About This Manual

This publication documents the Message Passing Toolkit for IRIX (MPT) 1.5 implementation of PVM-3 supported on SGI MIPS based systems running IRIX release 6.5 or later. No technical changes have been made for MPT 1.5.

This implementation of PVM-3 is based on the public domain PVM product, version 3.3.10, developed by researchers at the Oak Ridge National Laboratory (ORNL), the University of Tennessee (UT), and Emory University (EU). It consists of a PVM library and several commands that support PVM.

Related Publications

The following documents contain additional information that might be helpful:

  • Message Passing Toolkit: MPI Programmer's Manual

  • NQE User's Guide

  • NQE Administration

  • Application Programmer's Library Reference Manual

  • Installing Programming Environment Products

All of these publications can be ordered from the Minnesota Distribution Center. For ordering information, see “Obtaining Publications.”

Other Sources

Material about PVM is available from the following other sources:

  • PVM: Parallel Virtual Machine: A User's Guide and Tutorial for Networked Parallel Computing, available at the following URL:


  • Usenet news group at comp.parallel.pvm

  • PVM standard, available from the Computer Science and Mathematics Division of Oak Ridge National Laboratories.

  • PVM related web pages from the following PVM home page:


Obtaining Publications

To obtain SGI documentation, go to the SGI Technical Publications Library at http://techpubs.sgi.com.


The following conventions are used throughout this document:




This fixed-space font denotes literal items such as commands, files, routines, path names, signals, messages, and programming language structures.


Man page section identifiers appear in parentheses after man page names. The following list describes the identifiers:


User commands


User commands ported from BSD


System calls


Library routines, macros, and opdefs


Devices (special files)




File formats


Miscellaneous topics


DWB-related information


Administrator commands

Some internal routines (for example, the _assign_asgcmd_info() routine) do not have man pages associated with them.


Italic typeface denotes variable entries and words or concepts being defined.

user input 

This bold, fixed-space font denotes literal items that the user enters in interactive sessions. Output is shown in nonbold, fixed-space font.

[ ] 

Brackets enclose optional portions of a command or directive line.


Ellipses indicate that a preceding element can be repeated.

SGI systems include all MIPS based systems running IRIX 6.5 or later.

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