[pypy-commit] extradoc extradoc: Add array benchmark
fijal
noreply at buildbot.pypy.org
Mon Jun 13 11:15:49 CEST 2011
Author: Maciej Fijalkowski <fijall at gmail.com>
Branch: extradoc
Changeset: r3657:4c8e1b00e547
Date: 2011-06-13 11:17 +0200
http://bitbucket.org/pypy/extradoc/changeset/4c8e1b00e547/
Log: Add array benchmark
diff --git a/talk/iwtc11/benchmarks/numpy/array.c b/talk/iwtc11/benchmarks/numpy/array.c
new file mode 100644
--- /dev/null
+++ b/talk/iwtc11/benchmarks/numpy/array.c
@@ -0,0 +1,36 @@
+
+#include <stdlib.h>
+#include <stdio.h>
+
+double *create_array(int size)
+{
+ int i;
+ double *a = (double*)malloc(size * sizeof(double));
+ for (i = 0; i < size; ++i) {
+ a[i] = (double)(i % 10);
+ }
+ return a;
+}
+
+#define MAX 5
+#define SIZE 10000000
+#define ITERATIONS 10
+
+int main()
+{
+ double *a[MAX];
+ double *res;
+ int i, k;
+
+ for (i = 0; i < MAX; ++i) {
+ a[i] = create_array(SIZE);
+ }
+ res = create_array(SIZE);
+ // actual loop
+ for (k = 0; k < ITERATIONS; ++k) {
+ for (i = 0; i < SIZE; ++i) {
+ res[i] = a[0][i] + a[1][i] + a[2][i] + a[3][i] + a[4][i];
+ }
+ printf("%f\n", res[125]); // to kill the optimizer
+ }
+}
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