Function main

perf/perf_binary_find.cpp:29–71

}

int main(int argc, char *argv[])
{
    perf_parse_args(argc, argv);
    std::cout << "size: " << PERF_N << std::endl;

    // setup context and queue for the default device
    boost::compute::device device = boost::compute::system::default_device();
    boost::compute::context context(device);
    boost::compute::command_queue queue(context, device);
    std::cout << "device: " << device.name() << std::endl;

    // create vector of random numbers on the host
    std::vector<int> host_vector(PERF_N);
    std::generate(host_vector.begin(), host_vector.end(), rand_int);

    // create vector on the device and copy the data
    boost::compute::vector<int> device_vector(PERF_N, context);
    boost::compute::copy(
        host_vector.begin(), host_vector.end(), device_vector.begin(), queue
    );

    using boost::compute::_1;
    boost::compute::partition(
        device_vector.begin(), device_vector.end(), _1 < 20, queue
    );

    // just to be sure everything is finished before measuring execution time
    // of binary_find algorithm
    queue.finish();

    perf_timer t;
    for(size_t trial = 0; trial < PERF_TRIALS; trial++){
        t.start();
        boost::compute::detail::binary_find(
            device_vector.begin(), device_vector.end(), _1 >= 20, queue
        );
        queue.finish();
        t.stop();
    }
    std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;

    return 0;
}