for # type: comments. flake8-3 will report an import unused; flake8-2 will not. For now, I just noqa'd all these sites. All the changes were done by hand. Signed-off-by: Edward Z. Yang <ezyang@fb.com> Differential Revision: D14687478 fbshipit-source-id: 30d532381e914091aadfa0d2a5a89404819663e3
77 lines
2.7 KiB
Python
77 lines
2.7 KiB
Python
import os
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import glob
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from .env import IS_WINDOWS, IS_DARWIN, IS_CONDA, CONDA_DIR, check_negative_env_flag, \
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gather_paths
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from .cuda import USE_CUDA, CUDA_HOME
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USE_NCCL = USE_CUDA and not check_negative_env_flag('USE_NCCL') and not IS_DARWIN and not IS_WINDOWS
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USE_SYSTEM_NCCL = False
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NCCL_LIB_DIR = None
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NCCL_SYSTEM_LIB = None
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NCCL_INCLUDE_DIR = None
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NCCL_ROOT_DIR = None
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USE_STATIC_NCCL = os.getenv("USE_STATIC_NCCL")
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LIBNCCL_PREFIX = "libnccl"
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if USE_STATIC_NCCL is not None:
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LIBNCCL_PREFIX = "libnccl_static"
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if USE_CUDA and not check_negative_env_flag('USE_SYSTEM_NCCL'):
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ENV_ROOT = os.getenv('NCCL_ROOT_DIR', None)
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LIB_DIR = os.getenv('NCCL_LIB_DIR', None)
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INCLUDE_DIR = os.getenv('NCCL_INCLUDE_DIR', None)
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lib_paths = list(filter(bool, [
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LIB_DIR,
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ENV_ROOT,
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os.path.join(ENV_ROOT, 'lib') if ENV_ROOT is not None else None,
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os.path.join(ENV_ROOT, 'lib', 'x86_64-linux-gnu') if ENV_ROOT is not None else None,
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os.path.join(ENV_ROOT, 'lib64') if ENV_ROOT is not None else None,
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os.path.join(CUDA_HOME, 'lib'),
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os.path.join(CUDA_HOME, 'lib64'),
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'/usr/local/lib',
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'/usr/lib/x86_64-linux-gnu/',
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'/usr/lib/powerpc64le-linux-gnu/',
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'/usr/lib/aarch64-linux-gnu/',
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'/usr/lib',
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] + gather_paths([
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'LIBRARY_PATH',
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]) + gather_paths([
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'LD_LIBRARY_PATH',
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])))
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include_paths = list(filter(bool, [
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INCLUDE_DIR,
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ENV_ROOT,
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os.path.join(ENV_ROOT, 'include') if ENV_ROOT is not None else None,
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os.path.join(CUDA_HOME, 'include'),
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'/usr/local/include',
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'/usr/include',
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]))
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if IS_CONDA:
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lib_paths.append(os.path.join(CONDA_DIR, 'lib'))
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for path in lib_paths:
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path = os.path.expanduser(path)
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if path is None or not os.path.exists(path):
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continue
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if glob.glob(os.path.join(path, LIBNCCL_PREFIX + '*')):
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NCCL_LIB_DIR = path
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# try to find an exact versioned .so/.dylib, rather than libnccl.so
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preferred_path = glob.glob(os.path.join(path, LIBNCCL_PREFIX + '*[0-9]*'))
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if len(preferred_path) == 0:
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NCCL_SYSTEM_LIB = glob.glob(os.path.join(path, LIBNCCL_PREFIX + '*'))[0]
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else:
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NCCL_SYSTEM_LIB = os.path.realpath(preferred_path[0])
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break
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for path in include_paths:
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path = os.path.expanduser(path)
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if path is None or not os.path.exists(path):
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continue
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if glob.glob(os.path.join(path, 'nccl.h')):
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NCCL_INCLUDE_DIR = path
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break
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if NCCL_LIB_DIR is not None and NCCL_INCLUDE_DIR is not None:
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USE_SYSTEM_NCCL = True
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NCCL_ROOT_DIR = os.path.commonprefix((NCCL_LIB_DIR, NCCL_INCLUDE_DIR))
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