SP Switch power (MAP 0610)

Step 0610-005

When you put the circuit breaker into the On (`1') position, the circuit breaker tripped into the Off (`0') position.

1.Have the customer remove the SP Switch from the active configuration and power off the SP Switch.

2.Put the switch into service position (refer to ªService position proceduresº on page 3-9).

3.Go to ªStep 0610-010º on page 1-16

Step 0610-006

When you put the circuit breaker into the On (`1') position, the circuit breaker stayed in the On (`1') position.

1.From the control workstation or SP Switch, check Power (green) LED for this switch.

2.Is the Power (green) LED lit?

vIf the Power (green) LED is not lit, go to ªStep 0610-007º.

vIf the Power (green) LED is lit:

a.You have resolved the SP Switch problem.

b.Go to ªSP Switch function (MAP 0620)º on page 1-17 and refer to ªStep 0620-043ºon page 1-36.

Step 0610-007

The Power (green) LED is not lit.

1.Check processor nodes or SP Switches on any other dc power harness for any that are powered on.

2.Ensure that the other processor node or SP Switch has its circuit breaker in the On (`1') position.

3.Check the Power (green) LED for an On or Flashing condition.

4.Processor nodes and SP Switches receive 48-volt power from one of five power harnesses. The sets are as follows:

PDU-BH-P1: PDU-BH-P2: PDU-BH-P3: PDU-BH-P4: PDU-BH-P5:

Frame slots 1, 2, 3, 4 Frame slots 5, 6, 7, 8 Frame slots 9, 10, 11, 12 Frame slots 13, 14, 15, 16 Frame slot 17

5.Is the Power (green) LED on other processor nodes or SP Switches On or Flashing? v If yes, go to ªStep 0610-008º.

vIf no, go to Main power (MAP 0450)in RS/6000 SP: System Service Guide.

Step 0610-008

You found that the Power (green) LED on other processor nodes or switch assemblies is On or Flashing

1.If there is only one SP Switch on the dc power harness, skip the next item and answer ªYesº to the question below.

2.Check all other SP Switches on the same dc power harness as the failing SP Switch and look for the same symptom.

v Look for the circuit breaker on but the Power (green) LED is not lit.

3.Is this the only SP Switch showing this symptom? v If yes, go to ªStep 0610-009º.

v If no, you have a problem with 48 V dc power distribution.

a. Go to Open in 48 V dc distribution (MAP 0560)in RS/6000 SP: System Service Guide.

Step 0610-009

Only one SP Switch is showing the circuit breaker on but the Power (green) LED is not lit.

1.Check cable connections at the frame power unit (see ªStep 0610-007º) and at the SP Switch bulkhead (BH-J1) for good connections.

2.Are the connections good?

Chapter 1. Maintenance Analysis Procedures (MAPs) 1-15

Page 35
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IBM RS/6000 SP manual PDU-BH-P1 PDU-BH-P2 PDU-BH-P3 PDU-BH-P4 PDU-BH-P5

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.