File: spawn_child.py

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mpi4py 4.0.3-4
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import sys
sys.path.insert(0, sys.argv[1])

from mpi4py import MPI
parent = MPI.Comm.Get_parent()
parent.Barrier()
parent.Disconnect()
assert parent == MPI.COMM_NULL
parent = MPI.Comm.Get_parent()
assert parent == MPI.COMM_NULL