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Diffstat (limited to 'src/boost/libs/compute/perf/perf_unique.cpp')
-rw-r--r-- | src/boost/libs/compute/perf/perf_unique.cpp | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/boost/libs/compute/perf/perf_unique.cpp b/src/boost/libs/compute/perf/perf_unique.cpp new file mode 100644 index 00000000..b25801f1 --- /dev/null +++ b/src/boost/libs/compute/perf/perf_unique.cpp @@ -0,0 +1,60 @@ +//---------------------------------------------------------------------------// +// Copyright (c) 2014 Roshan <thisisroshansmail@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 <numeric> +#include <vector> + +#include <boost/compute/system.hpp> +#include <boost/compute/algorithm/unique.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); + + perf_timer t; + for(size_t trial = 0; trial < PERF_TRIALS; trial++){ + boost::compute::copy( + host_vector.begin(), host_vector.end(), device_vector.begin(), queue + ); + t.start(); + boost::compute::unique( + device_vector.begin(), device_vector.end(), queue + ); + queue.finish(); + t.stop(); + } + std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl; + + return 0; +} |