Technical data

Introduction to nPartitions
HP Superdome Partition Configuration Guidelines
HP System Partitions Guide: Administration for nPartitions—rp7410
EMSP—[e-mail]
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HP Superdome Partition Configuration
Guidelines
On HP Superdome servers, the locations of the cells you assign to each
nPartition and the resulting loads on server interconnections can affect
system performance within the server’s nPartitions.
HP offers specific guidelines for configuring nPartitions on HP
Superdome servers in order to ensure good system performance.
NOTE The guidelines in this section apply to HP Superdome servers only.
These guidelines follow two basic configuration principles:
1. Avoid sharing interconnecting hardware (crossbars and crossbar
links) among multiple nPartitions.
2. Minimize the number of crossbar links used by each nPartition, but
do not overload crossbar links by creating partitions that can
generate more cell communications traffic across the links than the
links can support. Overloading crossbar links degrades performance.
The above principles are incorporated into the guidelines below, and are
accounted for in the charts of recommended HP Superdome partitions.
Also refer to the nPartition Requirements and Recommendations section
for other details.
HP Superdome
nPartition
Guidelines
Use these guidelines to help determine which cells to assign to the
nPartitions you create on HP Superdome servers.
• Define partitions in order of size.
Assign cells to the partition that has the largest cell count first. Then
select cells for the next largest partition, and so on, and finally choose
cells for the partition with the fewest cells last.
This provides more appropriate cell assignments for larger partitions
(those with more cells). Any smaller partitions with fewer cells are
more easily accommodated in the remaining, available cells.
HP Restricted / DRAFT
DRAFT NOV 2001