X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ftests%2Fuserprog%2Fmatmult.c;h=4f0615fa06fa642a531309dd0644fe60cccf9d44;hb=ca5e8cf5caf2dadcd0e36ad1ecd5e1dd67088392;hp=e88b4c900d74c9e66785eaecbcf6c590c37a35b2;hpb=d46fd132092304422193b717d9a60641604cc1b5;p=pintos-anon

diff --git a/src/tests/userprog/matmult.c b/src/tests/userprog/matmult.c
index e88b4c9..4f0615f 100644
--- a/src/tests/userprog/matmult.c
+++ b/src/tests/userprog/matmult.c
@@ -8,27 +8,29 @@
    and store the result back to the file system!
  */
 
+#include <stdio.h>
 #include <syscall.h>
 
-/* You should define this to be large enough that the arrays
+/* You should define DIM to be large enough that the arrays
    don't fit in physical memory.
 
-   Dim    Memory
-   ---  --------
-    20     93 kB
-    30    316 kB
-    40    750 kB
-    50  1,464 kB
-    60  2,531 kB
-    70  4,019 kB
-    80  6,000 kB
-    90  8,542 kB
-   100 11,718 kB */
-#define Dim 20
-
-int A[Dim][Dim];
-int B[Dim][Dim];
-int C[Dim][Dim];
+    Dim       Memory
+ ------     --------
+     16         3 kB
+     64        48 kB
+    128       192 kB
+    256       768 kB
+    512     3,072 kB
+  1,024    12,288 kB
+  2,048    49,152 kB
+  4,096   196,608 kB
+  8,192   786,432 kB
+ 16,384 3,145,728 kB */
+#define DIM 128
+
+int A[DIM][DIM];
+int B[DIM][DIM];
+int C[DIM][DIM];
 
 int
 main (void)
@@ -36,8 +38,8 @@ main (void)
   int i, j, k;
 
   /* Initialize the matrices. */
-  for (i = 0; i < Dim; i++)
-    for (j = 0; j < Dim; j++)
+  for (i = 0; i < DIM; i++)
+    for (j = 0; j < DIM; j++)
       {
 	A[i][j] = i;
 	B[i][j] = j;
@@ -45,11 +47,11 @@ main (void)
       }
 
   /* Multiply matrices. */
-  for (i = 0; i < Dim; i++)	
-    for (j = 0; j < Dim; j++)
-      for (k = 0; k < Dim; k++)
+  for (i = 0; i < DIM; i++)	
+    for (j = 0; j < DIM; j++)
+      for (k = 0; k < DIM; k++)
 	C[i][j] += A[i][k] * B[k][j];
 
   /* Done. */
-  exit (C[Dim - 1][Dim - 1]);
+  exit (C[DIM - 1][DIM - 1]);
 }