Switch Function (MAP 0620)

1.From the node front panel on the control workstation, put the node in the SERVICE mode.

2.Power-on this processor node.

3.Go to ªStep 0620-014º.

Step 0620-014

At this point, you must run the advanced diagnostics in service mode on the device ªcssXº (where X=0 or 1) and its associated switch port.

1.Did you get an SRN from the diagnostics? v If yes, go to ªStep 0620-016º.

vIf no, go to ªStep 0620-015º.

Step 0620-015

Since the diagnostics did not return an SRN, no problem was detected.

1.Have you just reseated, repaired, or replaced a component? v If yes, go to ªStep 0620-021º on page 1-27 to verify fix.

vIf no:

a.Problem is in the switch assembly.

b.Go to ªStep 0620-020º on page 1-27 to service or replace switch assembly.

Step 0620-016

The advanced diagnostics returned an SRN indicating that the diagnostics detected a problem. 1. Is this SRN the same as the previous SRN?

vIf yes, go to ªStep 0620-011º on page 1-24 to perform service on the next highest priority component in the list for this SRN.

vIf no, go to ªStep 0620-012º on page 1-25 to service the new SRN.

Step 0620-017

An error message in the /var/adm/SPlogs/css0/p0/out.top file indicated that you either have an external switch connection problem. Priority 3 in Table 1-7 on page 1-22directed you to this step.

1.Check the specified jacks at rear of switch assemblies for an obvious problem such as a loose connection.

2.Pay special attention to cables that may have been moved recently.

3.Do connections appear to be okay? v If yes, go to ªStep 0620-018º.

vIf no:

a.Fix the obvious connection problem.

b.Go to ªStep 0620-021º on page 1-27 to verify fix.

Step 0620-018

The /var/adm/SPlogs/css0/p0/out.top file indicated a switch problem and all connection appeared to be okay.

Note: Be aware that in large systems, connections for switch assemblies not in the multi-switch frame are usually scattered throughout the out.top file.

1.If this is a multi-frame system, check the indicated interposers against the wiring charts for multi-frame switch systems.

2.Is this a multi-frame system with problems reported on all switch data cables from one or more switches?

v If yes:

a.Determine if a power or environmental problem exists on that switch.

b.Go to ªStep 0590-003º on page 1-4.

1-26RS/6000 SP: SP Switch2 Service Guide

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IBM manual 26RS/6000 SP SP Switch2 Service Guide
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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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