69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
//---------------------------------------------------------------------------//
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// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://boostorg.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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#include <algorithm>
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#include <iostream>
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#include <vector>
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#include <boost/compute/system.hpp>
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#include <boost/compute/algorithm/copy.hpp>
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#include <boost/compute/algorithm/sort.hpp>
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#include <boost/compute/container/vector.hpp>
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namespace compute = boost::compute;
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int rand_int()
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{
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return rand() % 100;
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}
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// this example demonstrates how to sort a vector of ints on the GPU
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int main()
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{
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// create vector of random values on the host
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std::vector<int> host_vector(10);
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std::generate(host_vector.begin(), host_vector.end(), rand_int);
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// print out input vector
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std::cout << "input: [ ";
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for(size_t i = 0; i < host_vector.size(); i++){
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std::cout << host_vector[i];
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if(i != host_vector.size() - 1){
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std::cout << ", ";
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}
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}
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std::cout << " ]" << std::endl;
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// transfer the values to the device
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compute::vector<int> device_vector = host_vector;
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// sort the values on the device
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compute::sort(device_vector.begin(), device_vector.end());
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// transfer the values back to the host
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compute::copy(device_vector.begin(),
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device_vector.end(),
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host_vector.begin());
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// print out the sorted vector
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std::cout << "output: [ ";
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for(size_t i = 0; i < host_vector.size(); i++){
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std::cout << host_vector[i];
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if(i != host_vector.size() - 1){
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std::cout << ", ";
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}
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}
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std::cout << " ]" << std::endl;
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return 0;
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}
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