1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>Chapter 26. Boost.MPI</title> 6<link rel="stylesheet" href="../../doc/src/boostbook.css" type="text/css"> 7<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 8<link rel="home" href="index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> 9<link rel="up" href="libraries.html" title="Part I. The Boost C++ Libraries (BoostBook Subset)"> 10<link rel="prev" href="boost/move_if_n_1_3_26_20_16_2_4.html" title="Function template move_if_not_lvalue_reference"> 11<link rel="next" href="mpi/getting_started.html" title="Getting started"> 12</head> 13<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 14<table cellpadding="2" width="100%"><tr> 15<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../boost.png"></td> 16<td align="center"><a href="../../index.html">Home</a></td> 17<td align="center"><a href="../../libs/libraries.htm">Libraries</a></td> 18<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 19<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 20<td align="center"><a href="../../more/index.htm">More</a></td> 21</tr></table> 22<hr> 23<div class="spirit-nav"> 24<a accesskey="p" href="boost/move_if_n_1_3_26_20_16_2_4.html"><img src="../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="libraries.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="mpi/getting_started.html"><img src="../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="chapter"> 27<div class="titlepage"><div> 28<div><h2 class="title"> 29<a name="mpi"></a>Chapter 26. Boost.MPI</h2></div> 30<div><div class="author"><h3 class="author"> 31<span class="firstname">Douglas</span> <span class="surname">Gregor</span> 32</h3></div></div> 33<div><div class="author"><h3 class="author"> 34<span class="firstname">Matthias</span> <span class="surname">Troyer</span> 35</h3></div></div> 36<div><p class="copyright">Copyright © 2005-2007 Douglas Gregor, 37 Matthias Troyer, Trustees of Indiana University</p></div> 38<div><div class="legalnotice"> 39<a name="mpi.legal"></a><p> 40 Distributed under the Boost Software License, Version 1.0. (See accompanying 41 file LICENSE_1_0.txt or copy at <ulink url="http://www.boost.org/LICENSE_1_0.txt"> 42 http://www.boost.org/LICENSE_1_0.txt </ulink>) 43 </p> 44</div></div> 45</div></div> 46<div class="toc"> 47<p><b>Table of Contents</b></p> 48<dl class="toc"> 49<dt><span class="section"><a href="mpi.html#mpi.introduction">Introduction</a></span></dt> 50<dt><span class="section"><a href="mpi/getting_started.html">Getting started</a></span></dt> 51<dd><dl> 52<dt><span class="section"><a href="mpi/getting_started.html#mpi.getting_started.implementation">MPI Implementation</a></span></dt> 53<dt><span class="section"><a href="mpi/getting_started.html#mpi.getting_started.config">Configure and Build</a></span></dt> 54<dt><span class="section"><a href="mpi/getting_started.html#mpi.getting_started.using">Using Boost.MPI</a></span></dt> 55</dl></dd> 56<dt><span class="section"><a href="mpi/tutorial.html">Tutorial</a></span></dt> 57<dd><dl> 58<dt><span class="section"><a href="mpi/tutorial.html#mpi.tutorial.point_to_point">Point-to-Point communication</a></span></dt> 59<dt><span class="section"><a href="mpi/tutorial.html#mpi.tutorial.collectives">Collective operations</a></span></dt> 60<dt><span class="section"><a href="mpi/tutorial.html#mpi.tutorial.user_data_types">User-defined data types</a></span></dt> 61<dt><span class="section"><a href="mpi/tutorial.html#mpi.tutorial.communicators">Communicators</a></span></dt> 62<dt><span class="section"><a href="mpi/tutorial.html#mpi.tutorial.threading">Threads</a></span></dt> 63<dt><span class="section"><a href="mpi/tutorial.html#mpi.tutorial.skeleton_and_content">Separating structure 64 from content</a></span></dt> 65<dt><span class="section"><a href="mpi/tutorial.html#mpi.tutorial.performance_optimizations">Performance optimizations</a></span></dt> 66</dl></dd> 67<dt><span class="section"><a href="mpi/c_mapping.html">Mapping from C MPI to Boost.MPI</a></span></dt> 68<dt><span class="section"><a href="mpi/reference.html">Reference</a></span></dt> 69<dd><dl> 70<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi_hpp">Header <boost/mpi.hpp></a></span></dt> 71<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.allocator_hpp">Header <boost/mpi/allocator.hpp></a></span></dt> 72<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.cartesian_communicator_hpp">Header <boost/mpi/cartesian_communicator.hpp></a></span></dt> 73<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.collectives_hpp">Header <boost/mpi/collectives.hpp></a></span></dt> 74<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.collectives_fwd_hpp">Header <boost/mpi/collectives_fwd.hpp></a></span></dt> 75<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.communicator_hpp">Header <boost/mpi/communicator.hpp></a></span></dt> 76<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.config_hpp">Header <boost/mpi/config.hpp></a></span></dt> 77<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.datatype_hpp">Header <boost/mpi/datatype.hpp></a></span></dt> 78<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.datatype_fwd_hpp">Header <boost/mpi/datatype_fwd.hpp></a></span></dt> 79<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.environment_hpp">Header <boost/mpi/environment.hpp></a></span></dt> 80<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.exception_hpp">Header <boost/mpi/exception.hpp></a></span></dt> 81<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.graph_communicator_hpp">Header <boost/mpi/graph_communicator.hpp></a></span></dt> 82<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.group_hpp">Header <boost/mpi/group.hpp></a></span></dt> 83<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.inplace_hpp">Header <boost/mpi/inplace.hpp></a></span></dt> 84<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.intercommunicator_hpp">Header <boost/mpi/intercommunicator.hpp></a></span></dt> 85<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.nonblocking_hpp">Header <boost/mpi/nonblocking.hpp></a></span></dt> 86<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.operations_hpp">Header <boost/mpi/operations.hpp></a></span></dt> 87<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.packed_iarchive_hpp">Header <boost/mpi/packed_iarchive.hpp></a></span></dt> 88<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.packed_oarchive_hpp">Header <boost/mpi/packed_oarchive.hpp></a></span></dt> 89<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.python_hpp">Header <boost/mpi/python.hpp></a></span></dt> 90<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.request_hpp">Header <boost/mpi/request.hpp></a></span></dt> 91<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.skeleton_and_content_hpp">Header <boost/mpi/skeleton_and_content.hpp></a></span></dt> 92<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.skeleton_and_content_fwd_hpp">Header <boost/mpi/skeleton_and_content_fwd.hpp></a></span></dt> 93<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.status_hpp">Header <boost/mpi/status.hpp></a></span></dt> 94<dt><span class="section"><a href="mpi/reference.html#header.boost.mpi.timer_hpp">Header <boost/mpi/timer.hpp></a></span></dt> 95</dl></dd> 96<dt><span class="section"><a href="mpi/python.html">Python Bindings</a></span></dt> 97<dd><dl> 98<dt><span class="section"><a href="mpi/python.html#mpi.python.quickstart">Quickstart</a></span></dt> 99<dt><span class="section"><a href="mpi/python.html#mpi.python.user_data">Transmitting User-Defined Data</a></span></dt> 100<dt><span class="section"><a href="mpi/python.html#mpi.python.collectives">Collectives</a></span></dt> 101<dt><span class="section"><a href="mpi/python.html#mpi.python.skeleton_content">Skeleton/Content Mechanism</a></span></dt> 102<dt><span class="section"><a href="mpi/python.html#mpi.python.compatibility">C++/Python MPI Compatibility</a></span></dt> 103<dt><span class="section"><a href="mpi/python.html#mpi.python.reference">Reference</a></span></dt> 104</dl></dd> 105<dt><span class="section"><a href="mpi/design.html">Design Philosophy</a></span></dt> 106<dt><span class="section"><a href="mpi/performance.html">Performance Evaluation</a></span></dt> 107<dt><span class="section"><a href="mpi/history.html">Revision History</a></span></dt> 108<dt><span class="section"><a href="mpi/acknowledge.html">Acknowledgments</a></span></dt> 109</dl> 110</div> 111<div class="section"> 112<div class="titlepage"><div><div><h2 class="title" style="clear: both"> 113<a name="mpi.introduction"></a><a class="link" href="mpi.html#mpi.introduction" title="Introduction">Introduction</a> 114</h2></div></div></div> 115<p> 116 Boost.MPI is a library for message passing in high-performance parallel applications. 117 A Boost.MPI program is one or more processes that can communicate either via 118 sending and receiving individual messages (point-to-point communication) or 119 by coordinating as a group (collective communication). Unlike communication 120 in threaded environments or using a shared-memory library, Boost.MPI processes 121 can be spread across many different machines, possibly with different operating 122 systems and underlying architectures. 123 </p> 124<p> 125 Boost.MPI is not a completely new parallel programming library. Rather, it 126 is a C++-friendly interface to the standard Message Passing Interface (<a href="http://www-unix.mcs.anl.gov/mpi/" target="_top">MPI</a>), the most popular library 127 interface for high-performance, distributed computing. MPI defines a library 128 interface, available from C, Fortran, and C++, for which there are many <a href="http://www-unix.mcs.anl.gov/mpi/implementations.html" target="_top">MPI implementations</a>. 129 Although there exist C++ bindings for MPI, they offer little functionality 130 over the C bindings. The Boost.MPI library provides an alternative C++ interface 131 to MPI that better supports modern C++ development styles, including complete 132 support for user-defined data types and C++ Standard Library types, arbitrary 133 function objects for collective algorithms, and the use of modern C++ library 134 techniques to maintain maximal efficiency. 135 </p> 136<p> 137 At present, Boost.MPI supports the majority of functionality in MPI 1.1. The 138 thin abstractions in Boost.MPI allow one to easily combine it with calls to 139 the underlying C MPI library. Boost.MPI currently supports: 140 </p> 141<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> 142<li class="listitem"> 143 Communicators: Boost.MPI supports the creation, destruction, cloning, and 144 splitting of MPI communicators, along with manipulation of process groups. 145 </li> 146<li class="listitem"> 147 Point-to-point communication: Boost.MPI supports point-to-point communication 148 of primitive and user-defined data types with send and receive operations, 149 with blocking and non-blocking interfaces. 150 </li> 151<li class="listitem"> 152 Collective communication: Boost.MPI supports collective operations such 153 as <code class="computeroutput"><a class="link" href="boost/mpi/reduce.html" title="Function reduce">reduce</a></code> 154 and <code class="computeroutput"><a class="link" href="boost/mpi/gather.html" title="Function gather">gather</a></code> 155 with both built-in and user-defined data types and function objects. 156 </li> 157<li class="listitem"> 158 MPI Datatypes: Boost.MPI can build MPI data types for user-defined types 159 using the <a href="../../libs/serialization/doc" target="_top">Boost.Serialization</a> 160 library. 161 </li> 162<li class="listitem"> 163 Separating structure from content: Boost.MPI can transfer the shape (or 164 "skeleton") of complex data structures (lists, maps, etc.) and 165 then separately transfer their content. This facility optimizes for cases 166 where the data within a large, static data structure needs to be transmitted 167 many times. 168 </li> 169</ul></div> 170<p> 171 Boost.MPI can be accessed either through its native C++ bindings, or through 172 its alternative, <a class="link" href="mpi/python.html" title="Python Bindings">Python interface</a>. 173 </p> 174</div> 175</div> 176<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 177<td align="left"><p><small>Last revised: August 11, 2020 at 15:03:12 GMT</small></p></td> 178<td align="right"><div class="copyright-footer"></div></td> 179</tr></table> 180<hr> 181<div class="spirit-nav"> 182<a accesskey="p" href="boost/move_if_n_1_3_26_20_16_2_4.html"><img src="../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="libraries.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="mpi/getting_started.html"><img src="../../doc/src/images/next.png" alt="Next"></a> 183</div> 184</body> 185</html> 186
