45 lines
1.5 KiB
Python
45 lines
1.5 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 __future__ import annotations
|
|
|
|
from typing import Any
|
|
|
|
import torch
|
|
|
|
from pytorch_lightning.accelerators.accelerator import Accelerator
|
|
from pytorch_lightning.utilities.exceptions import MisconfigurationException
|
|
from pytorch_lightning.utilities.types import _DEVICE
|
|
|
|
|
|
class CPUAccelerator(Accelerator):
|
|
"""Accelerator for CPU devices."""
|
|
|
|
def setup_environment(self, root_device: torch.device) -> None:
|
|
"""
|
|
Raises:
|
|
MisconfigurationException:
|
|
If the selected device is not CPU.
|
|
"""
|
|
if root_device.type != "cpu":
|
|
raise MisconfigurationException(f"Device should be CPU, got {root_device} instead.")
|
|
|
|
def get_device_stats(self, device: _DEVICE) -> dict[str, Any]:
|
|
"""CPU device stats aren't supported yet."""
|
|
return {}
|
|
|
|
@staticmethod
|
|
def auto_device_count() -> int:
|
|
"""Get the devices when set to auto."""
|
|
return 1
|