75 lines
2.3 KiB
C++
75 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 <algorithm>
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#include <iostream>
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#include <numeric>
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#include <vector>
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#include <boost/compute/system.hpp>
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#include <boost/compute/algorithm/inner_product.hpp>
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#include <boost/compute/container/vector.hpp>
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#include "perf.hpp"
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int rand_int()
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{
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return static_cast<int>((rand() / double(RAND_MAX)) * 25.0);
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}
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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> h1(PERF_N);
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std::vector<int> h2(PERF_N);
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std::generate(h1.begin(), h1.end(), rand_int);
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std::generate(h2.begin(), h2.end(), rand_int);
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// create vector on the device and copy the data
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boost::compute::vector<int> d1(PERF_N, context);
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boost::compute::vector<int> d2(PERF_N, context);
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boost::compute::copy(h1.begin(), h1.end(), d1.begin(), queue);
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boost::compute::copy(h2.begin(), h2.end(), d2.begin(), queue);
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int product = 0;
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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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product = boost::compute::inner_product(
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d1.begin(), d1.end(), d2.begin(), int(0), 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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// verify product is correct
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int host_product = std::inner_product(
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h1.begin(), h1.end(), h2.begin(), int(0)
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);
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if(product != host_product){
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std::cout << "ERROR: "
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<< "device_product (" << product << ") "
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<< "!= "
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<< "host_product (" << host_product << ")"
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<< 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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