73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
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 SLURMEnvironment
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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 = SLURMEnvironment()
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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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with pytest.raises(KeyError):
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# world size is required to be passed as env variable
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env.world_size()
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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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with pytest.raises(KeyError):
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# node_rank is required to be passed as env variable
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env.node_rank()
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@mock.patch.dict(
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os.environ, {
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"SLURM_NODELIST": "1.1.1.1, 1.1.1.2",
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"SLURM_JOB_ID": "0001234",
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"SLURM_NTASKS": "20",
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"SLURM_LOCALID": "2",
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"SLURM_PROCID": "1",
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"SLURM_NODEID": "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 SLURM cluster environment takes the attributes from the environment variables. """
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env = SLURMEnvironment()
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assert env.master_address() == "1.1.1.1"
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assert env.master_port() == 15000 + 1234
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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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@pytest.mark.parametrize(
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"slurm_node_list,expected", [
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("alpha,beta,gamma", "alpha"),
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("alpha beta gamma", "alpha"),
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("1.2.3.[100-110]", "1.2.3.100"),
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]
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)
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def test_master_address_from_slurm_node_list(slurm_node_list, expected):
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""" Test extracting the master node from different formats for the SLURM_NODELIST. """
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with mock.patch.dict(os.environ, {"SLURM_NODELIST": slurm_node_list}):
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env = SLURMEnvironment()
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assert env.master_address() == expected
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