ceph/src/boost/libs/compute/perf/perf_uniform_int_distribution.cpp

   1 //---------------------------------------------------------------------------//
   2 // Copyright (c) 2014 Roshan <thisisroshansmail@gmail.com>
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 // See http://boostorg.github.com/compute for more information.
   9 //---------------------------------------------------------------------------//
  10
  11 #include <algorithm>
  12 #include <iostream>
  13 #include <vector>
  14
  15 #include <boost/compute/system.hpp>
  16 #include <boost/compute/container/vector.hpp>
  17 #include <boost/compute/random/default_random_engine.hpp>
  18 #include <boost/compute/random/uniform_int_distribution.hpp>
  19
  20 #include "perf.hpp"
  21
  22 namespace compute = boost::compute;
  23
  24 int main(int argc, char *argv[])
  25 {
  26     perf_parse_args(argc, argv);
  27     std::cout << "size: " << PERF_N << std::endl;
  28
  29     compute::device device = compute::system::default_device();
  30     compute::context context(device);
  31     compute::command_queue queue(context, device);
  32
  33     compute::vector<compute::uint_> vector(PERF_N, context);
  34
  35     compute::default_random_engine rng(queue);
  36     compute::uniform_int_distribution<compute::uint_> dist(0, 1);
  37
  38     perf_timer t;
  39     t.start();
  40     dist.generate(vector.begin(), vector.end(), rng, queue);
  41     queue.finish();
  42     t.stop();
  43     std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
  44
  45     return 0;
  46 }