Source code for pytorch_lightning.accelerators.ipu
# 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
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from typing import Any, Dict, Union
import torch
import pytorch_lightning as pl
from pytorch_lightning.accelerators.accelerator import Accelerator
from pytorch_lightning.utilities.exceptions import MisconfigurationException
[docs]class IPUAccelerator(Accelerator):
"""Accelerator for IPUs."""
[docs] def setup_optimizers(self, trainer: "pl.Trainer") -> None:
"""
Raises:
MisconfigurationException:
If multiple optimizers are provided.
"""
super().setup_optimizers(trainer)
if len(self.optimizers) > 1:
raise MisconfigurationException("IPUs currently only support one optimizer.")
[docs] def get_device_stats(self, device: Union[str, torch.device]) -> Dict[str, Any]:
"""IPU device stats aren't supported yet."""
return {}
[docs] @staticmethod
def auto_device_count() -> int:
"""Get the devices when set to auto."""
# TODO (@kaushikb11): 4 is the minimal unit they are shipped in.
# Update this when api is exposed by the Graphcore team.
return 4