69 lines
2.3 KiB
Python
69 lines
2.3 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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import logging
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import os
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from unittest import mock
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import pytest
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from pytorch_lightning.plugins.environments import TorchElasticEnvironment
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@mock.patch.dict(os.environ, {})
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def test_default_attributes():
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"""Test the default attributes when no environment variables are set."""
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env = TorchElasticEnvironment()
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assert env.creates_children()
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assert env.master_address() == "127.0.0.1"
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assert env.master_port() == 12910
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assert env.world_size() is None
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with pytest.raises(KeyError):
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# local rank is required to be passed as env variable
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env.local_rank()
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assert env.node_rank() == 0
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@mock.patch.dict(
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os.environ,
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{
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"MASTER_ADDR": "1.2.3.4",
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"MASTER_PORT": "500",
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"WORLD_SIZE": "20",
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"RANK": "1",
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"LOCAL_RANK": "2",
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"GROUP_RANK": "3",
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},
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)
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def test_attributes_from_environment_variables(caplog):
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"""Test that the torchelastic cluster environment takes the attributes from the environment variables."""
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env = TorchElasticEnvironment()
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assert env.master_address() == "1.2.3.4"
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assert env.master_port() == 500
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assert env.world_size() == 20
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assert env.global_rank() == 1
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assert env.local_rank() == 2
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assert env.node_rank() == 3
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# setter should be no-op
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with caplog.at_level(logging.DEBUG, logger="pytorch_lightning.plugins.environments"):
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env.set_global_rank(100)
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assert env.global_rank() == 1
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assert "setting global rank is not allowed" in caplog.text
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caplog.clear()
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with caplog.at_level(logging.DEBUG, logger="pytorch_lightning.plugins.environments"):
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env.set_world_size(100)
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assert env.world_size() == 20
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assert "setting world size is not allowed" in caplog.text
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