29 lines
1022 B
Python
29 lines
1022 B
Python
# Copyright The PyTorch Lightning team.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import torch
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from pytorch_lightning.plugins.precision.precision_plugin import PrecisionPlugin
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class TPUHalfPrecisionPlugin(PrecisionPlugin):
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"""Plugin that enables bfloats on TPUs"""
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precision = 16
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def connect(self, model: torch.nn.Module, optimizers, lr_schedulers):
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os.environ["XLA_USE_BF16"] = str(1)
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return super().connect(model=model, optimizers=optimizers, lr_schedulers=lr_schedulers)
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