1 //---------------------------------------------------------------------------//
2 // Copyright (c) 2014 Roshan <thisisroshansmail@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 <numeric>
14 #include <vector>
15
16 #include <boost/compute/system.hpp>
17 #include <boost/compute/algorithm/is_permutation.hpp>
18 #include <boost/compute/container/vector.hpp>
19
20 #include "perf.hpp"
21
rand_int()22 int rand_int()
23 {
24 return static_cast<int>((rand() / double(RAND_MAX)) * 25.0);
25 }
26
main(int argc,char * argv[])27 int main(int argc, char *argv[])
28 {
29 perf_parse_args(argc, argv);
30 std::cout << "size: " << PERF_N << std::endl;
31
32 // setup context and queue for the default device
33 boost::compute::device device = boost::compute::system::default_device();
34 boost::compute::context context(device);
35 boost::compute::command_queue queue(context, device);
36 std::cout << "device: " << device.name() << std::endl;
37
38 // create vector of random numbers on the host
39 std::vector<int> host_vector(PERF_N);
40 std::generate(host_vector.begin(), host_vector.end(), rand_int);
41
42 // create vector on the device and copy the data
43 boost::compute::vector<int> device_vector(PERF_N, context);
44 boost::compute::copy(
45 host_vector.begin(), host_vector.end(), device_vector.begin(), queue
46 );
47
48 boost::compute::vector<int> device_vector2(PERF_N, context);
49 boost::compute::copy(
50 host_vector.rbegin(), host_vector.rend(), device_vector2.begin(), queue
51 );
52
53 perf_timer t;
54 for(size_t trial = 0; trial < PERF_TRIALS; trial++){
55 t.start();
56 boost::compute::is_permutation(
57 device_vector.begin(), device_vector.end(),
58 device_vector2.begin(), device_vector2.end(), queue
59 );
60 queue.finish();
61 t.stop();
62 }
63 std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
64
65 return 0;
66 }
67