From 7359a36ff3c132c09e09c88a0c63e830de83a873 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20Kl=C3=B6ckner?= <inform@tiker.net>
Date: Fri, 17 Aug 2018 01:55:14 -0400
Subject: [PATCH] Use -m mpi4py.run in spawning subprocesses

---
 test/test_mpi_communication.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/test/test_mpi_communication.py b/test/test_mpi_communication.py
index 88609964..7ed5233d 100644
--- a/test/test_mpi_communication.py
+++ b/test/test_mpi_communication.py
@@ -276,7 +276,8 @@ def test_simple_mpi(num_ranks):
         "mpiexec", "-np", str(num_ranks),
         "-x", "RUN_WITHIN_MPI=1",
         "-x", "TEST_SIMPLE_MPI_COMMUNICATION=1",
-        sys.executable, __file__])
+        # https://mpi4py.readthedocs.io/en/stable/mpi4py.run.html
+        sys.executable, "-m", "mpi4py.run", __file__])
 
 # }}}
 
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