diff --git a/exp/eval_mcts.sh b/exp/eval_mcts.sh
index 8f8a3fd262..fa355fe6f5 100755
--- a/exp/eval_mcts.sh
+++ b/exp/eval_mcts.sh
@@ -6,4 +6,4 @@
 #$ -o /dev/null
 #SGE_TASK_ID=100
 args=`grep MCTS exp/args | head -$SGE_TASK_ID | tail -1`
-java -Xmx256M -DrndSeed=$SGE_TASK_ID -cp build magic.DeckStrCal $args > $SGE_TASK_ID.out 2> $SGE_TASK_ID.err
+java -Xmx512M -DrndSeed=$SGE_TASK_ID -cp build magic.DeckStrCal $args > $SGE_TASK_ID.out 2> $SGE_TASK_ID.err