From 3855ab472f1bd523ba51122b731c4336182a3268 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Wed, 7 Dec 2016 14:23:49 +0100
Subject: Cleanup file structure

---
 bench/perf_monitoring/gemm_common.h | 66 +++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 bench/perf_monitoring/gemm_common.h

(limited to 'bench/perf_monitoring/gemm_common.h')

diff --git a/bench/perf_monitoring/gemm_common.h b/bench/perf_monitoring/gemm_common.h
new file mode 100644
index 000000000..34ff5edb8
--- /dev/null
+++ b/bench/perf_monitoring/gemm_common.h
@@ -0,0 +1,66 @@
+#include <iostream>
+#include <fstream>
+#include <vector>
+#include <Eigen/Core>
+#include "../../BenchTimer.h"
+using namespace Eigen;
+
+#ifndef SCALAR
+#error SCALAR must be defined
+#endif
+
+typedef SCALAR Scalar;
+
+typedef Matrix<Scalar,Dynamic,Dynamic> Mat;
+
+template<typename Func>
+EIGEN_DONT_INLINE
+double bench(long m, long n, long k, const Func& f)
+{
+  Mat A(m,k);
+  Mat B(k,n);
+  Mat C(m,n);
+  A.setRandom();
+  B.setRandom();
+  C.setZero();
+  
+  BenchTimer t;
+  
+  double up = 1e8*4/sizeof(Scalar);
+  double tm0 = 4, tm1 = 10;
+  if(NumTraits<Scalar>::IsComplex)
+  {
+    up /= 4;
+    tm0 = 2;
+    tm1 = 4;
+  }
+  
+  double flops = 2. * m * n * k;
+  long rep = std::max(1., std::min(100., up/flops) );
+  long tries = std::max(tm0, std::min(tm1, up/flops) );
+  
+  BENCH(t, tries, rep, f(A,B,C));
+  
+  return 1e-9 * rep * flops / t.best();
+}
+
+template<typename Func>
+int main_gemm(int argc, char **argv, const Func& f)
+{
+  std::vector<double> results;
+  
+  std::string filename = std::string("gemm_settings.txt");
+  if(argc>1)
+    filename = std::string(argv[1]);
+  std::ifstream settings(filename);
+  long m, n, k;
+  while(settings >> m >> n >> k)
+  {
+    //std::cerr << "  Testing " << m << " " << n << " " << k << std::endl;
+    results.push_back( bench(m, n, k, f) );
+  }
+  
+  std::cout << RowVectorXd::Map(results.data(), results.size());
+  
+  return 0;
+}
-- 
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