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/timer/timer.hpp>
16
17 #include <boost/compute/system.hpp>
18 #include <boost/compute/command_queue.hpp>
19 #include <boost/compute/algorithm/sort.hpp>
20 #include <boost/compute/container/vector.hpp>
21
22 #include "perf.hpp"
23
main(int argc,char * argv[])24 int main(int argc, char *argv[])
25 {
26 perf_parse_args(argc, argv);
27 std::cout << "size: " << PERF_N << std::endl;
28
29 // setup context and queue for the default device
30 boost::compute::device device = boost::compute::system::default_device();
31 boost::compute::context context(device);
32 boost::compute::command_queue queue(context, device);
33 std::cout << "device: " << device.name() << std::endl;
34
35 // create vector of random numbers on the host
36 std::vector<int> random_vector(PERF_N);
37 std::generate(random_vector.begin(), random_vector.end(), rand);
38
39 // create input vector for gpu
40 std::vector<int> gpu_vector = random_vector;
41
42 // sort vector on gpu
43 boost::timer::cpu_timer t;
44 boost::compute::sort(
45 gpu_vector.begin(), gpu_vector.end(), queue
46 );
47 queue.finish();
48 std::cout << "time: " << t.elapsed().wall / 1e6 << " ms" << std::endl;
49
50 // create input vector for host
51 std::vector<int> host_vector = random_vector;
52
53 // sort vector on host
54 t.start();
55 std::sort(host_vector.begin(), host_vector.end());
56 std::cout << "host time: " << t.elapsed().wall / 1e6 << " ms" << std::endl;
57
58 // ensure that both sorted vectors are equal
59 if(!std::equal(gpu_vector.begin(), gpu_vector.end(), host_vector.begin())){
60 std::cerr << "ERROR: sorted vectors not the same" << std::endl;
61 return -1;
62 }
63
64 return 0;
65 }
66