[1022] | 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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