35 lines
1.3 KiB
Python
35 lines
1.3 KiB
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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from typing import Any, Callable
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from torch.optim import Optimizer
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import pytorch_lightning as pl
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from pytorch_lightning.accelerators.accelerator import Accelerator
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from pytorch_lightning.utilities.exceptions import MisconfigurationException
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class IPUAccelerator(Accelerator):
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"""Accelerator for IPUs."""
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def setup_optimizers(self, trainer: "pl.Trainer") -> None:
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super().setup_optimizers(trainer)
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if len(self.optimizers) > 1:
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raise MisconfigurationException("IPUs currently only support one optimizer.")
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def optimizer_step(self, optimizer: Optimizer, opt_idx: int, lambda_closure: Callable, **kwargs: Any) -> None:
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# Optimizer step is handled by the IPU accelerator.
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lambda_closure()
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