diff --git a/run_C6.pbs b/run_C6.pbs
index 6c7837a48fa75d2ba5e1998667c1fbf01acc7942..485edcab488a00d4491e36a3f1d7e4cbf68e538a 100755
--- a/run_C6.pbs
+++ b/run_C6.pbs
@@ -8,7 +8,7 @@
 
 cd $PBS_O_WORKDIR
 
-NP=48
+NP=40
 hostfile=wcl-1,wcl-2
 date