use char arrayHEADmaster

1 files changed, 7 insertions, 2 deletions

diff --git a/testn.c b/testn.c
index 84815aa..36a15c3 100644
--- a/testn.c
+++ b/testn.c
@@ -1,14 +1,19 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
+// 256 bytes = 4 * 64 = 4 * cachelines
+// with 4-way associative cache one row
+// traverse each set.
+// With 8-way associative cache the col number
+// should be doubled.
+#define COLS 256
 #define ROWS 1024
-#define COLS 64
 #define VFL 6291456
 #ifndef OFF
 #define OFF 0
 #endif
 
-char arr[ROWS*4][(COLS+OFF)*4] __attribute__((aligned(4096)));
+char arr[ROWS][COLS+OFF*4] __attribute__((aligned(4096)));
 char arr2[VFL];
 
 int main() {