Shortcuts

Source code for pytorch_lightning.plugins.precision.sharded_native_amp

# 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 Optional, Union

import torch

from pytorch_lightning.plugins.precision.native_amp import NativeMixedPrecisionPlugin
from pytorch_lightning.utilities import _FAIRSCALE_AVAILABLE
from pytorch_lightning.utilities.exceptions import MisconfigurationException

if _FAIRSCALE_AVAILABLE:
    from fairscale.optim import OSS
    from fairscale.optim.grad_scaler import ShardedGradScaler


[docs]class ShardedNativeMixedPrecisionPlugin(NativeMixedPrecisionPlugin): """Native AMP for Sharded Training.""" def __init__( self, precision: Union[str, int], device: str, scaler: Optional[torch.cuda.amp.GradScaler] = None ) -> None: if not _FAIRSCALE_AVAILABLE: raise MisconfigurationException( "You have asked for sharded AMP but you have not installed it." " Install `fairscale` using this guide: https://https://github.com/facebookresearch/fairscale" ) super().__init__(precision, device, scaler=scaler or ShardedGradScaler())
[docs] def clip_grad_by_norm(self, optimizer: "OSS", clip_val: Union[int, float]) -> None: optimizer.clip_grad_norm(clip_val)

© Copyright Copyright (c) 2018-2021, William Falcon et al... Revision 46f718d2.

Built with Sphinx using a theme provided by Read the Docs.
Read the Docs v: latest
Versions
latest
stable
1.5.4
1.5.3
1.5.2
1.5.1
1.5.0
1.4.9
1.4.8
1.4.7
1.4.6
1.4.5
1.4.4
1.4.3
1.4.2
1.4.1
1.4.0
1.3.8
1.3.7
1.3.6
1.3.5
1.3.4
1.3.3
1.3.2
1.3.1
1.3.0
1.2.10
1.2.8
1.2.7
1.2.6
1.2.5
1.2.4
1.2.3
1.2.2
1.2.1
1.2.0
1.1.8
1.1.7
1.1.6
1.1.5
1.1.4
1.1.3
1.1.2
1.1.1
1.1.0
1.0.8
1.0.7
1.0.6
1.0.5
1.0.4
1.0.3
1.0.2
1.0.1
1.0.0
0.10.0
0.9.0
0.8.5
0.8.4
0.8.3
0.8.2
0.8.1
0.8.0
0.7.6
0.7.5
0.7.4
0.7.3
0.7.2
0.7.1
0.7.0
0.6.0
0.5.3
0.4.9
ipynb-update
docs-search
Downloads
html
On Read the Docs
Project Home
Builds

Free document hosting provided by Read the Docs.