diff --git a/examples/diffusion.slurm b/examples/diffusion.slurm
index a872dd8..ff77105 100644
--- a/examples/diffusion.slurm
+++ b/examples/diffusion.slurm
@@ -1,29 +1,23 @@
 #!/bin/bash
 # author: gilles fourestey (EPFL)
 #
 #SBATCH --nodes=2
 #SBATCH --ntasks=2
 #SBATCH --ntasks-per-node=1
 #SBATCH --cpus-per-task=24
 #set -x
 #
-
 module load spark/2.0.2
-
-echo "---- starting $0 on $HOSTNAME"
-echo
-#
-MASTER_NODE=""
 #
 start-spark.sh
 #
 MASTER_IP=$(cat ${SLURM_JOBID}_spark_master)
 #
 echo $MASTER_IP
 time time spark-submit \
 --executor-memory 5G \
 --master $MASTER_IP \
 ./diffusion.py
 #
 stop-spark.sh
 #