switch off OpenMP altogether

.gitlab-ci.yml

@@ -2,6 +2,7 @@ image: $CONTAINER_TEST_IMAGE
 
 variables:
   CONTAINER_TEST_IMAGE: gitlab-registry.mpcdf.mpg.de/ift/nifty:$CI_BUILD_REF_NAME
+  OMP_NUM_THREADS: 1
 
 stages:
   - build_docker
@@ -46,13 +47,13 @@ test_python2_mpi:
   stage: test
   script:
     - python setup.py install --user -f
-    - OMP_NUM_THREADS=1 mpiexec -n 2 nosetests -q 2> /dev/null
+    - mpiexec -n 2 nosetests -q 2> /dev/null
 
 test_python3_mpi:
   stage: test
   script:
     - python3 setup.py install --user -f
-    - OMP_NUM_THREADS=1 mpiexec -n 2 nosetests3 -q 2> /dev/null
+    - mpiexec -n 2 nosetests3 -q 2> /dev/null
 
 pages:
   stage: release