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- //---------------------------------------------------------------------------//
- // Copyright (c) 2015 Jakub Szuppe <j.szuppe@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 <iostream>
- #include <algorithm>
- #include <vector>
- #include <bolt/cl/scan.h>
- #include <bolt/cl/copy.h>
- #include <bolt/cl/device_vector.h>
- #include "perf.hpp"
- int main(int argc, char *argv[])
- {
- perf_parse_args(argc, argv);
- std::cout << "size: " << PERF_N << std::endl;
- bolt::cl::control ctrl = bolt::cl::control::getDefault();
- ::cl::Device device = ctrl.getDevice();
- std::cout << "device: " << device.getInfo<CL_DEVICE_NAME>() << std::endl;
- // create vector of random numbers on the host
- std::vector<int> h_vec = generate_random_vector<int>(PERF_N);
- // create device vector
- bolt::cl::device_vector<int> d_vec(PERF_N);
- perf_timer t;
- for(size_t trial = 0; trial < PERF_TRIALS; trial++){
- // transfer data to the device
- bolt::cl::copy(h_vec.begin(), h_vec.end(), d_vec.begin());
- t.start();
- bolt::cl::exclusive_scan(d_vec.begin(), d_vec.end(), d_vec.begin());
- t.stop();
- }
- std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
- // transfer data back to host
- bolt::cl::copy(d_vec.begin(), d_vec.end(), h_vec.begin());
- return 0;
- }
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