diff --git a/tests/stream-ceprei/run.sh b/tests/stream-ceprei/run.sh
index 21a0f4596bff61c95cca3ab6c14adcf0b530fe37..29af8a8a5ec73a147d441b90732d1f18533e058d 100644
--- a/tests/stream-ceprei/run.sh
+++ b/tests/stream-ceprei/run.sh
@@ -12,7 +12,9 @@ run()
 
 	STREAM_ARRAY_SIZE=$(echo "$l3_cache_bytes_all * 4.1 /8" | bc)
 	echo "STREAM_ARRAY_SIZE: $STREAM_ARRAY_SIZE"
-	
+	if [ -z "$STREAM_ARRAY_SIZE" ]; then
+            STREAM_ARRAY_SIZE="100000000"
+        fi
 	if [ $test == 'full_thread' ];then
 		gcc -O3 stream.c -o stream -D"STREAM_ARRAY_SIZE=$STREAM_ARRAY_SIZE" -fopenmp
 	else