SP Switch function (MAP 0620)

Step 0620-013

An SRN listed in Table 1-9 on page 1-24indicated that you have a switch clock problem and Priority 2 in Table 1-10 on page 1-27directed you to this step.

1.Check the switch clock selections on the ªproblemº switches .

2.Do the clock settings on the ªproblemº SP Switches appear to be okay?

vIf yes, go to ªStep 0620-014º.

vIf no

a.Change the clock selections on the appropriate switches (refer to ªSelecting appropriate switch clocksº on page 3-6).

b.Go to ªStep 0620-043º on page 1-36 to verify fix.

Step 0620-014

The clock settings on the ªproblemº SP Switches appear to be okay.

1.Is an external clock selected?

v If yes, go to ªStep 0620-016º.

vIf no, go to ªStep 0620-015º.

Step 0620-015

An external clock is not selected. This indicates that you have a defective master clock card.

1.Is this the only switch in this system? v If yes:

a.Replace the switch assembly.

b.Go to ªStep 0620-043º on page 1-36 to verify fix.

vIf this is not the only switch in this system, go to ªStep 0620-016º.

Step 0620-016

The system you are working on either has an external clock or the system uses more than one switch.

1.Have the customer select an alternate clock (via the Eclock command.

2.Issue the Estart command.

3.Does the switch run?

v If yes, go to ªStep 0620-018º.

vIf no:

a.Replace the switch assembly.

b.Go to ªStep 0620-043º on page 1-36 to verify fix.

Step 0620-017

An SRN listed in Table 1-9 on page 1-24indicated that you have a software problem and Priority 1 in Table 1-10 on page 1-27directed you to this step.

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 0620-018º.

Step 0620-018

At this point, you must run the advanced diagnostics in service mode on the device ªcss0º and its associated switch port.

1.Did you get an SRN from the diagnostics?

v If yes, go to ªStep 0620-020º on page 1-29.

v If no, go to ªStep 0620-019º on page 1-29.

1-28RS/6000 SP: SP Switch Service Guide

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IBM manual 28RS/6000 SP SP Switch 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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