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>
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>
bench(int size_min,int size_max,int nb_point)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 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>
bench(int size_min,int size_max,int nb_point)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