Port MPI tests from SLI to Python, Part I

testsuite/do_tests.sh

@@ -145,6 +145,7 @@ ls -la "${TEST_BASEDIR}"
 
 NEST="nest_serial"
 HAVE_MPI="$(sli -c 'statusdict/have_mpi :: =only')"
+HAVE_OPENMP="$(sli -c 'is_threaded =only')"
 
 if test "${HAVE_MPI}" = "true"; then
     MPI_LAUNCHER="$(sli -c 'statusdict/mpiexec :: =only')"
@@ -503,17 +504,28 @@ if test "${PYTHON}"; then
     PYNEST_TEST_DIR="${TEST_BASEDIR}/pytests"
     XUNIT_NAME="07_pynesttests"
 
-    # Run all tests except those in the mpi* subdirectories because they cannot be run concurrently
+    # Run all tests except those in the mpi* and sli2py_mpi subdirectories because they cannot be run concurrently
     XUNIT_FILE="${REPORTDIR}/${XUNIT_NAME}.xml"
     env
     set +e
     "${PYTHON}" -m pytest --verbose --timeout $TIME_LIMIT --junit-xml="${XUNIT_FILE}" --numprocesses=1 \
-          --ignore="${PYNEST_TEST_DIR}/mpi" "${PYNEST_TEST_DIR}" 2>&1 | tee -a "${TEST_LOGFILE}"
+          --ignore="${PYNEST_TEST_DIR}/mpi" --ignore="${PYNEST_TEST_DIR}/sli2py_mpi" "${PYNEST_TEST_DIR}" 2>&1 | tee -a "${TEST_LOGFILE}"
     set -e
 
-    # Run tests in the mpi* subdirectories, grouped by number of processes
+    # Run tests in the sli2py_mpi subdirectory. The must be run without loading conftest.py.
+    if test "${HAVE_MPI}" = "true" && test "${HAVE_OPENMP}" = "true" ; then
+	XUNIT_FILE="${REPORTDIR}/${XUNIT_NAME}_sli2py_mpi.xml"
+	env
+	set +e
+	"${PYTHON}" -m pytest --noconftest --verbose --timeout $TIME_LIMIT --junit-xml="${XUNIT_FILE}" --numprocesses=1 \
+		    "${PYNEST_TEST_DIR}/sli2py_mpi" 2>&1 | tee -a "${TEST_LOGFILE}"
+	set -e
+    fi
+
+    # Run tests in the mpi/* subdirectories, with one subdirectory per number of processes to use
     if test "${HAVE_MPI}" = "true"; then
         if test "${MPI_LAUNCHER}"; then
+	    # Loop over subdirectories whose names are the number of mpi procs to use
             for numproc in $(cd ${PYNEST_TEST_DIR}/mpi/; ls -d */ | tr -d '/'); do
                 XUNIT_FILE="${REPORTDIR}/${XUNIT_NAME}_mpi_${numproc}.xml"
                 PYTEST_ARGS="--verbose --timeout $TIME_LIMIT --junit-xml=${XUNIT_FILE} ${PYNEST_TEST_DIR}/mpi/${numproc}"

testsuite/pytests/sli2py_mpi/README.md

@@ -0,0 +1,5 @@
+# MPI tests
+
+Test in this directory run NEST with different numbers of MPI ranks and compare results.
+
+See documentation in mpi_test_wrappe.py for details.