diff --git a/test/rt/nodes/fibonacci-mark.c b/test/rt/nodes/fibonacci-mark.c
index 5e9a62d..09f7af3 100644
--- a/test/rt/nodes/fibonacci-mark.c
+++ b/test/rt/nodes/fibonacci-mark.c
@@ -37,8 +37,8 @@ main(void)
 	ovni_mark_type(RUN, OVNI_MARK_STACK, "Fibonacci run");
 
 	long res = 0;
-	for (int i = 1; i <= 30; i++) {
-		fib2(15, &res, i);
+	for (int i = 1; i <= 10; i++) {
+		fib2(12, &res, i);
 		#pragma oss taskwait
 	}
 
diff --git a/test/rt/nodes/heat-mark.c b/test/rt/nodes/heat-mark.c
index ce93df0..ef40726 100644
--- a/test/rt/nodes/heat-mark.c
+++ b/test/rt/nodes/heat-mark.c
@@ -110,15 +110,15 @@ main(void)
 	ovni_mark_type(TIME, OVNI_MARK_STACK, "Heat time");
 
 	/* The real number of allocated rows and columns will be bigger */
-	long _rows = 8L * 1024L;
+	long _rows = 1L * 1024L;
 	long _cols = _rows;
 
 	rows = _rows + 2;
 	cols = _cols + 2;
 
-	rbs = 128L;
+	rbs = 64L;
 	cbs = rbs;
-	timesteps = 10L;
+	timesteps = 5L;
 
 	nrb = (rows - 2) / rbs + 2;
 	ncb = (cols - 2) / cbs + 2;