78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
//---------------------------------------------------------------------------//
|
|
// Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@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 <algorithm>
|
|
#include <iostream>
|
|
#include <vector>
|
|
|
|
#include <boost/compute/system.hpp>
|
|
#include <boost/compute/algorithm/count.hpp>
|
|
#include <boost/compute/container/vector.hpp>
|
|
|
|
#include "perf.hpp"
|
|
|
|
int rand_int()
|
|
{
|
|
return static_cast<int>((rand() / double(RAND_MAX)) * 25.0);
|
|
}
|
|
|
|
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
|
|
);
|
|
|
|
size_t count = 0;
|
|
perf_timer t;
|
|
for(size_t trial = 0; trial < PERF_TRIALS; trial++){
|
|
t.start();
|
|
count = boost::compute::count(
|
|
device_vector.begin(), device_vector.end(), 4, queue
|
|
);
|
|
queue.finish();
|
|
t.stop();
|
|
}
|
|
std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
|
|
std::cout << "count: " << count << std::endl;
|
|
|
|
// verify count is correct
|
|
size_t host_count = std::count(host_vector.begin(),
|
|
host_vector.end(),
|
|
4);
|
|
if(count != host_count){
|
|
std::cout << "ERROR: "
|
|
<< "device_count (" << count << ") "
|
|
<< "!= "
|
|
<< "host_count (" << host_count << ")"
|
|
<< std::endl;
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|