summaryrefslogtreecommitdiffstats
path: root/src/boost/libs/compute/example/mapped_view.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/boost/libs/compute/example/mapped_view.cpp')
-rw-r--r--src/boost/libs/compute/example/mapped_view.cpp45
1 files changed, 45 insertions, 0 deletions
diff --git a/src/boost/libs/compute/example/mapped_view.cpp b/src/boost/libs/compute/example/mapped_view.cpp
new file mode 100644
index 00000000..1e05107a
--- /dev/null
+++ b/src/boost/libs/compute/example/mapped_view.cpp
@@ -0,0 +1,45 @@
+//---------------------------------------------------------------------------//
+// 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 <iostream>
+#include <vector>
+
+#include <boost/compute/system.hpp>
+#include <boost/compute/algorithm/reduce.hpp>
+#include <boost/compute/container/mapped_view.hpp>
+
+namespace compute = boost::compute;
+
+// this example demonstrates how to use the mapped_view class to map
+// an array of numbers to device memory and use the reduce() algorithm
+// to calculate the sum.
+int main()
+{
+ // get default device and setup context
+ compute::device gpu = compute::system::default_device();
+ compute::context context(gpu);
+ compute::command_queue queue(context, gpu);
+ std::cout << "device: " << gpu.name() << std::endl;
+
+ // create data on host
+ int data[] = { 4, 2, 3, 7, 8, 9, 1, 6 };
+
+ // create mapped view on device
+ compute::mapped_view<int> view(data, 8, context);
+
+ // use reduce() to calculate sum on the device
+ int sum = 0;
+ compute::reduce(view.begin(), view.end(), &sum, queue);
+
+ // print the sum on the host
+ std::cout << "sum: " << sum << std::endl;
+
+ return 0;
+}