Diagnosis Guide

332 MHz SMP Node characteristics

The 332 MHz node was the first SP system SMP node offered in either a thin or wide footprint. Previous SMP nodes were available only as high nodes.

In order to provide an SMP in these denser packages, the power and cooling design is more like that of earlier thin and wide uniprocessor nodes. N+1 power and cooling is not offered for these nodes.

The 332 MHz SMP node is different from other nodes due to these characteristics:

• RPA (RS/6000 Platform Architecture), formerly known as CHRP. Node firmware performs low-level tasks, allowing operating systems like AIX to be less hardware-dependent.

  To see the installed hardware of an RPA node, as discovered and recognized by the firmware, issue this AIX command:

  /usr/lib/boot/bin/dmpdt_chrp
  

• The RPA architecture dictates that there is no key switch on a 332 MHz SMP node. In order for a node to be ready to produce a dump when the node is reset, the AIX command:

  sysdumpdev -K
  

  must be issued before a dump-on-demand condition arises.

  The -K (upper case K) flag is most likely the default for the node. The AIX command:

  sysdumpdev -k
  

  (lower case k) resets the setting.