Table 3-3. Tuning output files (continued)

File (see note)

Location

Description

 

 

 

daemon.stderr

Primary

A record of which nodes were not initialized.

 

 

 

out.top

Primary

Reports errors from the last tuning procedure. It begins as a

 

 

copy of the topology file and errors are indicated to the right of

 

 

each entry.

 

 

 

out.top.old

Primary

A copy of out.top from the previous run.

 

 

 

router.log

Primary

The router log file generated by the route table generator after

 

 

initialization.

 

 

 

router.log.x

All nodes

The route information for a particular node x.

 

 

 

Note: Unless otherwise noted, the directory for these utilities is /var/adm/SPlogs/css.

Using the css.snap script

The css.snap script collects log files created by switch support code (device driver, worm, fault-service, diagnostic tests) into a single package.

Attention: css.snap uses a number of undocumented utilities to collect information. Some of these, like read_regs and the tbXdump routines, can be destructive when used on a running system. After using css.snap to collect diagnostic information, it's best to run /usr/lpp/ssp/css/rc.switch in order to reset/reload the switch adapter and eliminate residual effects of these utilities. This procedure should be used only under the direction of the IBM Support Center.

Note: css.snap is located in the /usr/lpp/ssp/css directory.

Under normal circumstances, it will collect the following:

cable_miswire

 

cable_miswire.old

 

core

(fault service daemon dump file)

css.snap.log

 

css_dump.out

 

daemon.stderr

 

daemon.stdout

 

dtbx.trace

 

dtbx.failed.trace

 

errpt.out

(most recent ’errpt -a’ and ’errpt’ entries)

flt

 

fs_daemon_print.file

 

fs_dump.out

 

netstat.out

(current ’netstat -I css0’ and ’netstat -m’)

out.top

 

rc.switch.log

 

regs.out

 

router.log

 

scan_out.log

 

scan_save.log

 

tb_dump.out

 

vdidl.out

 

worm.trace

 

Chapter 3. Service procedures 3-3

Page 73
Image 73
IBM RS/6000 SP manual Using the css.snap script

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.