Execute tests in parallel

.gitlab-ci.yml

@@ -41,6 +41,7 @@ stages:
 #        - export MAKEFLAGS="-l$(echo 1.5*$NUM_CORES | bc) -j$NUM_CORES"
         - export NINJAFLAGS="-j$NUM_CORES"
         - export CTEST_OUTPUT_ON_FAILURE=1
+        - export CTEST_PARALLEL_LEVEL=4
         - mkdir -p "./builddir/$CI_JOB_NAME"
         - pushd "./builddir/$CI_JOB_NAME"
         - cmake ../..

build

@@ -204,5 +204,5 @@ if [[ ${WITH_DOC} == "yes" ]]; then
 fi
 
 if [[ ${WITH_TESTS} == "yes" ]] && [[ ${RUN_TESTS} == "yes" ]]; then
-   CTEST_OUTPUT_ON_FAILURE=1 $make test
+   CTEST_PARALLEL_LEVEL=4 CTEST_OUTPUT_ON_FAILURE=1 $make test
 fi