Switch Function (MAP 0620)

You should receive a message indicating successful initialization. If you receive any other message, consult the ªDiagnosing SP Switch2 Problemsº section ofParallel System Support Programs for AIX: Diagnosis Guide (GA22-7350).

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:

splstdata -n pg

5.Log into primary node as root using the telnet command: telnet PrimaryNodename

6.Check both errpt -a-N Worm pg and errpt -a-N css0 pg for any switch related problems. If any errors are listed, use the error information, with this MAP, to help isolate the problem.

7.Check the functional state of the switch in the out.top file by issuing the following command on the primary node:

pg /var/adm/SPlogs/css0/p0/out.top Notes:

a.Verify that the timestamp on the out.top file is current (using ls -l /var/adm/SPlogs/css0/p0/out.top).

b.Refer to ″Starting a service call (MAP 0100)″ in RS/6000 SP: System Service Guide for information on using the pg command.

8.Problems are indicated at the end of a text line by the following sequence:

ô# ErrorMessage

±OR±

# ErrorMessage

Error message example:

s 13 2 s 23 2 E01-S17-BH-J4 to E02-S17-BH-J4 2 L: initialized (link is not operational - link failed to time)

For a detailed interpretation of these error messages, refer to the out.top information in Parallel System Support Programs for AIX: Diagnosis Guide (GA22-7350).

9.Does /var/adm/SPlogs/css0/p0/out.top file report any problems?

vIf yes, use the SPS2 Error Conditions table (Table 1-6 on page 1-19)to continue service.

vIf no, go to ªStep 0620-002º.

Step 0620-002

No functional problems found.

1.Have you replaced any components or fixed problems? v If yes:

a.You have resolved the switch problem.

b.Go to ″End of call (MAP 0650)″ in RS/6000 SP: System Service Guide.

vIf no, go to ªStep 0620-003º.

Step 0620-003

You did not find any functional problems and you did not fix or replace anything.

1.Did Estart command start okay?

v If yes, call the next level of support.

vIf no:

a.Consult the ªDiagnosing Switch Problemsº section ofParallel System Support Programs for AIX: Diagnosis Guide (GA22-7350).

1-18RS/6000 SP: SP Switch2 Service Guide

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IBM RS/6000 SP manual Eprimary, Splstdata -n pg, Pg /var/adm/SPlogs/css0/p0/out.top Notes
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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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