120 lines
7.1 KiB
HTML
120 lines
7.1 KiB
HTML
<html>
|
||
<head>
|
||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||
<title>Design</title>
|
||
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
|
||
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
|
||
<link rel="home" href="../index.html" title="Chapter 1. Boost.Compute">
|
||
<link rel="up" href="../index.html" title="Chapter 1. Boost.Compute">
|
||
<link rel="prev" href="getting_started.html" title="Getting Started">
|
||
<link rel="next" href="tutorial.html" title="Tutorial">
|
||
</head>
|
||
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
|
||
<table cellpadding="2" width="100%"><tr>
|
||
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td>
|
||
<td align="center"><a href="../../../../../index.html">Home</a></td>
|
||
<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td>
|
||
<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
|
||
<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
|
||
<td align="center"><a href="../../../../../more/index.htm">More</a></td>
|
||
</tr></table>
|
||
<hr>
|
||
<div class="spirit-nav">
|
||
<a accesskey="p" href="getting_started.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="tutorial.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a>
|
||
</div>
|
||
<div class="section">
|
||
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
|
||
<a name="boost_compute.design"></a><a class="link" href="design.html" title="Design">Design</a>
|
||
</h2></div></div></div>
|
||
<div class="toc"><dl class="toc">
|
||
<dt><span class="section"><a href="design.html#boost_compute.design.library_architecture">Library Architecture</a></span></dt>
|
||
<dt><span class="section"><a href="design.html#boost_compute.design.why_opencl">Why OpenCL</a></span></dt>
|
||
</dl></div>
|
||
<div class="section">
|
||
<div class="titlepage"><div><div><h3 class="title">
|
||
<a name="boost_compute.design.library_architecture"></a><a class="link" href="design.html#boost_compute.design.library_architecture" title="Library Architecture">Library Architecture</a>
|
||
</h3></div></div></div>
|
||
<p>
|
||
The Boost Compute library consists of several different components. The core
|
||
layer provides a "thin" C++ wrapper over the OpenCL API. This includes
|
||
classes to manage OpenCL objects such as <code class="computeroutput">device</code>'s,
|
||
<code class="computeroutput">kernel</code>'s and <code class="computeroutput">command_queue</code>'s.
|
||
</p>
|
||
<p>
|
||
On top of the core layer is a partial implementation of the C++ standard
|
||
library providing common containers (e.g. <code class="computeroutput"><a class="link" href="../boost/compute/vector.html" title="Class template vector">vector<T></a></code>,
|
||
<code class="computeroutput"><a class="link" href="../boost/compute/array.html" title="Class template array">array<T, N></a></code>) along
|
||
with common algorithms (e.g. <code class="computeroutput"><a class="link" href="../boost/compute/transform.html" title="Function transform">transform()</a></code>
|
||
and <code class="computeroutput"><a class="link" href="../boost/compute/sort.html" title="Function sort">sort()</a></code>).
|
||
</p>
|
||
<p>
|
||
The library also provides a number of "fancy" iterators (e.g.
|
||
<code class="computeroutput"><a class="link" href="../boost/compute/transform_iterator.html" title="Class template transform_iterator">transform_iterator</a></code>
|
||
and <code class="computeroutput"><a class="link" href="../boost/compute/permutation_iterator.html" title="Class template permutation_iterator">permutation_iterator</a></code>)
|
||
which enhance the functionality of the standard algorithms.
|
||
</p>
|
||
<p>
|
||
Boost.Compute also supplies a number of facilities for interoperation with
|
||
other C and C++ libraries. See the section on <a class="link" href="interop.html" title="Interoperability">interoperability</a>
|
||
for more information.
|
||
</p>
|
||
<p>
|
||
See the <a class="link" href="reference.html#boost_compute.reference.api_overview" title="API Overview">API Overview</a>
|
||
section for a full list of functions, classes, and macros provided by Boost.Compute.
|
||
</p>
|
||
</div>
|
||
<div class="section">
|
||
<div class="titlepage"><div><div><h3 class="title">
|
||
<a name="boost_compute.design.why_opencl"></a><a class="link" href="design.html#boost_compute.design.why_opencl" title="Why OpenCL">Why OpenCL</a>
|
||
</h3></div></div></div>
|
||
<p>
|
||
Boost.Compute uses <a href="http://en.wikipedia.org/wiki/OpenCL" target="_top">OpenCL</a>
|
||
as its interface for executing code on parallel devices such as GPUs and
|
||
multi-core CPUs.
|
||
</p>
|
||
<p>
|
||
OpenCL was chosen for a number of reasons:
|
||
</p>
|
||
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
|
||
<li class="listitem">
|
||
Vendor-neutral, standard C/C++, and doesn't require a special compiler,
|
||
non-standard pragmas, or compiler extensions.
|
||
</li>
|
||
<li class="listitem">
|
||
It is not just another parallel-library abstraction layer, it provides
|
||
direct access to the underlying hardware.
|
||
</li>
|
||
<li class="listitem">
|
||
Its runtime compilation model allows for kernels to be optimized and
|
||
tuned dynamically for the device present when the application is run
|
||
rather that the device that was present when the code was compiled (which
|
||
is often a separate machine).
|
||
</li>
|
||
<li class="listitem">
|
||
Using OpenCL allows Boost.Compute to directly interoperate with other
|
||
OpenCL libraries (such as VexCL and OpenCV), as well as existing code
|
||
written with OpenCL.
|
||
</li>
|
||
<li class="listitem">
|
||
The "thin" C++ wrapper provided by Boost.Compute allows the
|
||
user to break-out and write their own custom kernels when the provided
|
||
APIs are not suitable.
|
||
</li>
|
||
</ul></div>
|
||
</div>
|
||
</div>
|
||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||
<td align="left"></td>
|
||
<td align="right"><div class="copyright-footer">Copyright © 2013, 2014 Kyle Lutz<p>
|
||
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
||
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
|
||
</p>
|
||
</div></td>
|
||
</tr></table>
|
||
<hr>
|
||
<div class="spirit-nav">
|
||
<a accesskey="p" href="getting_started.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="tutorial.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a>
|
||
</div>
|
||
</body>
|
||
</html>
|