Preface

This manual presents techniques that application programmers can use to get top performance from message-passing programs running on Sun trademark servers and clusters of servers.

Before You Read This Book

This manual assumes that the reader has basic knowledge of:

Developing parallel applications with the Sun MPI libraries

Executing parallel applications with the Sun Cluster Runtime Environment (CRE) and a Distributed Resource Manager, such as Sun N1 Grid Engine (N1GE) Version 6, Load Sharing Facility (LSF) HPC Version 6.2 from Platform Computing, and OpenPBS Portable Batch System (PBS) 2.3.16 and Altair PBS Professional 7.1.

Debugging parallel applications

How This Book Is Organized

This manual covers the following topics.

Chapter 1 - Quick Reference - A summary of performance tips

Chapter 2 - Introduction: The Sun HPC ClusterTools Solution

Chapter 3 - Choosing Your Programming Model and Hardware

Chapter 4 - Performance Programming with the Sun MPI (message-passing) library

Chapter 5 - One-sided Communications

Chapter 6 - Compilation and Linking for top performance

Chapter 7 - Runtime Considerations and Tuning

Chapter 8 - Profiling tools and techniques

Appendix A - Sun MPI Implementation and how it affects performance

Appendix B - Sun MPI Environment Variables and how to use them

Using UNIX Commands

This document might not contain information about basic UNIX^® commands and procedures such as shutting down the system, booting the system, and configuring devices. Refer to the following for this information:

Software documentation that you received with your system

Solaris Operating System documentation, which is at:

http://docs.sun.com

Typographic Conventions

Typeface`^[1]`	Meaning	Examples
`AaBbCc123`	The names of commands, files, and directories; on-screen computer output	Edit your`.login` file. Use `ls` `-a` to list all files. `% You have mail`.
`AaBbCc123`	What you type, when contrasted with on-screen computer output	`%` `su` `Password:`
AaBbCc123	Book titles, new words or terms, words to be emphasized. Replace command-line variables with real names or values.	Read Chapter 6 in the User's Guide. These are called class options. You must be superuser to do this. To delete a file, type `rm` filename.

Typeface^[1]

Meaning

Examples

AaBbCc123

The names of commands, files, and directories; on-screen computer output

Edit your.login file.

Use ls -a to list all files.

% You have mail.

AaBbCc123

What you type, when contrasted with on-screen computer output

% su

Password:

AaBbCc123

Book titles, new words or terms, words to be emphasized. Replace command-line variables with real names or values.

Read Chapter 6 in the User's Guide.

These are called class options.

You must be superuser to do this.

To delete a file, type rm filename.

Shell Prompts

Shell	Prompt
C shell	machine-name`%`
C shell superuser	machine-name`#`
Bourne shell and Korn shell	`$`
Bourne shell and Korn shell superuser	`#`

Application	Title	Part Number
Sun HPC ClusterTools Documentation	Read Me First: Guide to Sun HPC ClusterTools Software Documentation	819-4136-10
Sun HPC ClusterTools Software	Sun HPC ClusterTools 6 Software Release Notes Sun HPC ClusterTools 6 Software Installation Guide Sun HPC ClusterTools 6 Software User's Guide Sun HPC ClusterTools 6 Software Administrator's Guide	819-4129-10 819-4130-10 819-4131-10 819-4132-10
Sun MPI Programming	Sun MPI 7.0 Software Programming and Reference Guide	819-4133-10

Documentation, Support, and Training

Sun Function	URL
Documentation	`http://www.sun.com/documentation/`
Support	`http://www.sun.com/support/`
Training	`http://www.sun.com/training/`

Third-Party Web Sites

Sun is not responsible for the availability of third-party web sites mentioned in this document. Sun does not endorse and is not responsible or liable for any content, advertising, products, or other materials that are available on or through such sites or resources. Sun will not be responsible or liable for any actual or alleged damage or loss caused by or in connection with the use of or reliance on any such content, goods, or services that are available on or through such sites or resources.

Sun Welcomes Your Comments

Sun is interested in improving its documentation and welcomes your comments and suggestions. You can submit your comments by going to:

http://www.sun.com/hwdocs/feedback

Please include the title and part number of your document with your feedback:

Sun HPC ClusterTools 6 Software Performance Guide, part number 819-4134-10

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