1//===================================================== 2// File : x86_perf_analyzer.hh 3// Author : L. Plagne <laurent.plagne@edf.fr)> 4// Copyright (C) EDF R&D, mar d�c 3 18:59:35 CET 2002 5//===================================================== 6// 7// This program is free software; you can redistribute it and/or 8// modify it under the terms of the GNU General Public License 9// as published by the Free Software Foundation; either version 2 10// of the License, or (at your option) any later version. 11// 12// This program is distributed in the hope that it will be useful, 13// but WITHOUT ANY WARRANTY; without even the implied warranty of 14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15// GNU General Public License for more details. 16// You should have received a copy of the GNU General Public License 17// along with this program; if not, write to the Free Software 18// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 19// 20#ifndef _X86_PERF_ANALYSER_HH 21#define _X86_PERF_ANALYSER_HH 22 23#include "x86_timer.hh" 24#include "bench_parameter.hh" 25 26template<class ACTION> 27class X86_Perf_Analyzer{ 28public: 29 X86_Perf_Analyzer( unsigned long long nb_sample=DEFAULT_NB_SAMPLE):_nb_sample(nb_sample),_chronos() 30 { 31 MESSAGE("X86_Perf_Analyzer Ctor"); 32 _chronos.find_frequency(); 33 }; 34 X86_Perf_Analyzer( const X86_Perf_Analyzer & ){ 35 INFOS("Copy Ctor not implemented"); 36 exit(0); 37 }; 38 ~X86_Perf_Analyzer( void ){ 39 MESSAGE("X86_Perf_Analyzer Dtor"); 40 }; 41 42 43 inline double eval_mflops(int size) 44 { 45 46 ACTION action(size); 47 48 int nb_loop=5; 49 double calculate_time=0.0; 50 double baseline_time=0.0; 51 52 for (int j=0 ; j < nb_loop ; j++){ 53 54 _chronos.clear(); 55 56 for(int i=0 ; i < _nb_sample ; i++) 57 { 58 _chronos.start(); 59 action.initialize(); 60 action.calculate(); 61 _chronos.stop(); 62 _chronos.add_get_click(); 63 } 64 65 calculate_time += double(_chronos.get_shortest_clicks())/_chronos.frequency(); 66 67 if (j==0) action.check_result(); 68 69 _chronos.clear(); 70 71 for(int i=0 ; i < _nb_sample ; i++) 72 { 73 _chronos.start(); 74 action.initialize(); 75 _chronos.stop(); 76 _chronos.add_get_click(); 77 78 } 79 80 baseline_time+=double(_chronos.get_shortest_clicks())/_chronos.frequency(); 81 82 } 83 84 double corrected_time = (calculate_time-baseline_time)/double(nb_loop); 85 86 87// INFOS("_nb_sample="<<_nb_sample); 88// INFOS("baseline_time="<<baseline_time); 89// INFOS("calculate_time="<<calculate_time); 90// INFOS("corrected_time="<<corrected_time); 91 92// cout << size <<" "<<baseline_time<<" "<<calculate_time<<" "<<corrected_time<<" "<<action.nb_op_base() << endl; 93 94 return action.nb_op_base()/(corrected_time*1000000.0); 95 //return action.nb_op_base()/(calculate_time*1000000.0); 96 } 97 98private: 99 100 X86_Timer _chronos; 101 unsigned long long _nb_sample; 102 103 104}; 105 106 107 108#endif 109