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 <iostream>
13 #include <vector>
14
15 #include <boost/compute/system.hpp>
16 #include <boost/compute/algorithm/is_sorted.hpp>
17 #include <boost/compute/algorithm/sort.hpp>
18 #include <boost/compute/container/vector.hpp>
19
20 #include "perf.hpp"
21
rand_float()22 float rand_float()
23 {
24 return ((rand() / float(RAND_MAX)) - 0.5f) * 100000.0f;
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<float> host_vector(PERF_N);
40 std::generate(host_vector.begin(), host_vector.end(), rand_float);
41
42 // create vector on the device and copy the data
43 boost::compute::vector<float> device_vector(PERF_N, context);
44 boost::compute::copy(
45 host_vector.begin(),
46 host_vector.end(),
47 device_vector.begin(),
48 queue
49 );
50
51 // sort vector
52 perf_timer t;
53 t.start();
54 boost::compute::sort(
55 device_vector.begin(),
56 device_vector.end(),
57 queue
58 );
59 queue.finish();
60 t.stop();
61 std::cout << "time: " << t.last_time() / 1e6 << " ms" << std::endl;
62
63 // verify vector is sorted
64 if(!boost::compute::is_sorted(device_vector.begin(),
65 device_vector.end(),
66 queue)){
67 std::cout << "ERROR: is_sorted() returned false" << std::endl;
68 return -1;
69 }
70
71 return 0;
72 }
73