Merge branch 'feature' of git.scc.kit.edu:mpp/mlmc into feature

.gitlab-ci.yml

@@ -9,11 +9,16 @@ cache:
 before_script:
     - module add foss
     - module add Anaconda3
-    - tar xjf sprng5.tar.bz2
-    - cd sprng5
-    - ./configure --with-mpi=yes --with-fortran=no
-    - make -j
-    - cd ..
+    
+    - if [ -z "$(ls sprng5/)" ]; then
+    -   tar xjf sprng5.tar.bz2
+    -   cd sprng5
+    -   ./configure --with-mpi=yes --with-fortran=no
+    -   make -j
+    -   cd ..
+    - else
+    -   echo "Using sprng5 from cache"
+    - fi
 
 build-mlmc:
   stage: build