Fix error propagations

run_scripts/StartLongRun.bash

@@ -14,7 +14,7 @@ NUM_JOBS=3
 RUNTIME_PER_JOB="00:20:00"
 
 # Make sure ROOT_OUTPUT_DIR was set in variables.bash
-[ "x$ROOT_OUTPUT_DIR" = x ] && source variables.bash
+[ "x$ROOT_OUTPUT_DIR" = x ] && source variables.bash || exit 1
 
 # Set checkpoint directory
 TIMESTAMP=`date +%Y-%m-%d_%H-%M-%S`

run_scripts/activate.bash

@@ -14,17 +14,17 @@ fi
 [ -x "$(command -v deactivate)" ] && deactivate
 
 module purge
-source modules.bash
+source modules.bash || return 1
 
-source variables.bash
-source utils.bash
+source variables.bash || return 1
+source utils.bash || return 1
 
 if ! [ -d "$VENV_DIR" ]; then
      echo 'Please execute `nice bash set_up.bash` before continuing.'
      return 1
 fi
 
-source "$VENV_DIR/bin/activate"
+source "$VENV_DIR/bin/activate" || return 1
 export PYTHONPATH="$(realpath "$VENV_DIR"/lib/python*/site-packages):$PYTHONPATH"
 
 # Set `TORCH_CUDA_ARCH_LIST` according to GPU's compute capability.
@@ -36,7 +36,7 @@ elif [ "$SYSTEMNAME" = juwels ]; then
     export TORCH_CUDA_ARCH_LIST='7.0'
 else
     echo "The machine \"$SYSTEMNAME\" is currently not supported."
-    return
+    return 1
 fi
 
 # Also allow generating PTX instructions (just because, we could also