56 lines
2.1 KiB
Python
56 lines
2.1 KiB
Python
# Copyright The PyTorch Lightning team.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
"""General utilities"""
|
|
import importlib
|
|
import platform
|
|
from distutils.version import LooseVersion
|
|
|
|
import torch
|
|
|
|
|
|
def _module_available(module_path: str) -> bool:
|
|
"""Testing if given module is avalaible in your env
|
|
|
|
>>> _module_available('os')
|
|
True
|
|
>>> _module_available('bla.bla')
|
|
False
|
|
"""
|
|
# todo: find a better way than try / except
|
|
try:
|
|
mods = module_path.split('.')
|
|
assert mods, 'nothing given to test'
|
|
# it has to be tested as per partets
|
|
for i in range(len(mods)):
|
|
module_path = '.'.join(mods[:i + 1])
|
|
if importlib.util.find_spec(module_path) is None:
|
|
return False
|
|
return True
|
|
except AttributeError:
|
|
return False
|
|
|
|
|
|
_APEX_AVAILABLE = _module_available("apex.amp")
|
|
_NATIVE_AMP_AVAILABLE = _module_available("torch.cuda.amp") and hasattr(torch.cuda.amp, "autocast")
|
|
_OMEGACONF_AVAILABLE = _module_available("omegaconf")
|
|
_HYDRA_AVAILABLE = _module_available("hydra")
|
|
_HOROVOD_AVAILABLE = _module_available("horovod.torch")
|
|
_TORCHTEXT_AVAILABLE = _module_available("torchtext")
|
|
_XLA_AVAILABLE = _module_available("torch_xla")
|
|
_FAIRSCALE_AVAILABLE = platform.system() != 'Windows' and _module_available('fairscale.nn.data_parallel')
|
|
_RPC_AVAILABLE = platform.system() != 'Windows' and _module_available('torch.distributed.rpc')
|
|
_GROUP_AVAILABLE = platform.system() != 'Windows' and _module_available('torch.distributed.group')
|
|
_FAIRSCALE_PIPE_AVAILABLE = _FAIRSCALE_AVAILABLE and LooseVersion(torch.__version__) >= LooseVersion("1.6.0")
|
|
_BOLTS_AVAILABLE = _module_available('pl_bolts')
|