[136] | 1 | //=====================================================
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| 2 | // File : x86_perf_analyzer.hh
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| 3 | // Author : L. Plagne <laurent.plagne@edf.fr)>
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| 4 | // Copyright (C) EDF R&D, mar d�c 3 18:59:35 CET 2002
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| 5 | //=====================================================
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| 6 | //
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| 7 | // This program is free software; you can redistribute it and/or
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| 8 | // modify it under the terms of the GNU General Public License
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| 9 | // as published by the Free Software Foundation; either version 2
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| 10 | // of the License, or (at your option) any later version.
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| 11 | //
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| 12 | // This program is distributed in the hope that it will be useful,
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| 13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | // GNU General Public License for more details.
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| 16 | // You should have received a copy of the GNU General Public License
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| 17 | // along with this program; if not, write to the Free Software
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| 18 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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| 19 | //
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| 20 | #ifndef _X86_PERF_ANALYSER_HH
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| 21 | #define _X86_PERF_ANALYSER_HH
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| 22 |
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| 23 | #include "x86_timer.hh"
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| 24 | #include "bench_parameter.hh"
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| 25 |
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| 26 | template<class ACTION>
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| 27 | class X86_Perf_Analyzer{
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| 28 | public:
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| 29 | X86_Perf_Analyzer( unsigned long long nb_sample=DEFAULT_NB_SAMPLE):_nb_sample(nb_sample),_chronos()
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| 30 | {
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| 31 | MESSAGE("X86_Perf_Analyzer Ctor");
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| 32 | _chronos.find_frequency();
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| 33 | };
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| 34 | X86_Perf_Analyzer( const X86_Perf_Analyzer & ){
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| 35 | INFOS("Copy Ctor not implemented");
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| 36 | exit(0);
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| 37 | };
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| 38 | ~X86_Perf_Analyzer( void ){
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| 39 | MESSAGE("X86_Perf_Analyzer Dtor");
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| 40 | };
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| 41 |
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| 42 |
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| 43 | inline double eval_mflops(int size)
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| 44 | {
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| 45 |
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| 46 | ACTION action(size);
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| 47 |
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| 48 | int nb_loop=5;
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| 49 | double calculate_time=0.0;
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| 50 | double baseline_time=0.0;
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| 51 |
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| 52 | for (int j=0 ; j < nb_loop ; j++){
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| 53 |
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| 54 | _chronos.clear();
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| 55 |
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| 56 | for(int i=0 ; i < _nb_sample ; i++)
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| 57 | {
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| 58 | _chronos.start();
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| 59 | action.initialize();
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| 60 | action.calculate();
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| 61 | _chronos.stop();
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| 62 | _chronos.add_get_click();
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| 63 | }
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| 64 |
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| 65 | calculate_time += double(_chronos.get_shortest_clicks())/_chronos.frequency();
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| 66 |
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| 67 | if (j==0) action.check_result();
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| 68 |
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| 69 | _chronos.clear();
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| 70 |
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| 71 | for(int i=0 ; i < _nb_sample ; i++)
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| 72 | {
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| 73 | _chronos.start();
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| 74 | action.initialize();
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| 75 | _chronos.stop();
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| 76 | _chronos.add_get_click();
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| 77 |
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| 78 | }
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| 79 |
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| 80 | baseline_time+=double(_chronos.get_shortest_clicks())/_chronos.frequency();
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| 81 |
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| 82 | }
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| 83 |
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| 84 | double corrected_time = (calculate_time-baseline_time)/double(nb_loop);
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| 85 |
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| 86 |
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| 87 | // INFOS("_nb_sample="<<_nb_sample);
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| 88 | // INFOS("baseline_time="<<baseline_time);
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| 89 | // INFOS("calculate_time="<<calculate_time);
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| 90 | // INFOS("corrected_time="<<corrected_time);
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| 91 |
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| 92 | // cout << size <<" "<<baseline_time<<" "<<calculate_time<<" "<<corrected_time<<" "<<action.nb_op_base() << endl;
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| 93 |
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| 94 | return action.nb_op_base()/(corrected_time*1000000.0);
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| 95 | //return action.nb_op_base()/(calculate_time*1000000.0);
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| 96 | }
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| 97 |
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| 98 | private:
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| 99 |
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| 100 | X86_Timer _chronos;
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| 101 | unsigned long long _nb_sample;
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| 102 |
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| 103 |
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| 104 | };
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| 105 |
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| 106 |
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| 107 |
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| 108 | #endif
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