source: pacpussensors/trunk/Vislab/lib3dv-1.2.0/lib3dv/eigen/bench/basicbenchmark.h@ 139

Last change on this file since 139 was 136, checked in by ldecherf, 8 years ago

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1
2#ifndef EIGEN_BENCH_BASICBENCH_H
3#define EIGEN_BENCH_BASICBENCH_H
4
5enum {LazyEval, EarlyEval, OmpEval};
6
7template<int Mode, typename MatrixType>
8void benchBasic_loop(const MatrixType& I, MatrixType& m, int iterations) __attribute__((noinline));
9
10template<int Mode, typename MatrixType>
11void benchBasic_loop(const MatrixType& I, MatrixType& m, int iterations)
12{
13 for(int a = 0; a < iterations; a++)
14 {
15 if (Mode==LazyEval)
16 {
17 asm("#begin_bench_loop LazyEval");
18 if (MatrixType::SizeAtCompileTime!=Eigen::Dynamic) asm("#fixedsize");
19 m = (I + 0.00005 * (m + m.lazy() * m)).eval();
20 }
21 else if (Mode==OmpEval)
22 {
23 asm("#begin_bench_loop OmpEval");
24 if (MatrixType::SizeAtCompileTime!=Eigen::Dynamic) asm("#fixedsize");
25 m = (I + 0.00005 * (m + m.lazy() * m)).evalOMP();
26 }
27 else
28 {
29 asm("#begin_bench_loop EarlyEval");
30 if (MatrixType::SizeAtCompileTime!=Eigen::Dynamic) asm("#fixedsize");
31 m = I + 0.00005 * (m + m * m);
32 }
33 asm("#end_bench_loop");
34 }
35}
36
37template<int Mode, typename MatrixType>
38double benchBasic(const MatrixType& mat, int size, int tries) __attribute__((noinline));
39
40template<int Mode, typename MatrixType>
41double benchBasic(const MatrixType& mat, int iterations, int tries)
42{
43 const int rows = mat.rows();
44 const int cols = mat.cols();
45
46 MatrixType I(rows,cols);
47 MatrixType m(rows,cols);
48
49 initMatrix_identity(I);
50
51 Eigen::BenchTimer timer;
52 for(uint t=0; t<tries; ++t)
53 {
54 initMatrix_random(m);
55 timer.start();
56 benchBasic_loop<Mode>(I, m, iterations);
57 timer.stop();
58 cerr << m;
59 }
60 return timer.value();
61};
62
63#endif // EIGEN_BENCH_BASICBENCH_H
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