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5960497 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | import os
import sys
import subprocess
import cloudpickle
import base64
import pytest
from functools import wraps
try:
from mpi4py import MPI
except ImportError:
MPI = None
def with_mpi(nproc=2, timeout=30, skip_if_no_mpi=True):
def outer_thunk(fn):
@wraps(fn)
def thunk(*args, **kwargs):
serialized_fn = base64.b64encode(cloudpickle.dumps(lambda: fn(*args, **kwargs)))
subprocess.check_call([
'mpiexec','-n', str(nproc),
sys.executable,
'-m', 'baselines.common.tests.test_with_mpi',
serialized_fn
], env=os.environ, timeout=timeout)
if skip_if_no_mpi:
return pytest.mark.skipif(MPI is None, reason="MPI not present")(thunk)
else:
return thunk
return outer_thunk
if __name__ == '__main__':
if len(sys.argv) > 1:
fn = cloudpickle.loads(base64.b64decode(sys.argv[1]))
assert callable(fn)
fn()
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