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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/timer/timer.hpp>
#include <boost/compute/system.hpp>
#include <boost/compute/command_queue.hpp>
#include <boost/compute/algorithm/sort.hpp>
#include <boost/compute/container/vector.hpp>
#include "perf.hpp"
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<int> random_vector(PERF_N);
std::generate(random_vector.begin(), random_vector.end(), rand);
// create input vector for gpu
std::vector<int> gpu_vector = random_vector;
// sort vector on gpu
boost::timer::cpu_timer t;
boost::compute::sort(
gpu_vector.begin(), gpu_vector.end(), queue
);
queue.finish();
std::cout << "time: " << t.elapsed().wall / 1e6 << " ms" << std::endl;
// create input vector for host
std::vector<int> host_vector = random_vector;
// sort vector on host
t.start();
std::sort(host_vector.begin(), host_vector.end());
std::cout << "host time: " << t.elapsed().wall / 1e6 << " ms" << std::endl;
// ensure that both sorted vectors are equal
if(!std::equal(gpu_vector.begin(), gpu_vector.end(), host_vector.begin())){
std::cerr << "ERROR: sorted vectors not the same" << std::endl;
return -1;
}
return 0;
}
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