from mpi4py import rc rc.initialize = False from mpi4py import MPI assert not MPI.Is_initialized() assert not MPI.Is_finalized() MPI.Init_thread() assert MPI.Is_initialized() assert not MPI.Is_finalized() import sys name, _ = MPI.get_vendor() if name == 'MPICH2' and sys.platform[:3]!='win': assert MPI.Query_thread() == MPI.THREAD_MULTIPLE MPI.Finalize() assert MPI.Is_initialized() assert MPI.Is_finalized()