make non-long benchs reasonable

mpi/tests/bench_helper.h

@@ -24,6 +24,10 @@
 	#define MULT_DEFAULT 4
 	#define LOOPS_DEFAULT 100
 	#define NX_MAX (64 * 1024 * 1024) // kB
+#elif !defined(STARPU_LONG_CHECK)
+	#define MULT_DEFAULT 4
+	#define LOOPS_DEFAULT 10000
+	#define NX_MAX (128 * 1024 * 1024) // kB
 #else
 	#define MULT_DEFAULT 2
 	#define LOOPS_DEFAULT 100000