69 lines
2.5 KiB
Python
69 lines
2.5 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.
|
|
import re
|
|
|
|
import pytest
|
|
import torch
|
|
|
|
from pytorch_lightning import Trainer
|
|
from pytorch_lightning.tuner.auto_gpu_select import pick_multiple_gpus
|
|
from pytorch_lightning.utilities.exceptions import MisconfigurationException
|
|
|
|
|
|
@pytest.mark.skipif(torch.cuda.device_count() < 2, reason="test requires a number of GPU machine greater than 1")
|
|
@pytest.mark.parametrize(
|
|
["auto_select_gpus", "gpus", "expected_error"],
|
|
[
|
|
(True, 0, MisconfigurationException),
|
|
(True, -1, None),
|
|
(False, 0, None),
|
|
(False, -1, None),
|
|
],
|
|
)
|
|
def test_trainer_with_gpus_options_combination_at_available_gpus_env(auto_select_gpus, gpus, expected_error):
|
|
if expected_error:
|
|
with pytest.raises(
|
|
expected_error,
|
|
match=re.escape(
|
|
r"auto_select_gpus=True, gpus=0 is not a valid configuration.\
|
|
Please select a valid number of GPU resources when using auto_select_gpus."
|
|
),
|
|
):
|
|
Trainer(auto_select_gpus=auto_select_gpus, gpus=gpus)
|
|
else:
|
|
Trainer(auto_select_gpus=auto_select_gpus, gpus=gpus)
|
|
|
|
|
|
@pytest.mark.skipif(torch.cuda.device_count() < 2, reason="test requires a number of GPU machine greater than 1")
|
|
@pytest.mark.parametrize(
|
|
["nb", "expected_gpu_idxs", "expected_error"],
|
|
[
|
|
(0, [], MisconfigurationException),
|
|
(-1, [i for i in range(torch.cuda.device_count())], None),
|
|
(1, [0], None),
|
|
],
|
|
)
|
|
def test_pick_multiple_gpus(nb, expected_gpu_idxs, expected_error):
|
|
if expected_error:
|
|
with pytest.raises(
|
|
expected_error,
|
|
match=re.escape(
|
|
r"auto_select_gpus=True, gpus=0 is not a valid configuration.\
|
|
Please select a valid number of GPU resources when using auto_select_gpus."
|
|
),
|
|
):
|
|
pick_multiple_gpus(nb)
|
|
else:
|
|
assert expected_gpu_idxs == pick_multiple_gpus(nb)
|