SP Switch function (MAP 0620)

Table 1-10. Switch problem priority listing

 

 

 

 

 

 

Priority

Failing component

Action

 

 

 

 

 

1

Software

a. Have customer verify that the software is configured

 

(1 of 7)

 

and operating correctly for this processor

 

 

node/system.

 

 

 

b. If no problem is found, continue with next highest

 

 

 

priority item in the list for this SRN.

 

 

 

c. Otherwise, power off this processor node and continue

 

 

 

service at ªStep 0620-017º on page 1-28.

 

 

 

 

 

2

External clock

a. Check to see if a switch clock cable is connected at

 

(2 of 7)

 

switch adapter of this processor node.

 

 

b. If clock cable exists, reseat switch clock cable;

 

 

 

otherwise reseat switch data cable.

 

 

 

c. Run advanced diagnostics on the device ªcss0º and its

 

 

associated switch port.

 

 

d. If diagnostics fail with the previous SRN, check at

 

 

least one other processor node for indication of a

 

 

clock problem. If necessary, run advanced diagnostics

 

 

on this other node, using the device ªcss0º and its

 

 

associated switch port.

 

 

e. If more than one node has a clock problem, go to

 

 

ªStep 0620-013º on page 1-28.

 

 

f. Replace the switch clock cable or switch data cable

 

 

that was just reseated in step 2 above.

 

 

g. Continue service at ªStep 0620-018º on page 1-28.

 

 

 

 

3

Data cable

a. Reseat switch data cable at switch adapter of this

(3 of 7)

 

processor node.

 

b. Run advanced diagnostics on the device ªcss0º and

 

 

its associated switch port.

 

 

c. If diagnostics fail with the previous SRN, replace

 

 

switch data cable.

 

 

d. Continue service at ªStep 0620-018º on page 1-28.

 

 

 

 

4

SPS Adapter

a. Replace the switch adapter card on this processor

(4 of 7)

SP System Attachment

node.

Adapter

b. Reconnect all cables to the processor node.

 

 

c. Continue service at ªStep 0620-018º on page 1-28.

 

 

Note: Before disconnecting cables or performing service

 

 

actions on an SP-Attached Server, perform ″Decoupling

 

 

and coupling code for SP-Attached Servers″ in RS/6000

 

 

SP: System Service Guide.

 

 

 

 

5

System or I/O planar

a. Run advanced diagnostics on the ªBase Systemº or

(5 of 7)

 

I/O planar. If a problem is detected, use SRN to

 

service.

 

 

b. Replace the system or I/O planar on this processor

 

 

node. Make sure to reinstall all parts and cables.

 

 

c. Reconnect all cables to the processor node.

 

 

d. Continue service at ªStep 0620-018º on page 1-28.

 

 

 

 

6

Wrap plug or

Check the wrap plug or terminator again to make sure

(6 of 7)

Terminator

that it is not at fault.

 

 

 

 

 

 

 

7

All components replaced.

Call next level of support.

(7 of 7)

 

 

 

 

 

 

 

Chapter 1. Maintenance Analysis Procedures (MAPs) 1-27

Page 46 Page 48
Page 47
Image 47
IBM RS/6000 SP manual Priority Failing component Action
Page 46 Page 48

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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