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3bc5bfaf78
This removes the timer class. The technique of measuring the time difference between two different OpenCL markers on a command queue is not portable to all OpenCL implementations (only works on NVIDIA). A new internal timer class has been added which uses boost::chrono (or std::chrono if BOOST_COMPUTE_TIMER_USE_STD_CHRONO is defined). This new timer is used by the benchmarks to measure time elapsed on the host.
70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
//---------------------------------------------------------------------------//
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// Copyright (c) 2013 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://kylelutz.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 <vector>
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#include <boost/compute.hpp>
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#include <boost/compute/detail/timer.hpp>
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float rand_float()
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{
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return ((rand() / float(RAND_MAX)) - 0.5f) * 100000.0f;
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}
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int main(int argc, char *argv[])
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{
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size_t size = 1000;
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if(argc >= 2){
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size = boost::lexical_cast<size_t>(argv[1]);
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}
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std::cout << "size: " << size << std::endl;
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// setup context and queue for the default device
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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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// create vector of random numbers on the host
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std::vector<float> host_vector(size);
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std::generate(host_vector.begin(), host_vector.end(), rand_float);
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// create vector on the device and copy the data
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boost::compute::vector<float> device_vector(size, context);
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boost::compute::copy(
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host_vector.begin(),
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host_vector.end(),
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device_vector.begin(),
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queue
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);
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// sort vector
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boost::compute::detail::timer t;
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boost::compute::sort(
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device_vector.begin(),
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device_vector.end(),
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queue
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);
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queue.finish();
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std::cout << "time: " << t.elapsed() << " ms" << std::endl;
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// verify vector is sorted
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if(!boost::compute::is_sorted(device_vector.begin(),
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device_vector.end(),
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queue)){
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std::cout << "ERROR: is_sorted() returned false" << 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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