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109 lines
2.9 KiB
C++
109 lines
2.9 KiB
C++
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//=====================================================
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// File : x86_perf_analyzer.hh
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// Author : L. Plagne <laurent.plagne@edf.fr)>
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// Copyright (C) EDF R&D, mar d<>c 3 18:59:35 CET 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 _X86_PERF_ANALYSER_HH
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#define _X86_PERF_ANALYSER_HH
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#include "x86_timer.hh"
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#include "bench_parameter.hh"
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template<class ACTION>
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class X86_Perf_Analyzer{
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public:
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X86_Perf_Analyzer( unsigned long long nb_sample=DEFAULT_NB_SAMPLE):_nb_sample(nb_sample),_chronos()
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{
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MESSAGE("X86_Perf_Analyzer Ctor");
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_chronos.find_frequency();
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};
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X86_Perf_Analyzer( const X86_Perf_Analyzer & ){
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INFOS("Copy Ctor not implemented");
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exit(0);
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};
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~X86_Perf_Analyzer( void ){
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MESSAGE("X86_Perf_Analyzer Dtor");
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};
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inline double eval_mflops(int size)
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{
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ACTION action(size);
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int nb_loop=5;
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double calculate_time=0.0;
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double baseline_time=0.0;
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for (int j=0 ; j < nb_loop ; j++){
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_chronos.clear();
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for(int i=0 ; i < _nb_sample ; i++)
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{
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_chronos.start();
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action.initialize();
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action.calculate();
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_chronos.stop();
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_chronos.add_get_click();
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}
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calculate_time += double(_chronos.get_shortest_clicks())/_chronos.frequency();
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if (j==0) action.check_result();
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_chronos.clear();
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for(int i=0 ; i < _nb_sample ; i++)
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{
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_chronos.start();
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action.initialize();
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_chronos.stop();
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_chronos.add_get_click();
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}
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baseline_time+=double(_chronos.get_shortest_clicks())/_chronos.frequency();
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}
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double corrected_time = (calculate_time-baseline_time)/double(nb_loop);
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// INFOS("_nb_sample="<<_nb_sample);
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// INFOS("baseline_time="<<baseline_time);
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// INFOS("calculate_time="<<calculate_time);
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// INFOS("corrected_time="<<corrected_time);
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// cout << size <<" "<<baseline_time<<" "<<calculate_time<<" "<<corrected_time<<" "<<action.nb_op_base() << endl;
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return action.nb_op_base()/(corrected_time*1000000.0);
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//return action.nb_op_base()/(calculate_time*1000000.0);
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}
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private:
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X86_Timer _chronos;
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unsigned long long _nb_sample;
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};
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#endif
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