Chapter 1. Understanding The Ibm Power Systems 775 Cluster - IBM Power Systems 775 Manual

Understanding the IBM Power
Chapter 1.
Systems 775 Cluster
In this book, we describe the new IBM Power Systems 775 Cluster hardware and software.
The chapters provide an overview of the general features of the Power 775 and its hardware
and software components. This chapter helps you get a basic understanding and concept of
this cluster.
Application integration and monitoring of a Power 775 cluster is also described in greater
detail in this IBM Redbooks publication. LoadLeveler, GPFS, xCAT, and more are
documented with some examples to get a better view on the complete cluster solution.
Problem determination is also discussed throughout this publication for different scenarios
that include xCAT configuration issues, Integrated Switch Network Manager (ISNM), Host
Fabric Interface (HFI), GPFS, and LoadLeveler. These scenarios show the flow of how to
determine the cause of the error and how to solve the error. This knowledge compliments the
information in Chapter 5, "Maintenance and serviceability" on page 265.
Some cluster management challenges might need intervention that requires service updates,
xCAT shutdown/startup, node management, and Fail in Place tasks. Documents that are
available are referenced in this book because not everything is shown in this publication.
This chapter includes the following topics:
Overview of the IBM Power System 775 Supercomputer
Advantages and new features of the IBM Power 775
Hardware information
Power, packaging, and cooling
Disk enclosure
Cluster management
Connection scenario between EMS, HMC, and Frame
High Performance Computing software stack
© Copyright IBM Corp. 2012. All rights reserved.
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