1 | //=====================================================
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2 | // File : bench.hh
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3 | // Author : L. Plagne <laurent.plagne@edf.fr)>
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4 | // Copyright (C) EDF R&D, lun sep 30 14:23:16 CEST 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 BENCH_HH
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21 | #define BENCH_HH
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22 |
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23 | #include "btl.hh"
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24 | #include "bench_parameter.hh"
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25 | #include <iostream>
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26 | #include "utilities.h"
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27 | #include "size_lin_log.hh"
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28 | #include "xy_file.hh"
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29 | #include <vector>
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30 | #include <string>
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31 | #include "timers/portable_perf_analyzer.hh"
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32 | // #include "timers/mixed_perf_analyzer.hh"
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33 | // #include "timers/x86_perf_analyzer.hh"
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34 | // #include "timers/STL_perf_analyzer.hh"
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35 | #ifdef HAVE_MKL
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36 | extern "C" void cblas_saxpy(const int, const float, const float*, const int, float *, const int);
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37 | #endif
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38 | using namespace std;
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39 |
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40 | template <template<class> class Perf_Analyzer, class Action>
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41 | BTL_DONT_INLINE void bench( int size_min, int size_max, int nb_point )
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42 | {
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43 | if (BtlConfig::skipAction(Action::name()))
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44 | return;
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45 |
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46 | string filename="bench_"+Action::name()+".dat";
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47 |
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48 | INFOS("starting " <<filename);
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49 |
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50 | // utilities
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51 |
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52 | std::vector<double> tab_mflops(nb_point);
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53 | std::vector<int> tab_sizes(nb_point);
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54 |
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55 | // matrices and vector size calculations
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56 | size_lin_log(nb_point,size_min,size_max,tab_sizes);
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57 |
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58 | std::vector<int> oldSizes;
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59 | std::vector<double> oldFlops;
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60 | bool hasOldResults = read_xy_file(filename, oldSizes, oldFlops, true);
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61 | int oldi = oldSizes.size() - 1;
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62 |
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63 | // loop on matrix size
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64 | Perf_Analyzer<Action> perf_action;
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65 | for (int i=nb_point-1;i>=0;i--)
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66 | {
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67 | //INFOS("size=" <<tab_sizes[i]<<" ("<<nb_point-i<<"/"<<nb_point<<")");
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68 | std::cout << " " << "size = " << tab_sizes[i] << " " << std::flush;
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69 |
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70 | BTL_DISABLE_SSE_EXCEPTIONS();
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71 | #ifdef HAVE_MKL
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72 | {
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73 | float dummy;
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74 | cblas_saxpy(1,0,&dummy,1,&dummy,1);
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75 | }
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76 | #endif
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77 |
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78 | tab_mflops[i] = perf_action.eval_mflops(tab_sizes[i]);
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79 | std::cout << tab_mflops[i];
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80 |
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81 | if (hasOldResults)
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82 | {
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83 | while (oldi>=0 && oldSizes[oldi]>tab_sizes[i])
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84 | --oldi;
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85 | if (oldi>=0 && oldSizes[oldi]==tab_sizes[i])
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86 | {
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87 | if (oldFlops[oldi]<tab_mflops[i])
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88 | std::cout << "\t > ";
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89 | else
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90 | std::cout << "\t < ";
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91 | std::cout << oldFlops[oldi];
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92 | }
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93 | --oldi;
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94 | }
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95 | std::cout << " MFlops (" << nb_point-i << "/" << nb_point << ")" << std::endl;
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96 | }
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97 |
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98 | if (!BtlConfig::Instance.overwriteResults)
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99 | {
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100 | if (hasOldResults)
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101 | {
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102 | // merge the two data
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103 | std::vector<int> newSizes;
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104 | std::vector<double> newFlops;
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105 | int i=0;
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106 | int j=0;
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107 | while (i<tab_sizes.size() && j<oldSizes.size())
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108 | {
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109 | if (tab_sizes[i] == oldSizes[j])
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110 | {
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111 | newSizes.push_back(tab_sizes[i]);
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112 | newFlops.push_back(std::max(tab_mflops[i], oldFlops[j]));
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113 | ++i;
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114 | ++j;
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115 | }
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116 | else if (tab_sizes[i] < oldSizes[j])
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117 | {
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118 | newSizes.push_back(tab_sizes[i]);
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119 | newFlops.push_back(tab_mflops[i]);
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120 | ++i;
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121 | }
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122 | else
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123 | {
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124 | newSizes.push_back(oldSizes[j]);
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125 | newFlops.push_back(oldFlops[j]);
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126 | ++j;
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127 | }
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128 | }
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129 | while (i<tab_sizes.size())
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130 | {
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131 | newSizes.push_back(tab_sizes[i]);
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132 | newFlops.push_back(tab_mflops[i]);
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133 | ++i;
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134 | }
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135 | while (j<oldSizes.size())
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136 | {
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137 | newSizes.push_back(oldSizes[j]);
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138 | newFlops.push_back(oldFlops[j]);
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139 | ++j;
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140 | }
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141 | tab_mflops = newFlops;
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142 | tab_sizes = newSizes;
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143 | }
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144 | }
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145 |
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146 | // dump the result in a file :
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147 | dump_xy_file(tab_sizes,tab_mflops,filename);
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148 |
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149 | }
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150 |
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151 | // default Perf Analyzer
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152 |
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153 | template <class Action>
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154 | BTL_DONT_INLINE void bench( int size_min, int size_max, int nb_point ){
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155 |
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156 | // if the rdtsc is not available :
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157 | bench<Portable_Perf_Analyzer,Action>(size_min,size_max,nb_point);
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158 | // if the rdtsc is available :
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159 | // bench<Mixed_Perf_Analyzer,Action>(size_min,size_max,nb_point);
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160 |
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161 |
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162 | // Only for small problem size. Otherwize it will be too long
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163 | // bench<X86_Perf_Analyzer,Action>(size_min,size_max,nb_point);
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164 | // bench<STL_Perf_Analyzer,Action>(size_min,size_max,nb_point);
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165 |
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166 | }
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167 |
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168 | #endif
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