70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
//---------------------------------------------------------------------------//
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// Copyright (c) 2013-2014 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 <cmath>
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#include <vector>
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#include <algorithm>
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#include <iostream>
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#include <boost/compute/system.hpp>
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#include <boost/compute/algorithm/merge.hpp>
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#include <boost/compute/container/vector.hpp>
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#include "perf.hpp"
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int main(int argc, char *argv[])
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{
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perf_parse_args(argc, argv);
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std::cout << "size: " << PERF_N << std::endl;
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boost::compute::device device = boost::compute::system::default_device();
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boost::compute::context context(device);
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boost::compute::command_queue queue(context, device);
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std::cout << "device: " << device.name() << std::endl;
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std::vector<int> v1 = generate_random_vector<int>(std::floor(PERF_N / 2.0));
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std::vector<int> v2 = generate_random_vector<int>(std::ceil(PERF_N / 2.0));
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std::vector<int> v3(PERF_N);
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std::sort(v1.begin(), v1.end());
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std::sort(v2.begin(), v2.end());
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boost::compute::vector<int> gpu_v1(v1.begin(), v1.end(), queue);
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boost::compute::vector<int> gpu_v2(v2.begin(), v2.end(), queue);
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boost::compute::vector<int> gpu_v3(PERF_N, context);
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perf_timer t;
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for(size_t trial = 0; trial < PERF_TRIALS; trial++){
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t.start();
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boost::compute::merge(gpu_v1.begin(), gpu_v1.end(),
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gpu_v2.begin(), gpu_v2.end(),
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gpu_v3.begin(),
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queue
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);
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queue.finish();
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t.stop();
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}
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std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
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std::vector<int> check_v3(PERF_N);
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boost::compute::copy(gpu_v3.begin(), gpu_v3.end(), check_v3.begin(), queue);
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queue.finish();
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std::merge(v1.begin(), v1.end(), v2.begin(), v2.end(), v3.begin());
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bool ok = std::equal(check_v3.begin(), check_v3.end(), v3.begin());
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if(!ok){
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std::cerr << "ERROR: merged ranges different" << std::endl;
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return -1;
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}
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return 0;
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}
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