IBM manual 30RS/6000 SP SP Switch Service Guide

Page 50

SP Switch function (MAP 0620)

Note: When unplugging the two ends of the suspect cable, check /var/adm/SPlogs/css/out.top to verify only two (2) ports were lost. If four (4) ports were lost, then two cables were swapped across that switch to switch connection. Connect the cables correctly and check /var/adm/SPlogs/css/out.top for any other errors.

2.If this is a switch-to-switchconnection, have customer update the switch configuration file appropriately (to show wrap plugs) before continuing:

v For code level 1.02 and higher, use the Etopology command.

3.Make sure processor nodes that were put in ªServiceº mode are returned to ªNormalº mode. Make sure all processor nodes are IPLed completely.

4.Have customer verify that the switch code is running on all processor nodes.

5.From the control workstation of the ªprimaryº processor node, typeEstart followed by ENTER.

6.Check /var/adm/SPlogs/css/out.top file for problems regarding the jacks indicated.

7.Does out.top file show a problem on any jacks indicated? v If yes:

a.Problem is in the SP Switch which is still reporting a problem.

b.Go to ªStep 0620-041º on page 1-35 to service or replace the switch assembly.

vIf no:

a.If this is a switch-to-switchconnection, remove both wrap plugs from the SP Switches.

b.Replace the frame-to-frame switch data cable that was disconnected before.

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

Step 0620-024

Problem reported with all switch data cables from one or more frames. This may be caused by a clocking or grounding problem between frames.

Note: The ªmaster-clockº switch indicates the switch which is supplying the master clock for the systemÐthe master clock will have the clock input multiplexor set to ªinternal clockº (0). A ªproblemº switch indicates any switch which is experiencing problems.

1.Check the switch clock selections on the ªproblemº switches (refer to ªSelecting appropriate switch clocksº on page 3-6).

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

vIf yes, go to ªStep 0620-025º.

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 0620-025

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

1.Is the problem switch in a frame with processor nodes?

v If yes, go to ªStep 0620-032º on page 1-32.

vIf no, go to ªStep 0620-026º.

Step 0620-026

Problem switch is in a switch frame (contains switches only, no processor nodes).

1.From Perspectives on the control workstation, open the Switch Front Panel window for this switch.

2.Check the clock selection to see if it is set to Internal or to one of the following external clocks: v For SP switch types: ªJack3º, ªJack4º, or ªJack5º.

3.Is the clock selection set to one of the External clocks?

1-30RS/6000 SP: SP Switch Service Guide

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Contents IBM Page IBM Fifth Edition April Contents FRU removals and replacements Figures Vi RS/6000 SP SP Switch Service Guide Tables ViiViii RS/6000 SP SP Switch Service Guide Safety and environmental notices Safety noticesRS/6000 SP SP Switch Service Guide SPSFD017 Xii RS/6000 SP SP Switch Service Guide Laser safety information Environmental notices Product recycling and disposalXiv RS/6000 SP SP Switch Service Guide Related information About this bookWho should use this book How to send your comments Summary of changes Xviii RS/6000 SP SP Switch Service Guide Maintenance Analysis Procedures MAPs Switch description and problem determination MAP Flashing Power GreenEnvironment Yellow Errors in /var/adm/SPlogs/css/out.top see Priority Message or condition ActionSP Switch environment MAP Condition ActionSwitch connector resistance values Step SP Switch inner chassis and front chassis cables Priority Component ActionStep 10RS/6000 SP SP Switch Service Guide Step 12RS/6000 SP SP Switch Service Guide SP Switch power MAP SP Switch power MAP PDU-BH-P1 PDU-BH-P2 PDU-BH-P3 PDU-BH-P4 PDU-BH-P5 From From P1 pinEprimary SP Switch function MAPEstart Splstdata -n pg Pg /var/adm/SPlogs/css/out.top NotesSP Switch function MAP Splstdata -s pg Error # Message/condition Description and actionIf the cabling does not match, correct the cabling SDRGetObjects DependentNodeL03-N01 L01-S00-BH-J18E02-S00-BH-J18 E02-N04Priority Message/condition Action Var/adm/SPlogs/css/out.top file haveStep Service Request Number Failing components DescriptionSRN 26RS/6000 SP SP Switch Service Guide Priority Failing component Action 28RS/6000 SP SP Switch Service Guide Step 30RS/6000 SP SP Switch Service Guide Estart Do not perform the cable wrap test Step Do not perform cable wrap test Step Check /var/adm/SPlogs/css/out.top file Format structure LocationsNaming standard for RS/6000 SP components Location diagrams of the RS/6000 SP components Major assemblyFront and rear views of RS/6000 SP frame Figure notes2shows a front view of the RS/6000 SP multi-switch frame Front view of 49-inch frame locations. See notes below Frame locations Frame FRAExample E01-FRA-G1 Switch assembly locations Air BaffleConnector details Cable routing10RS/6000 SP SP Switch Service Guide Cable routing in a multi-switch frame F/C 2030/1 12RS/6000 SP SP Switch Service Guide Switch data cables Cable Part Plug from Plug to Number Location14RS/6000 SP SP Switch Service Guide Tools and files overview Service proceduresPersonal ESD requirements Ifconfig Utility see note Runs on Description FaultserviceWormRTGRc.switch File see note Location Description Rc.switch.logUsing the css.snap script Node supervisor verification Switch supervisor self-testVerification tests using Perspectives Self-test Conditions Pass sequenceSwitch supervisor verification Frame supervisor verificationDetermining the correct switch clock source Selecting appropriate switch clocksSelecting the switch clock source EclockNumber of Logical Master Clock Choice Model Frames Removing and restoring switch resourcesRemoving a switch assembly from the active configuration Restoring a switch assembly to the active configuration Viewing switch partitionsEfence of primary and primary backup nodes Replacing a switch assembly from service positionResetting the clock and bootlist after servicing a node Installing firmware updates on SP nodes Installing adapter microcode packagesAdapter Package Running diagnostics on a switch port FRU removals and replacements Handling static-sensitive devicesReplacing the switch assembly Procedures for switch assembliesRemoving the switch assembly Removing the switch front chassis cable Removing the switch fansReplacing the switch fans Replacing the switch front chassis cable Removing the switch supervisor cardReplacing the switch supervisor card Removing the switch inner chassis cableReplacing the switch inner chassis cable Removing the switch power cardsReplacing the switch power cards Removing the SP Switch power supply cards8RS/6000 SP SP Switch Service Guide Parts catalog SPS, SPS-8 Switch assembly feature view Assembly Part number Units Description Index 4RS/6000 SP SP Switch Service Guide Inner chassis assembly SPS includes all assembly in shaded Air flow Cable, front chassis SP Switch External Cables SPS SPS-8 Switch cables featureSP Switch Data Cables SPS-8 Parts catalog Multi-switch frame F/C 2030/1 Multi-switch frame F/C 2030/1 12RS/6000 SP SP Switch Service Guide Trademarks Industry Canada compliance statement United Kingdom telecommunications safety requirementsEuropean Union EU statement Radio protection for Germany For installations in JapanElectromagnetic interference EMI statement Taiwan 4RS/6000 SP SP Switch Service Guide Index Numerics ESD Switch inner chassis cable, SPS Switch partitioning 4RS/6000 SP SP Switch Service Guide Please tell us how we can improve this book Readers comments ± Wed like to hear from youHow satisfied are you that the information in this book is IBM Page IBM
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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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