By William Gropp, Ewing L. Lusk, Anthony Skjellum, Rajeev Thakur
ISBN-10: 026257134X
ISBN-13: 9780262571340
The Message Passing Interface (MPI) specification is typical for fixing major clinical and engineering difficulties on parallel pcs. There exist greater than a dozen implementations on desktop structures starting from IBM SP-2 supercomputers to clusters of computers operating home windows NT or Linux ("Beowulf" machines). The preliminary MPI commonplace rfile, MPI-1, was once lately up-to-date by means of the MPI discussion board. the hot model, MPI-2, includes either major improvements to the prevailing MPI center and new features.Using MPI is a very up to date model of the authors' 1994 advent to the middle capabilities of MPI. It provides fabric at the new C++ and Fortran ninety bindings for MPI in the course of the booklet. It includes better dialogue of datatype extents, the main often misunderstood characteristic of MPI-1, in addition to fabric at the new extensions to uncomplicated MPI performance further through the MPI-2 discussion board within the region of MPI datatypes and collective operations.Using MPI-2 covers the recent extensions to easy MPI. those comprise parallel I/O, distant reminiscence entry operations, and dynamic procedure administration. the quantity additionally comprises fabric on tuning MPI purposes for prime functionality on glossy MPI implementations.This two-volume set includes utilizing MPI and utilizing MPI-2.
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Extra info for Using MPI and Using MPI-2
Example text
4 A First MPI P rogram in C++ Here we repeat the 7r-calculating program, this time in C++, to illustrate the new C++ bindings that were added to the MPI Standard as part of the MPI-2 effort. The MPI Forum had three basic alternatives to choose from in deciding how users would use MPI in C++ programs. The easiest (from the Forum' s point of view) would be to just use the C bindings as they stood. 2 C bindings for routines used in the pi program "external C" functions. It was decided that this approach would be a disappoint ment to C++ programmers, who are used to the convenience of C++.
Although some of the results of this effort are described in this book, most of them are covered formally in [55] and described in a more tutorial approach in [64]. 2 Introduction to MPI In this chapter we introduce the basic concepts of MPI, showing how they arise naturally out of the message-passing model. 1 Goal The primary goal of the MPI specification is to demonstrate that users need not compromise among efficiency, portability, and functionality. Specifically, users can write portable programs that still take advantage of the specialized hardware and software offered by individual vendors.
One of the most critical families of users is the parallel library writers, for whom efficient, portable, and highly functional code is extremely important. MPI is the first specification that allows these users to write truly portable libraries. The goal of MPI is ambitious, but because the collective effort of collaborative de sign and competitive implementation has been successful, it has removed the need for alternatives to MPI as means of specifying message-passing algorithms to be executed on any computer platform that implements the message-passing model.