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//---------------------------------------------------------------------------//
// Copyright (c) 2013 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/copy.hpp>
#include <boost/compute/algorithm/sort.hpp>
#include <boost/compute/container/vector.hpp>
namespace compute = boost::compute;
int rand_int()
{
return rand() % 100;
}
// this example demonstrates how to sort a vector of ints on the GPU
int main()
{
// create vector of random values on the host
std::vector<int> host_vector(10);
std::generate(host_vector.begin(), host_vector.end(), rand_int);
// print out input vector
std::cout << "input: [ ";
for(size_t i = 0; i < host_vector.size(); i++){
std::cout << host_vector[i];
if(i != host_vector.size() - 1){
std::cout << ", ";
}
}
std::cout << " ]" << std::endl;
// transfer the values to the device
compute::vector<int> device_vector = host_vector;
// sort the values on the device
compute::sort(device_vector.begin(), device_vector.end());
// transfer the values back to the host
compute::copy(device_vector.begin(),
device_vector.end(),
host_vector.begin());
// print out the sorted vector
std::cout << "output: [ ";
for(size_t i = 0; i < host_vector.size(); i++){
std::cout << host_vector[i];
if(i != host_vector.size() - 1){
std::cout << ", ";
}
}
std::cout << " ]" << std::endl;
return 0;
}