1 files changed, 69 insertions, 0 deletions
diff --git a/eigen/bench/perf_monitoring/gemv_common.h b/eigen/bench/perf_monitoring/gemv_common.h
new file mode 100644
index 0000000..cc32577
--- /dev/null
+++ b/eigen/bench/perf_monitoring/gemv_common.h
@@ -0,0 +1,69 @@
+#include <iostream>
+#include <fstream>
+#include <vector>
+#include <string>
+#include <functional>
+#include "eigen_src/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;
+typedef Matrix<Scalar,Dynamic,1>       Vec;
+
+template<typename Func>
+EIGEN_DONT_INLINE
+double bench(long m, long n, Func &f)
+{
+  Mat A(m,n);
+  Vec B(n);
+  Vec C(m);
+  A.setRandom();
+  B.setRandom();
+  C.setRandom();
+
+  BenchTimer t;
+
+  double up = 1e8/sizeof(Scalar);
+  double tm0 = 4, tm1 = 10;
+  if(NumTraits<Scalar>::IsComplex)
+  {
+    up /= 4;
+    tm0 = 2;
+    tm1 = 4;
+  }
+
+  double flops = 2. * m * n;
+  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_gemv(int argc, char **argv, Func& f)
+{
+  std::vector<double> results;
+
+  std::string filename = std::string("gemv_settings.txt");
+  if(argc>1)
+    filename = std::string(argv[1]);
+  std::ifstream settings(filename);
+  long m, n;
+  while(settings >> m >> n)
+  {
+    //std::cerr << "  Testing " << m << " " << n << std::endl;
+    results.push_back( bench(m, n, f) );
+  }
+
+  std::cout << RowVectorXd::Map(results.data(), results.size());
+
+  return 0;
+}