1 //---------------------------------------------------------------------------//
2 // Copyright (c) 2013-2014 Rastko Anicic <anicic.rastko@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 "perf.hpp"
16 
rand_int()17 int rand_int()
18 {
19     return static_cast<int>(rand() % 10000000);
20 }
21 
main(int argc,char * argv[])22 int main(int argc, char *argv[])
23 {
24     perf_parse_args(argc, argv);
25     std::cout << "size: " << PERF_N << std::endl;
26 
27     // create vector of random numbers on the host
28     std::vector<int> host_vector(PERF_N);
29     std::generate(host_vector.begin(), host_vector.end(), rand_int);
30 
31     int max = 0;
32 
33     perf_timer t;
34     for(size_t trial = 0; trial < PERF_TRIALS; trial++){
35         t.start();
36         max = *(std::max_element(host_vector.begin(), host_vector.end()));
37         t.stop();
38     }
39     std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
40     std::cout << "max: " << max << std::endl;
41 
42     return 0;
43 }
44