From 9d9d81ad71a52c33ba4db9f8a6059d435d279316 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Sun, 9 Mar 2008 16:13:47 +0000
Subject:  * basic support for multicore CPU via a .evalOMP() which   
 internaly uses OpenMP if enabled at compile time.  * added a bench/ folder
 with a couple benchmarks and benchmark tools.

---
 bench/benchmark.cpp | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 bench/benchmark.cpp

(limited to 'bench/benchmark.cpp')

diff --git a/bench/benchmark.cpp b/bench/benchmark.cpp
new file mode 100644
index 000000000..0d95a5043
--- /dev/null
+++ b/bench/benchmark.cpp
@@ -0,0 +1,31 @@
+// g++ -O3 -DNDEBUG -DMATSIZE=<x> benchmark.cpp -o benchmark && time ./benchmark
+#include <cstdlib>
+#include <cmath>
+#include <Eigen/Core>
+
+#ifndef MATSIZE
+#define MATSIZE 3
+#endif
+
+using namespace std;
+USING_PART_OF_NAMESPACE_EIGEN
+
+int main(int argc, char *argv[])
+{
+    Matrix<double,MATSIZE,MATSIZE> I;
+    Matrix<double,MATSIZE,MATSIZE> m;
+    for(int i = 0; i < MATSIZE; i++)
+        for(int j = 0; j < MATSIZE; j++)
+        {
+            I(i,j) = (i==j);
+            m(i,j) = (i+MATSIZE*j);
+        }
+    asm("#begin");
+    for(int a = 0; a < 40000000; a++)
+    {
+        m = I + 0.00005 * (m + m*m);
+    }
+    asm("#end");
+    cout << m << endl;
+    return 0;
+}
-- 
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