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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