nPartition Administrator's Guide

The clm value specifies the amount of memory that will be configured as cell local
memory for the cell.
CAUTION: Memory configured as cell local memory only can be used by operating
systems that support it.
Any memory configured as cell local memory is unusable when an nPartition runs an
operating system that does not support it.
Cell Local Memory Specification You can specify the clm value in either of two forms:
percentage or absolute amount of memory.
— Percentage cell-local memory (CLM).
The percent number can be any number in the range 0-100 with a suffix of %.
This number is rounded to 12.5%, 25%, 37.5%, 50%, 62.5%, 75%, 87.5% or 100%. If
the cell contains less than 4 GBytes of memory, then the percentage is rounded to
25%, 50%, 75% or 100%. Percentages are rounded up or down to the nearest value,
but are not rounded up to 100%.
— Absolute CLM specification. (The default.)
The absolute number is interpreted as an absolute number of gigabytes of memory
and can optionally have a suffix of GB.
As needed, an absolute CLM specification is rounded up to the nearest 0.5 GBytes.
If the clm value is rounded, the command reports the final value used. For details, refer
to the parmodify(1M) manpage.
4. Reboot the nPartition to use the cells' new attribute values.
On cell-based servers based on the HP sx1000 chipset or HP sx2000 chipset, if you have
changed cell local memory (CLM) values then you must reboot the nPartition whose CLM
values have changed (HP-UX: shutdown -r; Windows: shutdown /r; Linux: shutdown
-r time; OpenVMS: @SYS$SYSTEM:SHUTDOWN with an automatic system reboot). If you
also are changing use-on-next-boot values then also use the following guidelines.
If you have changed any cell use-on-next-boot settings for the nPartition then reboot the
nPartition in either of two ways:
• Perform a standard reboot (HP-UX: shutdown -r; Windows: shutdown /r; Linux:
shutdown -r time; OpenVMS: @SYS$SYSTEM:SHUTDOWN with an automatic system
reboot).
If you have only changed use-on-next-boot values from y to n, then perform a reboot.
Any cells set to not be used will still be assigned to the nPartition but will not be used
(will not rendezvous) in the nPartition.
• Perform a reboot for reconfig (HP-UX: shutdown -R; Windows: shutdown /r; Linux:
shutdown -r time; OpenVMS: @SYS$SYSTEM:SHUTDOWN with an automatic system
reboot).
If you have changed any use-on-next-boot values from n (do not use on next boot) to
y (use the cell on next boot), then you must perform a reboot for reconfig to allow the
currently inactive cells to reboot and rendezvous when the nPartition reboots.
Procedure 6-23 Setting Cell Attributes (Partition Manager)
You can set cell attributes by using Partition Manager.
When using Partition Manager Version 1.0, select the nPartition to which the cell belongs, select
the Partition→Modify Partition action, Change Cell Attributes tab, select the cell(s), and click
Modify Cell(s).
194 Creating and Configuring nPartitions