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-rw-r--r--src/boost/libs/compute/perf/perf_partition_point.cpp68
1 files changed, 68 insertions, 0 deletions
diff --git a/src/boost/libs/compute/perf/perf_partition_point.cpp b/src/boost/libs/compute/perf/perf_partition_point.cpp
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+++ b/src/boost/libs/compute/perf/perf_partition_point.cpp
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+//---------------------------------------------------------------------------//
+// 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/lambda.hpp>
+#include <boost/compute/algorithm/partition.hpp>
+#include <boost/compute/algorithm/partition_point.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
+ );
+
+ using boost::compute::_1;
+ boost::compute::partition(
+ device_vector.begin(), device_vector.end(), _1 < 20, queue
+ );
+
+
+ perf_timer t;
+ for(size_t trial = 0; trial < PERF_TRIALS; trial++){
+ t.start();
+ boost::compute::partition_point(
+ 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;
+}