schedulers.sh: reduce case

examples/scheduler/schedulers.sh

@@ -39,6 +39,6 @@ fi
 for sched in $SCHEDULERS
 do
     echo "cholesky.$sched"
-    STARPU_SCHED=$sched $STARPU_LAUNCH $basedir/../cholesky/cholesky_tag -size $((960*3)) -nblocks 3
+    STARPU_SCHED=$sched $STARPU_LAUNCH $basedir/../cholesky/cholesky_tag -size $((320*3)) -nblocks 3
     check_success $?
 done