53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
//---------------------------------------------------------------------------//
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// Copyright (c) 2015 Jakub Szuppe <j.szuppe@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 <iostream>
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#include <algorithm>
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#include <vector>
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#include <bolt/cl/scan.h>
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#include <bolt/cl/copy.h>
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#include <bolt/cl/device_vector.h>
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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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bolt::cl::control ctrl = bolt::cl::control::getDefault();
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::cl::Device device = ctrl.getDevice();
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std::cout << "device: " << device.getInfo<CL_DEVICE_NAME>() << std::endl;
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// create vector of random numbers on the host
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std::vector<int> h_vec = generate_random_vector<int>(PERF_N);
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// create device vector
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bolt::cl::device_vector<int> d_vec(PERF_N);
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perf_timer t;
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for(size_t trial = 0; trial < PERF_TRIALS; trial++){
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// transfer data to the device
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bolt::cl::copy(h_vec.begin(), h_vec.end(), d_vec.begin());
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t.start();
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bolt::cl::exclusive_scan(d_vec.begin(), d_vec.end(), d_vec.begin());
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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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// transfer data back to host
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bolt::cl::copy(d_vec.begin(), d_vec.end(), h_vec.begin());
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return 0;
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}
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