SP Switch power (MAP 0610)

a.Replace the front chassis cable.

b.Return to ªStep 0610-004º on page 1-14 to verify the replacement cable. v If no:

a.Replace the circuit breaker.

b.Return to ªStep 0610-004º on page 1-14 to verify the replacement breaker.

Step 0610-013

You have continuity on all cables.

1.If this is the first time through this step, replace the supervisor card.

v Return to ªStep 0610-004º on page 1-14 to verify the replacement breaker.

vRefer to ªReplacing the switch supervisor cardº on page 4-5.

2.If this is the second time through this step, replace the switch inner chassis.

vReturn to ªStep 0610-004º on page 1-14 to verify the replacement breaker.

vRefer to ªProcedures for switch assembliesº on page 4-2.

3.If you have already replaced the supervisor card and the inner chassis, go to ″Open in 48 V dc distribution (MAP 0560)″ in RS/6000 SP: System Service Guide.

SP Switch function (MAP 0620)

Purpose of this MAP

This MAP provides diagnostic information for problems related to the SP Switch function.

Notes:

1.Refer to ªAppendix Aº inRS/6000 SP: Installation and Relocation for frame-to-frame or switch-to-switch cables. Logical frame to physical frame translation information can also be found in this appendix.

2.Refer to ªService position proceduresº on page 3-9 for placing or removing the switch into or from service position.

Step 0620-001

A message in Perspectives indicated that you have a switch function problem and Table 1-1 on page 1-4directed you to this MAP.

Note: If out.top does not match the physical switch configuration, run Eannotator. (Refer to Parallel System Support Programs for AIX: Installation and Migration Guide, GA22-7347.

1.To complete the following procedures, you will need to have primary node root access. (Customer may enter root password when required.)

2.If either of the following two conditions is true: v Estart has not been run by the customer

vThe CE has already replaced components that might affect the switch. then from the control workstation of the ªprimaryº processor node, enter:

Estart

You should receive a message indicating successful initialization at the primary node. If you receive any other message, consult the ªDiagnosing High Performance Switch Problemsº section ofIBM Parallel System Support Programs for AIX: Diagnosis Guide

3.Determine the primary node number. From an AIX® window on the control workstation, enter:

Eprimary

4.Determine the host name for this node by checking ªreliable_hostnameº for the node number with the command:

Chapter 1. Maintenance Analysis Procedures (MAPs) 1-17

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IBM RS/6000 SP manual SP Switch function MAP, Estart, Eprimary
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RS/6000 SP specifications

The IBM RS/6000 SP (Scalable Power) is a high-performance computing system that was developed in the early 1990s and has since become a significant player in the realm of supercomputing and enterprise solutions. Designed primarily for scientific, engineering, and complex data analysis tasks, the RS/6000 SP provides powerful processing capabilities, enhanced scalability, and features to support demanding applications.

One of the key characteristics of the RS/6000 SP is its modular architecture, which allows for the addition of multiple nodes. Each node is based on IBM's Power architecture, leveraging the RISC (Reduced Instruction Set Computing) design to achieve high throughput and efficiency. The system can support configurations ranging from a few nodes to hundreds, enabling organizations to scale their computational power as needed based on workload requirements.

The RS/6000 SP employs advanced interconnect technologies, most notably the SP Switch, which ensures high-speed communication between nodes. This interconnect allows for seamless data transfer, ensuring that the system can handle large datasets and complex computations without bottlenecks. The SP's ability to deliver concurrent processing capabilities makes it ideal for parallel computing tasks, including simulations, modeling, and large-scale computations.

In terms of software, the RS/6000 SP was equipped with AIX, IBM's version of the UNIX operating system, which provides a stable and secure environment for enterprise applications. Furthermore, the system supports a vast array of programming languages and tools, including Fortran, C, and C++, along with libraries and frameworks designed for high-performance computing. This compatibility allows developers to optimize their applications to fully utilize the underlying hardware.

Another notable feature of the RS/6000 SP is its extensive support for various workloads, including database management, multi-user applications, and graphical processing. The system was equipped with high-performance graphics capabilities, making it suitable for tasks that require intensive visualization, such as computer-aided design (CAD) and scientific visualization.

Overall, the IBM RS/6000 SP has solidified its role in the high-performance computing landscape, combining advanced technologies, robust scalability, and flexibility to meet the unique demands of research and enterprise environments. Its legacy continues to influence modern computing architectures, embodying IBM’s commitment to innovation and performance in the pursuit of complex problem-solving capabilities.
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