36 lines
1.2 KiB
Python
36 lines
1.2 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.
|
|
from typing import Any
|
|
|
|
from pytorch_lightning.overrides.torch_distributed import broadcast_object_list
|
|
from pytorch_lightning.utilities.distributed import group as _group
|
|
|
|
|
|
class LightningDistributed:
|
|
|
|
def __init__(self, rank=None, device=None):
|
|
self.rank = rank
|
|
self.device = device
|
|
|
|
def broadcast(self, obj: Any, group=_group.WORLD):
|
|
# always wrap into a list so list can be brodcasted.
|
|
obj = [obj]
|
|
|
|
if self.rank != 0:
|
|
obj = [None] * len(obj)
|
|
|
|
broadcast_object_list(obj, 0, group=group or _group.WORLD)
|
|
|
|
return obj[0]
|