Chapter 1. Introduction
- Table of Contents
- 1.1. MPT components
- 1.2. MPT software
- 1.3. Product description
- 1.4. Distribution of these release notes
- 1.5. Reader comments
This document provides an overview of the Cray Message Passing Toolkit and Message Passing Toolkit for UNICOS and UNICOS/mk 1.4 releases. MPT is a software package that supports interprocess data exchange for applications that use concurrent, cooperating processes on a single host or on multiple hosts. Data exchange is done through message passing, which is the use of library calls to request data delivery from one process to another or between groups of processes.
The MPT 1.4 release is supported on the following platforms:
Cray systems running UNICOS release 10.0.0.3 or later.
Cray T3E systems running UNICOS/mk release 1.5 or later.
Cray systems running Programming Environment release 3.3 or later.
Note: If UNICOS is upgraded to a new major release after MPT 1.4 has been installed (for example, from UNICOS 9.0 to UNICOS 10.0.0.3), the mpt_config configuration script must be run to reconfigure some of the MPT 1.4 software. Reconfigure using the following instructions:
or:
These release notes include information about the following:
New features
Compatibilities and differences
Documentation
Customer services
Release package contents
The remainder of this chapter discusses the following topics:
MPT components
MPT software
Product description
Distribution of these release notes
Reader comments
1.1. MPT components
The MPT 1.4 package contains the following components and accompanying documentation:
Parallel Virtual Machine (PVM)
Message Passing Interface (MPI)
Logically shared, distributed memory (SHMEM) message passing routines
Caution | The MPT 1.4 release is the last release that will support PVM on Cray Inc. systems. |
The PVM and MPI components of MPT are based on industry standards for the message passing programming. For a description of MPI, see the MPI man pages, especially MPI(1). For a description of PVM, see the PVM man pages, especially pvm(1) and pvm_intro(1).
The SHMEM library is packaged with MPT on UNICOS. On UNICOS/mk systems, the SHMEM library is delivered with the CrayLibs package. See the SHMEM man pages, especially intro_shmem(3) for more information.