1 //---------------------------------------------------------------------------//
2 // Copyright (c) 2015 Jakub Szuppe <j.szuppe@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 <algorithm>
13 #include <vector>
14
15 #include <bolt/cl/scan.h>
16 #include <bolt/cl/copy.h>
17 #include <bolt/cl/device_vector.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
27 bolt::cl::control ctrl = bolt::cl::control::getDefault();
28 ::cl::Device device = ctrl.getDevice();
29 std::cout << "device: " << device.getInfo<CL_DEVICE_NAME>() << std::endl;
30
31 // create vector of random numbers on the host
32 std::vector<int> h_vec = generate_random_vector<int>(PERF_N);
33
34 // create device vector
35 bolt::cl::device_vector<int> d_vec(PERF_N);
36
37 perf_timer t;
38 for(size_t trial = 0; trial < PERF_TRIALS; trial++){
39 // transfer data to the device
40 bolt::cl::copy(h_vec.begin(), h_vec.end(), d_vec.begin());
41
42 t.start();
43 bolt::cl::inclusive_scan(d_vec.begin(), d_vec.end(), d_vec.begin());
44 t.stop();
45 }
46 std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
47
48 // transfer data back to host
49 bolt::cl::copy(d_vec.begin(), d_vec.end(), h_vec.begin());
50
51 return 0;
52 }
53
54