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/count.h>
16 #include <bolt/cl/copy.h>
17 #include <bolt/cl/device_vector.h>
18
19 #include "perf.hpp"
20
rand_int()21 int rand_int()
22 {
23 return static_cast<int>((rand() / double(RAND_MAX)) * 25.0);
24 }
25
main(int argc,char * argv[])26 int main(int argc, char *argv[])
27 {
28 perf_parse_args(argc, argv);
29
30 std::cout << "size: " << PERF_N << std::endl;
31
32 bolt::cl::control ctrl = bolt::cl::control::getDefault();
33 ::cl::Device device = ctrl.getDevice();
34 std::cout << "device: " << device.getInfo<CL_DEVICE_NAME>() << std::endl;
35
36 // create vector of random numbers on the host
37 std::vector<int> h_vec(PERF_N);
38 std::generate(h_vec.begin(), h_vec.end(), rand_int);
39
40 // create device vector
41 bolt::cl::device_vector<int> d_vec(PERF_N);
42
43 // transfer data to the device
44 bolt::cl::copy(h_vec.begin(), h_vec.end(), d_vec.begin());
45
46 size_t count = 0;
47 perf_timer t;
48 for(size_t trial = 0; trial < PERF_TRIALS; trial++){
49 t.start();
50 count = bolt::cl::count(ctrl, d_vec.begin(), d_vec.end(), 4);
51 t.stop();
52 }
53 std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
54 std::cout << "count: " << count << std::endl;
55
56 return 0;
57 }
58