Installation

PE Components

The PE components are:

Message passing and collective communication API subroutine libraries

These libraries, which contain subroutines that help application developers parallelize their code, are described in IBM Parallel Environment for AIX: MPI Subroutine Reference. For additional information about MPI, see IBM Parallel Environment for AIX: MPI Programming Guide.

Parallel operating environment (POE)

This software helps ease your transition from serial to parallel processing by hiding many of the differences and allowing you to continue using standard AIX tools and techniques. When you start a parallel job, the POE partition manager contacts the remote nodes, begins running your code, and oversees the job's operation.

For more information, refer to IBM Parallel Environment for AIX: Operation and Use, Volume 1.

Xprofiler

This tool helps you analyze your parallel or serial application's performance quickly and easily. It uses procedure profiling information to construct a graphical display of the functions within your application.

Xprofiler provides quick access to the profiled data, which lets you identify the functions that are the most CPU-intensive. The graphical user interface also lets you manipulate the display in order to focus on the application's critical areas.

Xprofiler is a separately installable fileset and you can read more about it in IBM Parallel Environment for AIX: Operation and Use, Volume 2.

pdbx

A parallel line-oriented debugger based on the dbx debugger.

Performance Collection Tool

This tool enables you to collect either MPI and user event data or hardware and operating system profiles for one or more application processes. This tool requires the installation of the Dynamic Probe Class Library (DPCL).

Profile Visualization Tool

This tool helps you to analyze and process profile data files generated by the Performance Collection Tool.

PE documentation

This component is made up of separate filesets that contain the PE documentation. This documentation consists of:

• ppe.html: HTML files that allow you to read the books online (via an HTML browser such as Netscape)
• ppe.pdf: PDF files that allow you to print out copies of the books
• ppe.man: man pages, MPI subroutines, and PE commands and functions