1 //---------------------------------------------------------------------------//
2 // Copyright (c) 2016 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 <algorithm>
12 #include <iostream>
13 #include <vector>
14
15 #include <boost/program_options.hpp>
16
17 #include <boost/compute/system.hpp>
18 #include <boost/compute/algorithm/sort.hpp>
19 #include <boost/compute/algorithm/is_sorted.hpp>
20 #include <boost/compute/container/vector.hpp>
21
22 #include "perf.hpp"
23
24 namespace po = boost::program_options;
25 namespace compute = boost::compute;
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 using boost::compute::int_;
39
40 // create vector of random numbers on the host
41 std::vector<int_> host_vector(PERF_N);
42 std::generate(host_vector.begin(), host_vector.end(), rand);
43
44 // create vector on the device and copy the data
45 boost::compute::vector<int_> device_vector(PERF_N, context);
46
47 // less function for float
48 BOOST_COMPUTE_FUNCTION(bool, comp, (int_ a, int_ b),
49 {
50 return a < b;
51 });
52
53 // sort vector
54 perf_timer t;
55 for(size_t trial = 0; trial < PERF_TRIALS; trial++){
56 boost::compute::copy(
57 host_vector.begin(),
58 host_vector.end(),
59 device_vector.begin(),
60 queue
61 );
62 queue.finish();
63
64 t.start();
65 boost::compute::sort(
66 device_vector.begin(),
67 device_vector.end(),
68 comp,
69 queue
70 );
71 queue.finish();
72 t.stop();
73 };
74 std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
75
76 // verify vector is sorted
77 if(!boost::compute::is_sorted(device_vector.begin(),
78 device_vector.end(),
79 comp,
80 queue)){
81 std::cout << "ERROR: is_sorted() returned false" << std::endl;
82 return -1;
83 }
84
85 return 0;
86 }
87