33 lines
1.1 KiB
Python
33 lines
1.1 KiB
Python
|
import os
|
||
|
|
import pytest
|
||
|
|
import textwrap
|
||
|
|
|
||
|
|
from sklearn import __version__
|
||
|
|
from sklearn.utils._openmp_helpers import _openmp_parallelism_enabled
|
||
|
|
|
||
|
|
|
||
|
|
def test_openmp_parallelism_enabled():
|
||
|
|
# Check that sklearn is built with OpenMP-based parallelism enabled.
|
||
|
|
# This test can be skipped by setting the environment variable
|
||
|
|
# ``SKLEARN_SKIP_OPENMP_TEST``.
|
||
|
|
if os.getenv("SKLEARN_SKIP_OPENMP_TEST"):
|
||
|
|
pytest.skip("test explicitly skipped (SKLEARN_SKIP_OPENMP_TEST)")
|
||
|
|
|
||
|
|
base_url = "dev" if __version__.endswith(".dev0") else "stable"
|
||
|
|
err_msg = textwrap.dedent(
|
||
|
|
"""
|
||
|
|
This test fails because scikit-learn has been built without OpenMP.
|
||
|
|
This is not recommended since some estimators will run in sequential
|
||
|
|
mode instead of leveraging thread-based parallelism.
|
||
|
|
|
||
|
|
You can find instructions to build scikit-learn with OpenMP at this
|
||
|
|
address:
|
||
|
|
|
||
|
|
https://scikit-learn.org/{}/developers/advanced_installation.html
|
||
|
|
|
||
|
|
You can skip this test by setting the environment variable
|
||
|
|
SKLEARN_SKIP_OPENMP_TEST to any value.
|
||
|
|
""").format(base_url)
|
||
|
|
|
||
|
|
assert _openmp_parallelism_enabled(), err_msg
|