diff --git a/build.sbatch b/build.sbatch
index a4a6f8e..18a2a45 100755
--- a/build.sbatch
+++ b/build.sbatch
@@ -1,9 +1,18 @@
 #!/usr/bin/env bash
 #SBATCH --time=00:10:00
 #SBATCH --partition=cpu
-#SBATCH --output=./output/output_build.txt
-#SBATCH --error=./output/error_build.txt
-#SBATCH --nodelist=oc-compute02
-#SBATCH --mem=4G
-#SBATCH -c16
-srun nix develop --command stack --no-nix --system-ghc --no-install-ghc build
+#SBATCH --array=0-27
+#SBATCH --output=./output/output_run_%a.txt
+#SBATCH --error=./output/error_run_%a.txt
+#SBATCH --nodelist=oc-compute02,oc-compute03
+#SBATCH --mem=2G
+problems=("iris" "nurse" "german")
+
+current_problem=${problems[(${SLURM_ARRAY_TASK_ID}/9)]}
+current_variant=$(((${SLURM_ARRAY_TASK_ID}) % 9 + 1))
+current_branch="${current_problem}_${current_variant}"
+
+git clone -b $current_branch --single-branch "https://merl.dnshome.de/git/Hans/haga.git" /data/oc-compute02/merljoha/$current_branch
+git clone -b $current_branch --single-branch "https://merl.dnshome.de/git/Hans/haga.git" /data/oc-compute03/merljoha/$current_branch
+
+srun bash -c "cd /data/$SLURMD_NODENAME/merljoha/$current_branch; nix develop --command stack --no-nix --system-ghc --no-install-ghc build"