From: Matthias Maier <tamiko@43-1.org>
Date: Sat, 8 Jul 2023 14:39:42 +0000 (-0500)
Subject: CMake: avoid "binding to none" for performance tests
X-Git-Tag: relicensing~717^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d01cd10c876790f3316bd4b490f68be8629e2518;p=dealii.git

CMake: avoid "binding to none" for performance tests

It turns out that this change introduces a lot of noise. Let us thus not
override the mpi binding policy if we already run exclusively.
---

diff --git a/cmake/macros/macro_deal_ii_add_test.cmake b/cmake/macros/macro_deal_ii_add_test.cmake
index 40ede17232..43cdeb459b 100644
--- a/cmake/macros/macro_deal_ii_add_test.cmake
+++ b/cmake/macros/macro_deal_ii_add_test.cmake
@@ -637,7 +637,10 @@ function(deal_ii_add_test _category _test_name _comparison_file)
         # Ensure that the test is not executed concurrently with any other
         # tests.
         #
-        set_tests_properties(${_test_full} PROPERTIES RUN_SERIAL TRUE)
+        set_tests_properties(${_test_full} PROPERTIES
+          RUN_SERIAL TRUE
+          ENVIRONMENT "TEST_IS_EXCLUSIVE=true"
+          )
 
       else()
         #
diff --git a/cmake/scripts/run_test.sh b/cmake/scripts/run_test.sh
index cb1383a088..4da68f557c 100644
--- a/cmake/scripts/run_test.sh
+++ b/cmake/scripts/run_test.sh
@@ -91,8 +91,15 @@ case $STAGE in
     #    cores/processors/sockets. Otherwise we run the risk that multiple
     #    mpi tests (for example with two ranks) are all pinned to the same
     #    processor core, bringing everything to a grinding halt.
+    #
+    #    If the test runs exclusively, however, do not override MPI binding
+    #    policies. This is important to ensure that performance tests are
+    #    scheduled properly.
+    #
     export OMPI_MCA_rmaps_base_oversubscribe=1
-    export OMPI_MCA_hwloc_base_binding_policy=none
+    if [ -z "${TEST_IS_EXCLUSIVE+x}" ]; then
+      export OMPI_MCA_hwloc_base_binding_policy=none
+    fi
 
     #
     # Kokkos parameters: