1 //---------------------------------------------------------------------------//
2 // Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@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 <cstdlib>
13 #include <iostream>
14 
15 #include <thrust/copy.h>
16 #include <thrust/device_vector.h>
17 #include <thrust/generate.h>
18 #include <thrust/host_vector.h>
19 #include <thrust/unique.h>
20 
21 #include "perf.hpp"
22 
rand_int()23 int rand_int()
24 {
25     return static_cast<int>((rand() / double(RAND_MAX)) * 25.0);
26 }
27 
main(int argc,char * argv[])28 int main(int argc, char *argv[])
29 {
30     perf_parse_args(argc, argv);
31 
32     std::cout << "size: " << PERF_N << std::endl;
33     thrust::host_vector<int> h_vec(PERF_N);
34     std::generate(h_vec.begin(), h_vec.end(), rand_int);
35 
36     thrust::device_vector<int> d_vec(PERF_N);
37 
38     perf_timer t;
39     for(size_t trial = 0; trial < PERF_TRIALS; trial++){
40         d_vec = h_vec;
41 
42         t.start();
43         thrust::unique(d_vec.begin(), d_vec.end());
44         cudaDeviceSynchronize();
45         t.stop();
46     }
47     std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
48 
49     return 0;
50 }
51