bench.hh
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1 //=====================================================
2 // File : bench.hh
3 // Author : L. Plagne <laurent.plagne@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>
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 {
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 
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  unsigned int i=0;
106  unsigned 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. Otherwise 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
#define max(a, b)
Definition: datatypes.h:20
#define BTL_DONT_INLINE
Definition: btl.hh:38
bool read_xy_file(const std::string &filename, std::vector< int > &tab_sizes, std::vector< double > &tab_mflops, bool quiet=false)
Definition: xy_file.hh:28
Definition: BFloat16.h:88
void size_lin_log(const int nb_point, const int, const int size_max, Vector &X)
Definition: size_lin_log.hh:26
static BTL_DONT_INLINE bool skipAction(const std::string &_name)
Definition: btl.hh:216
void dump_xy_file(const Vector_A &X, const Vector_B &Y, const std::string &filename)
Definition: xy_file.hh:64
#define BTL_DISABLE_SSE_EXCEPTIONS()
Definition: btl.hh:52
std::ptrdiff_t j
static BtlConfig Instance
Definition: btl.hh:229
BTL_DONT_INLINE void bench(int size_min, int size_max, int nb_point)
Definition: bench.hh:41


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autogenerated on Tue Jul 4 2023 02:33:57