ceph/src/boost/libs/numeric/ublas/benchmarks/reference/add.cpp

   1 //
   2 // Copyright (c) 2018 Stefan Seefeld
   3 // All rights reserved.
   4 //
   5 // This file is part of Boost.uBLAS. It is made available under the
   6 // Boost Software License, Version 1.0.
   7 // (Consult LICENSE or http://www.boost.org/LICENSE_1_0.txt)
   8
   9 #include <boost/numeric/ublas/matrix.hpp>
  10 #include <boost/numeric/ublas/vector.hpp>
  11 #include <boost/program_options.hpp>
  12 #include "../init.hpp"
  13 #include "../benchmark.hpp"
  14 #include <complex>
  15 #include <string>
  16
  17 namespace po = boost::program_options;
  18 namespace ublas = boost::numeric::ublas;
  19 namespace boost { namespace numeric { namespace ublas { namespace benchmark {
  20
  21 template <typename T>
  22 class add : public benchmark
  23 {
  24 public:
  25   add(std::string const &name) : benchmark(name) {}
  26   virtual void setup(long l)
  27   {
  28     init(a, l, 200);
  29     init(b, l, 200);
  30   }
  31   virtual void operation(long l)
  32   {
  33     for (int i = 0; i < l; ++i)
  34       c(i) = a(i) + b(i);
  35   }
  36 private:
  37   ublas::vector<T> a;
  38   ublas::vector<T> b;
  39   ublas::vector<T> c;
  40 };
  41
  42 }}}}
  43
  44 namespace bm = boost::numeric::ublas::benchmark;
  45
  46 template <typename T>
  47 void benchmark(std::string const &type)
  48 {
  49   bm::add<T> p("ref::add(vector<" + type + ">)");
  50   p.run(std::vector<long>({1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096}));
  51 }
  52
  53 int main(int argc, char **argv)
  54 {
  55   po::variables_map vm;
  56   try
  57   {
  58     po::options_description desc("Vector-vector addition (reference implementation)\n"
  59                                  "Allowed options");
  60     desc.add_options()("help,h", "produce help message");
  61     desc.add_options()("type,t", po::value<std::string>(), "select value-type (float, double, fcomplex, dcomplex)");
  62
  63     po::store(po::parse_command_line(argc, argv, desc), vm);
  64     po::notify(vm);
  65
  66     if (vm.count("help"))
  67     {
  68       std::cout << desc << std::endl;
  69       return 0;
  70     }
  71   }
  72   catch(std::exception &e)
  73   {
  74     std::cerr << "error: " << e.what() << std::endl;
  75     return 1;
  76   }
  77   std::string type = vm.count("type") ? vm["type"].as<std::string>() : "float";
  78   if (type == "float")
  79     benchmark<float>("float");
  80   else if (type == "double")
  81     benchmark<double>("double");
  82   else if (type == "fcomplex")
  83     benchmark<std::complex<float>>("std::complex<float>");
  84   else if (type == "dcomplex")
  85     benchmark<std::complex<double>>("std::complex<double>");
  86   else
  87     std::cerr << "unsupported value-type \"" << vm["type"].as<std::string>() << '\"' << std::endl;
  88 }