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import os
from cupy.testing._pytest_impl import is_available, check_available
if is_available():
import pytest
_gpu_limit = int(os.getenv('CUPY_TEST_GPU_LIMIT', '-1'))
def slow(*args, **kwargs):
return pytest.mark.slow(*args, **kwargs)
else:
def _dummy_callable(*args, **kwargs):
check_available('pytest attributes')
assert False # Not reachable
slow = _dummy_callable
def multi_gpu(gpu_num):
"""Decorator to indicate number of GPUs required to run the test.
Tests can be annotated with this decorator (e.g., ``@multi_gpu(2)``) to
declare number of GPUs required to run. When running tests, if
``CUPY_TEST_GPU_LIMIT`` environment variable is set to value greater
than or equals to 0, test cases that require GPUs more than the limit will
be skipped.
"""
check_available('multi_gpu attribute')
# at this point we know pytest is available for sure
assert 1 < gpu_num
def _wrapper(f):
return pytest.mark.skipif(
0 <= _gpu_limit < gpu_num,
reason='{} GPUs required'.format(gpu_num))(
pytest.mark.multi_gpu(f))
return _wrapper
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