1 | // -*- C++ -*- |
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2 | /*************************************************************************** |
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3 | * blitz/bench.h Benchmark classes |
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4 | * |
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5 | * $Id$ |
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6 | * |
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7 | * Copyright (C) 1997-2011 Todd Veldhuizen <tveldhui@acm.org> |
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8 | * |
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9 | * This file is a part of Blitz. |
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10 | * |
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11 | * Blitz is free software: you can redistribute it and/or modify |
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12 | * it under the terms of the GNU Lesser General Public License |
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13 | * as published by the Free Software Foundation, either version 3 |
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14 | * of the License, or (at your option) any later version. |
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15 | * |
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16 | * Blitz is distributed in the hope that it will be useful, |
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17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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19 | * GNU Lesser General Public License for more details. |
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20 | * |
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21 | * You should have received a copy of the GNU Lesser General Public |
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22 | * License along with Blitz. If not, see <http://www.gnu.org/licenses/>. |
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23 | * |
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24 | * Suggestions: blitz-devel@lists.sourceforge.net |
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25 | * Bugs: blitz-support@lists.sourceforge.net |
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26 | * |
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27 | * For more information, please see the Blitz++ Home Page: |
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28 | * https://sourceforge.net/projects/blitz/ |
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29 | * |
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30 | ***************************************************************************/ |
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31 | |
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32 | #ifndef BZ_BENCH_H |
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33 | #define BZ_BENCH_H |
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34 | |
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35 | #include <blitz/matrix.h> |
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36 | #include <blitz/timer.h> |
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37 | |
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38 | #if defined(BZ_HAVE_STD) |
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39 | #include <cmath> |
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40 | #else |
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41 | #include <math.h> |
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42 | #endif |
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43 | |
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44 | BZ_NAMESPACE(blitz) |
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45 | |
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46 | // Forward declaration |
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47 | template<typename P_parameter = unsigned> |
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48 | class BenchmarkImplementation; |
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49 | |
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50 | |
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51 | // Declaration of class Benchmark<T> |
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52 | // The template parameter T is the parameter type which is varied in |
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53 | // the benchmark. Typically T will be an unsigned, and will represent |
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54 | // the length of a vector, size of an array, etc. |
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55 | |
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56 | template<typename P_parameter = unsigned> |
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57 | class Benchmark { |
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58 | |
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59 | public: |
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60 | typedef P_parameter T_parameter; |
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61 | |
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62 | Benchmark(unsigned numImplementations); |
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63 | |
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64 | ~Benchmark(); |
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65 | |
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66 | void addImplementation(BenchmarkImplementation<T_parameter>* |
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67 | implementation); |
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68 | |
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69 | void run(ostream& log = cout); |
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70 | |
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71 | double getMflops(unsigned implementation, unsigned setting) const; |
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72 | |
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73 | double getRate(unsigned implementation, unsigned setting) const; |
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74 | |
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75 | void saveMatlabGraph(const char* filename) const; |
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76 | void savePylabGraph(const char* filename) const; |
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77 | |
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78 | public: |
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79 | // Virtual functions |
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80 | |
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81 | virtual const char* description() const |
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82 | { return ""; } |
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83 | |
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84 | virtual const char* parameterDescription() const |
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85 | { return "Vector length"; } |
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86 | |
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87 | virtual unsigned numParameterSettings() const |
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88 | { return 19; } |
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89 | |
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90 | virtual T_parameter getParameterSetting(unsigned i) const |
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91 | { return BZ_MATHFN_SCOPE(pow)(10.0, (i+1)/4.0); } |
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92 | |
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93 | virtual long getIterationSetting(unsigned i) const |
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94 | { return 1000000L / getParameterSetting(i); } |
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95 | |
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96 | private: |
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97 | Benchmark(const Benchmark<P_parameter>&) { } |
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98 | void operator=(const Benchmark<P_parameter>&) { } |
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99 | |
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100 | enum { uninitialized, initialized, running, done } state_; |
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101 | |
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102 | unsigned numImplementations_; |
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103 | unsigned numStoredImplementations_; |
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104 | |
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105 | BenchmarkImplementation<T_parameter>** implementations_; |
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106 | |
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107 | Matrix<double,RowMajor> rates_; // Iterations per second array |
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108 | Matrix<double,RowMajor> Mflops_; |
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109 | }; |
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110 | |
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111 | template<typename P_parameter> |
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112 | class BenchmarkImplementation { |
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113 | |
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114 | public: |
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115 | typedef P_parameter T_parameter; |
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116 | |
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117 | virtual void initialize(P_parameter parameter) { } |
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118 | |
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119 | virtual void done() { } |
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120 | |
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121 | virtual const char* implementationName() const |
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122 | { return ""; } |
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123 | |
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124 | virtual void run(long iterations) = 0; |
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125 | |
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126 | virtual void runOverhead(long iterations) |
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127 | { |
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128 | for (long i=0; i < iterations; ++i) |
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129 | { |
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130 | } |
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131 | }; |
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132 | |
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133 | virtual void tickle() { } |
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134 | |
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135 | virtual long flopsPerIteration() const |
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136 | { return 0; } |
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137 | }; |
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138 | |
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139 | BZ_NAMESPACE_END |
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140 | |
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141 | #include <blitz/bench.cc> |
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142 | |
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143 | #endif // BZ_BENCH_H |
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