1 //===================================================== 2 // File : bench.hh 3 // Author : L. Plagne <laurent.plagne (at) edf.fr)> 4 // Copyright (C) EDF R&D, lun sep 30 14:23:16 CEST 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 BENCH_HH 21 #define BENCH_HH 22 23 #include "btl.hh" 24 #include "bench_parameter.hh" 25 #include <iostream> 26 #include "utilities.h" 27 #include "size_lin_log.hh" 28 #include "xy_file.hh" 29 #include <vector> 30 #include <string> 31 #include "timers/portable_perf_analyzer.hh" 32 // #include "timers/mixed_perf_analyzer.hh" 33 // #include "timers/x86_perf_analyzer.hh" 34 // #include "timers/STL_perf_analyzer.hh" 35 #ifdef HAVE_MKL 36 extern "C" void cblas_saxpy(const int, const float, const float*, const int, float *, const int); 37 #endif 38 using namespace std; 39 40 template <template<class> class Perf_Analyzer, class Action> 41 BTL_DONT_INLINE void bench( int size_min, int size_max, int nb_point ) 42 { 43 if (BtlConfig::skipAction(Action::name())) 44 return; 45 46 string filename="bench_"+Action::name()+".dat"; 47 48 INFOS("starting " <<filename); 49 50 // utilities 51 52 std::vector<double> tab_mflops(nb_point); 53 std::vector<int> tab_sizes(nb_point); 54 55 // matrices and vector size calculations 56 size_lin_log(nb_point,size_min,size_max,tab_sizes); 57 58 std::vector<int> oldSizes; 59 std::vector<double> oldFlops; 60 bool hasOldResults = read_xy_file(filename, oldSizes, oldFlops, true); 61 int oldi = oldSizes.size() - 1; 62 63 // loop on matrix size 64 Perf_Analyzer<Action> perf_action; 65 for (int i=nb_point-1;i>=0;i--) 66 { 67 //INFOS("size=" <<tab_sizes[i]<<" ("<<nb_point-i<<"/"<<nb_point<<")"); 68 std::cout << " " << "size = " << tab_sizes[i] << " " << std::flush; 69 70 BTL_DISABLE_SSE_EXCEPTIONS(); 71 #ifdef HAVE_MKL 72 { 73 float dummy; 74 cblas_saxpy(1,0,&dummy,1,&dummy,1); 75 } 76 #endif 77 78 tab_mflops[i] = perf_action.eval_mflops(tab_sizes[i]); 79 std::cout << tab_mflops[i]; 80 81 if (hasOldResults) 82 { 83 while (oldi>=0 && oldSizes[oldi]>tab_sizes[i]) 84 --oldi; 85 if (oldi>=0 && oldSizes[oldi]==tab_sizes[i]) 86 { 87 if (oldFlops[oldi]<tab_mflops[i]) 88 std::cout << "\t > "; 89 else 90 std::cout << "\t < "; 91 std::cout << oldFlops[oldi]; 92 } 93 --oldi; 94 } 95 std::cout << " MFlops (" << nb_point-i << "/" << nb_point << ")" << std::endl; 96 } 97 98 if (!BtlConfig::Instance.overwriteResults) 99 { 100 if (hasOldResults) 101 { 102 // merge the two data 103 std::vector<int> newSizes; 104 std::vector<double> newFlops; 105 int i=0; 106 int j=0; 107 while (i<tab_sizes.size() && j<oldSizes.size()) 108 { 109 if (tab_sizes[i] == oldSizes[j]) 110 { 111 newSizes.push_back(tab_sizes[i]); 112 newFlops.push_back(std::max(tab_mflops[i], oldFlops[j])); 113 ++i; 114 ++j; 115 } 116 else if (tab_sizes[i] < oldSizes[j]) 117 { 118 newSizes.push_back(tab_sizes[i]); 119 newFlops.push_back(tab_mflops[i]); 120 ++i; 121 } 122 else 123 { 124 newSizes.push_back(oldSizes[j]); 125 newFlops.push_back(oldFlops[j]); 126 ++j; 127 } 128 } 129 while (i<tab_sizes.size()) 130 { 131 newSizes.push_back(tab_sizes[i]); 132 newFlops.push_back(tab_mflops[i]); 133 ++i; 134 } 135 while (j<oldSizes.size()) 136 { 137 newSizes.push_back(oldSizes[j]); 138 newFlops.push_back(oldFlops[j]); 139 ++j; 140 } 141 tab_mflops = newFlops; 142 tab_sizes = newSizes; 143 } 144 } 145 146 // dump the result in a file : 147 dump_xy_file(tab_sizes,tab_mflops,filename); 148 149 } 150 151 // default Perf Analyzer 152 153 template <class Action> 154 BTL_DONT_INLINE void bench( int size_min, int size_max, int nb_point ){ 155 156 // if the rdtsc is not available : 157 bench<Portable_Perf_Analyzer,Action>(size_min,size_max,nb_point); 158 // if the rdtsc is available : 159 // bench<Mixed_Perf_Analyzer,Action>(size_min,size_max,nb_point); 160 161 162 // Only for small problem size. Otherwize it will be too long 163 // bench<X86_Perf_Analyzer,Action>(size_min,size_max,nb_point); 164 // bench<STL_Perf_Analyzer,Action>(size_min,size_max,nb_point); 165 166 } 167 168 #endif 169
