Service procedures, Personal ESD requirements

Chapter 3. Service procedures

Personal ESD requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Tools and files overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Using the css.snap script . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

css.snap file structure	. . . . . . 3-4
Files collected by css.snap. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
css.snap file package names	.	.	. . .	.	3-6
Disk space handling	.	.	. . .	.	3-6
SP Switch2 supervisor self-test	.	.	. . .	.	3-6
Self-test Conditions	.	.	. . .	.	3-7
Switch supervisor status verification using Perspectives	.	.	. . .	.	3-7

Opening a switch pane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Checking switch status	.	. .	.	3-7
Base code verification	.	. .	.	3-8
Updating the SP Switch2 supervisor code	.	. .	.	3-8
Removing and restoring switch resources	.	. .	.	3-9
Removing an SP Switch2 from the active configuration	.	. .	.	3-9
Restoring an SP Switch2 to the active configuration	.	. .	.	3-9
Using Perspectives to fence and unfence nodes attached to the switch	. . . . 3-10
Fencing nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Unfencing nodes	. .	.	.	3-10

Service position procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Placing an SP Switch2 into service position	.	3-10
Replacing an SP Switch2 from service position	.	3-11
Resetting the clock and bootlist after servicing a node	.	3-11
Running diagnostics on a switch port	.	3-12

Attention: Components in the frame are susceptible to damage from static discharge. Always use an ESD wristband when working inside frame covers. (See ªPersonal ESD requirementsº for more details.) Do not touch the pins or circuitry on these components.

Personal ESD requirements

The processor uses FRUs that are known to be sensitive to electrostatic discharge (ESD). To prevent ESD damage to FRUs or to prevent system failures, observe the following procedures:

vKeep the FRU in its original static-dissipative shipping container until the FRU is ready to be installed in the system. Move the static-dissipative container near the location where the FRU is to be installed (within ESD wrist strap distance). If the FRU must be put down for any reason, first place it in its static-dissipative container or place it on the static-dissipative mat.

vOpen only the covers that are necessary to complete the task. Any time a cover is open the service representative and all people in the area must be ESD-safe. If power is switched on, or if removing or exchanging any FRU, always use the ESD kit (part 93F2649).

1.Put on the ESD wrist strap.

2.Attach the ESD cable to the wrist strap.

3.Attach the ESD mat to the wrist strap, if required.

4.Attach the insulated clip to the ESD cable.

5.Attach the insulated clip to the frame holes labeled ESD. If the frame holes are not available, use a grounding point on the frame.

Tools and files overview

The following three tables provide an overview of the tools, setup files, and tuning files used in the service procedures.

3-1

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.