x86_perf_analyzer.hh
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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 
26 template<class ACTION>
28 public:
29  X86_Perf_Analyzer( unsigned long long nb_sample=DEFAULT_NB_SAMPLE):_nb_sample(nb_sample),_chronos()
30  {
31  MESSAGE("X86_Perf_Analyzer Ctor");
33  };
35  INFOS("Copy Ctor not implemented");
36  exit(0);
37  };
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();
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();
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 
98 private:
99 
101  unsigned long long _nb_sample;
102 
103 
104 };
105 
106 
107 
108 #endif
unsigned long long _nb_sample
X86_Perf_Analyzer(unsigned long long nb_sample=DEFAULT_NB_SAMPLE)
double frequency(void)
Definition: x86_timer.hh:67
Scalar Scalar int size
Definition: benchVecAdd.cpp:17
X86_Perf_Analyzer(const X86_Perf_Analyzer &)
void clear(void)
Definition: x86_timer.hh:204
void find_frequency(void)
Definition: x86_timer.hh:84
#define DEFAULT_NB_SAMPLE
void start(void)
Definition: x86_timer.hh:53
double get_shortest_clicks(void)
Definition: x86_timer.hh:169
void add_get_click(void)
Definition: x86_timer.hh:111
double eval_mflops(int size)
void stop(void)
Definition: x86_timer.hh:60
std::ptrdiff_t j


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autogenerated on Tue Jul 4 2023 02:40:46