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 <iostream>
12 #include <iterator>
13 #include <algorithm>
14
15 #include <thrust/device_vector.h>
16 #include <thrust/host_vector.h>
17 #include <thrust/inner_product.h>
18
19 #include "perf.hpp"
20
main(int argc,char * argv[])21 int main(int argc, char *argv[])
22 {
23 perf_parse_args(argc, argv);
24
25 std::cout << "size: " << PERF_N << std::endl;
26 thrust::host_vector<int> host_x(PERF_N);
27 thrust::host_vector<int> host_y(PERF_N);
28 std::generate(host_x.begin(), host_x.end(), rand);
29 std::generate(host_y.begin(), host_y.end(), rand);
30
31 // transfer data to the device
32 thrust::device_vector<int> device_x = host_x;
33 thrust::device_vector<int> device_y = host_y;
34
35 int product = 0;
36 perf_timer t;
37 for(size_t trial = 0; trial < PERF_TRIALS; trial++){
38 t.start();
39 product = thrust::inner_product(
40 device_x.begin(), device_x.end(), device_y.begin(), 0
41 );
42 cudaDeviceSynchronize();
43 t.stop();
44 }
45 std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
46 std::cout << "product: " << product << std::endl;
47
48 return 0;
49 }
50