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- //---------------------------------------------------------------------------//
- // Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
- //
- // Distributed under the Boost Software License, Version 1.0
- // See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt
- //
- // See http://boostorg.github.com/compute for more information.
- //---------------------------------------------------------------------------//
- #include <algorithm>
- #include <iostream>
- #include <vector>
- #include <boost/compute/system.hpp>
- #include <boost/compute/algorithm/is_sorted.hpp>
- #include <boost/compute/algorithm/sort.hpp>
- #include <boost/compute/container/vector.hpp>
- #include "perf.hpp"
- float rand_float()
- {
- return ((rand() / float(RAND_MAX)) - 0.5f) * 100000.0f;
- }
- int main(int argc, char *argv[])
- {
- perf_parse_args(argc, argv);
- std::cout << "size: " << PERF_N << std::endl;
- // setup context and queue for the default device
- boost::compute::device device = boost::compute::system::default_device();
- boost::compute::context context(device);
- boost::compute::command_queue queue(context, device);
- std::cout << "device: " << device.name() << std::endl;
- // create vector of random numbers on the host
- std::vector<float> host_vector(PERF_N);
- std::generate(host_vector.begin(), host_vector.end(), rand_float);
- // create vector on the device and copy the data
- boost::compute::vector<float> device_vector(PERF_N, context);
- boost::compute::copy(
- host_vector.begin(),
- host_vector.end(),
- device_vector.begin(),
- queue
- );
- // sort vector
- perf_timer t;
- t.start();
- boost::compute::sort(
- device_vector.begin(),
- device_vector.end(),
- queue
- );
- queue.finish();
- t.stop();
- std::cout << "time: " << t.last_time() / 1e6 << " ms" << std::endl;
- // verify vector is sorted
- if(!boost::compute::is_sorted(device_vector.begin(),
- device_vector.end(),
- queue)){
- std::cout << "ERROR: is_sorted() returned false" << std::endl;
- return -1;
- }
- return 0;
- }
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