169 lines
4.7 KiB
C++
169 lines
4.7 KiB
C++
//=====================================================
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// File : bench.hh
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// Author : L. Plagne <laurent.plagne@edf.fr)>
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// Copyright (C) EDF R&D, lun sep 30 14:23:16 CEST 2002
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//=====================================================
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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#ifndef BENCH_HH
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#define BENCH_HH
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#include "btl.hh"
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#include "bench_parameter.hh"
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#include <iostream>
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#include "utilities.h"
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#include "size_lin_log.hh"
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#include "xy_file.hh"
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#include <vector>
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#include <string>
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#include "timers/portable_perf_analyzer.hh"
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// #include "timers/mixed_perf_analyzer.hh"
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// #include "timers/x86_perf_analyzer.hh"
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// #include "timers/STL_perf_analyzer.hh"
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#ifdef HAVE_MKL
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extern "C" void cblas_saxpy(const int, const float, const float*, const int, float *, const int);
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#endif
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using namespace std;
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template <template<class> class Perf_Analyzer, class Action>
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BTL_DONT_INLINE void bench( int size_min, int size_max, int nb_point )
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{
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if (BtlConfig::skipAction(Action::name()))
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return;
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string filename="bench_"+Action::name()+".dat";
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INFOS("starting " <<filename);
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// utilities
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std::vector<double> tab_mflops(nb_point);
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std::vector<int> tab_sizes(nb_point);
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// matrices and vector size calculations
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size_lin_log(nb_point,size_min,size_max,tab_sizes);
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std::vector<int> oldSizes;
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std::vector<double> oldFlops;
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bool hasOldResults = read_xy_file(filename, oldSizes, oldFlops, true);
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int oldi = oldSizes.size() - 1;
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// loop on matrix size
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Perf_Analyzer<Action> perf_action;
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for (int i=nb_point-1;i>=0;i--)
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{
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//INFOS("size=" <<tab_sizes[i]<<" ("<<nb_point-i<<"/"<<nb_point<<")");
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std::cout << " " << "size = " << tab_sizes[i] << " " << std::flush;
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BTL_DISABLE_SSE_EXCEPTIONS();
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#ifdef HAVE_MKL
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{
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float dummy;
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cblas_saxpy(1,0,&dummy,1,&dummy,1);
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}
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#endif
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tab_mflops[i] = perf_action.eval_mflops(tab_sizes[i]);
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std::cout << tab_mflops[i];
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if (hasOldResults)
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{
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while (oldi>=0 && oldSizes[oldi]>tab_sizes[i])
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--oldi;
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if (oldi>=0 && oldSizes[oldi]==tab_sizes[i])
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{
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if (oldFlops[oldi]<tab_mflops[i])
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std::cout << "\t > ";
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else
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std::cout << "\t < ";
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std::cout << oldFlops[oldi];
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}
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--oldi;
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}
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std::cout << " MFlops (" << nb_point-i << "/" << nb_point << ")" << std::endl;
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}
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if (!BtlConfig::Instance.overwriteResults)
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{
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if (hasOldResults)
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{
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// merge the two data
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std::vector<int> newSizes;
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std::vector<double> newFlops;
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int i=0;
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int j=0;
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while (i<tab_sizes.size() && j<oldSizes.size())
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{
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if (tab_sizes[i] == oldSizes[j])
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{
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newSizes.push_back(tab_sizes[i]);
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newFlops.push_back(std::max(tab_mflops[i], oldFlops[j]));
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++i;
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++j;
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}
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else if (tab_sizes[i] < oldSizes[j])
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{
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newSizes.push_back(tab_sizes[i]);
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newFlops.push_back(tab_mflops[i]);
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++i;
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}
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else
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{
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newSizes.push_back(oldSizes[j]);
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newFlops.push_back(oldFlops[j]);
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++j;
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}
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}
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while (i<tab_sizes.size())
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{
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newSizes.push_back(tab_sizes[i]);
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newFlops.push_back(tab_mflops[i]);
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++i;
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}
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while (j<oldSizes.size())
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{
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newSizes.push_back(oldSizes[j]);
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newFlops.push_back(oldFlops[j]);
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++j;
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}
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tab_mflops = newFlops;
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tab_sizes = newSizes;
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}
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}
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// dump the result in a file :
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dump_xy_file(tab_sizes,tab_mflops,filename);
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}
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// default Perf Analyzer
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template <class Action>
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BTL_DONT_INLINE void bench( int size_min, int size_max, int nb_point ){
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// if the rdtsc is not available :
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bench<Portable_Perf_Analyzer,Action>(size_min,size_max,nb_point);
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// if the rdtsc is available :
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// bench<Mixed_Perf_Analyzer,Action>(size_min,size_max,nb_point);
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// Only for small problem size. Otherwize it will be too long
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// bench<X86_Perf_Analyzer,Action>(size_min,size_max,nb_point);
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// bench<STL_Perf_Analyzer,Action>(size_min,size_max,nb_point);
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}
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#endif
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