📄 node103.html
字号:
<html><!DOCTYPE HTML PUBLIC "-//W3O//DTD W3 HTML 2.0//EN">
<!Converted with LaTeX2HTML 95.1 (Fri Jan 20 1995) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds >
<HEAD>
<TITLE>8.9 Summary</TITLE>
</HEAD>
<BODY>
<meta name="description" value="8.9 Summary">
<meta name="keywords" value="book">
<meta name="resource-type" value="document">
<meta name="distribution" value="global">
<P>
<BR> <HR><a href="msgs0.htm#2" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/tppmsgs/msgs0.htm#2"><img ALIGN=MIDDLE src="asm_color_tiny.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/asm_color_tiny.gif" alt="[DBPP]"></a> <A NAME=tex2html3201 HREF="node102.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node102.html"><IMG ALIGN=MIDDLE ALT="previous" SRC="previous_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/previous_motif.gif"></A> <A NAME=tex2html3209 HREF="node104.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node104.html"><IMG ALIGN=MIDDLE ALT="next" SRC="next_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/next_motif.gif"></A> <A NAME=tex2html3207 HREF="node94.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node94.html"><IMG ALIGN=MIDDLE ALT="up" SRC="up_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/up_motif.gif"></A> <A NAME=tex2html3211 HREF="node1.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node1.html"><IMG ALIGN=MIDDLE ALT="contents" SRC="contents_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/contents_motif.gif"></A> <A NAME=tex2html3212 HREF="node133.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node133.html"><IMG ALIGN=MIDDLE ALT="index" SRC="index_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/index_motif.gif"></A> <a href="msgs0.htm#3" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/tppmsgs/msgs0.htm#3"><img ALIGN=MIDDLE src="search_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/search_motif.gif" alt="[Search]"></a> <BR>
<B> Next:</B> <A NAME=tex2html3210 HREF="node104.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node104.html"> Exercises</A>
<B>Up:</B> <A NAME=tex2html3208 HREF="node94.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node94.html">8 Message Passing Interface</A>
<B> Previous:</B> <A NAME=tex2html3202 HREF="node102.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node102.html">8.8 Case Study: Earth System Model</A>
<BR><HR><P>
<H1><A NAME=SECTION03590000000000000000>8.9 Summary</A></H1>
<P>
This chapter has described the message-passing library approach to
parallel programming and has shown how parallel algorithm designs
developed using the techniques from Part I can be translated into
message-passing programs. It has also provided a tutorial
introduction to the MPI message-passing standard.
Table <A HREF="node103.html#tabmpsum" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node103.html#tabmpsum">8.2</A> summarizes the MPI routines described in this
chapter; Tables <A HREF="node103.html#tabmpc" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node103.html#tabmpc">8.3</A> and <A HREF="node103.html#tabmpf" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node103.html#tabmpf">8.4</A> summarize the C and
Fortran language bindings, respectively, for these functions and give
the types of each function's arguments.
<P>
<A NAME=13471> </A>
<P><A NAME=13839> </A><IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img1055.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/img1055.gif">
<BR><STRONG>Table 8.2:</STRONG> MPI quick reference: the functions included in the MPI
subset, the figure in which each is defined, the section in which
each is described, and the programs that illustrate their
use.
<A NAME=tabmpsum> </A><BR>
<P>
<P>
The principal features of the message-passing programming model as
realized in MPI are as follows.
<P>
<OL><LI>
A computation consists of a (typically fixed) set of heavyweight
processes, each with a unique identifier (integers 0..P--1).
<P>
<LI>
Processes interact by exchanging typed messages, by engaging in
collective communication operations, or by probing for pending
messages.
<P>
<LI>
Modularity is supported via communicators, which allow subprograms to
encapsulate communication operations and to be combined in sequential
and parallel compositions.
<P>
<LI>
Algorithms developed using the techniques set out in Part I can be expressed
directly if they do not create tasks dynamically or place multiple
tasks on a processor.
<P>
<LI>
Algorithms that <em> do
</em> create tasks dynamically or place
multiple tasks on a processor can require substantial refinement
before they can be implemented in MPI.
<P>
<LI>
Determinism is not guaranteed but can be achieved with careful
programming.
<P>
</OL>
<P>
<P><A NAME=13840> </A><IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img1056.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/img1056.gif">
<BR><STRONG>Table 8.3:</STRONG> MPI quick reference: C language binding.
<A NAME=tabmpc> </A><BR>
<P>
<P>
<P><A NAME=13844> </A><IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img1057.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/img1057.gif">
<BR><STRONG>Table:</STRONG> MPI quick reference: Fortran language binding. For brevity,
we adopt the convention that arguments with an <tt> I</tt> prefix have
type <tt> INTEGER</tt> unless specified otherwise. The <tt> ISTATUS</tt>
argument is always an integer array of size <tt>
MPI_STATUS_SIZE</tt>.
<A NAME=tabmpf> </A><BR>
<P>
<P>
<BR> <HR><a href="msgs0.htm#2" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/tppmsgs/msgs0.htm#2"><img ALIGN=MIDDLE src="asm_color_tiny.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/asm_color_tiny.gif" alt="[DBPP]"></a> <A NAME=tex2html3201 HREF="node102.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node102.html"><IMG ALIGN=MIDDLE ALT="previous" SRC="previous_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/previous_motif.gif"></A> <A NAME=tex2html3209 HREF="node104.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node104.html"><IMG ALIGN=MIDDLE ALT="next" SRC="next_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/next_motif.gif"></A> <A NAME=tex2html3207 HREF="node94.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node94.html"><IMG ALIGN=MIDDLE ALT="up" SRC="up_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/up_motif.gif"></A> <A NAME=tex2html3211 HREF="node1.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node1.html"><IMG ALIGN=MIDDLE ALT="contents" SRC="contents_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/contents_motif.gif"></A> <A NAME=tex2html3212 HREF="node133.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node133.html"><IMG ALIGN=MIDDLE ALT="index" SRC="index_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/index_motif.gif"></A> <a href="msgs0.htm#3" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/tppmsgs/msgs0.htm#3"><img ALIGN=MIDDLE src="search_motif.gif" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/search_motif.gif" alt="[Search]"></a> <BR>
<B> Next:</B> <A NAME=tex2html3210 HREF="node104.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node104.html"> Exercises</A>
<B>Up:</B> <A NAME=tex2html3208 HREF="node94.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node94.html">8 Message Passing Interface</A>
<B> Previous:</B> <A NAME=tex2html3202 HREF="node102.html" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/node102.html">8.8 Case Study: Earth System Model</A>
<BR><HR><P>
<P><ADDRESS>
<I>© Copyright 1995 by <A href="msgs0.htm#6" tppabs="http://www.dit.hcmut.edu.vn/books/system/par_anl/tppmsgs/msgs0.htm#6">Ian Foster</a></I>
</ADDRESS>
</BODY>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -