HP-UX Virtual Partitions Administrator Guide (includes A.05.09) (5900-2188, March 2012)

Assignments
You assign memory to a virtual partition:
• by size
this uses the nPartition’s ILM.
• by cell and a corresponding size
this uses the specified cell’s CLM.
Within the available nPartition’s ILM or cell’s CLM, you can also:
• specify an address range to use
This does not increase the amount of memory assigned to the virtual partition. The address
range is a specific subset of the existing ILM or CLM amount assigned to the virtual partition.
Therefore, the total amount of memory specified by ILM or CLM addresses cannot exceed the
amount of ILM and CLM assigned to the virtual partition.
NOTE: The virtual partition must be in the down state to add or delete memory resources.
Granularity
Granularity refers to the unit size in which memory is assigned to the all virtual partitions in a given
vPars database (vpdb). You should be careful when using the granularity option; using the
granularity option incorrectly can cause all the virtual partitions to not be bootable. For information,
see “Memory: Granularity Concepts” (page 206).
Memory: Assigning by Size (ILM)
Assigning memory by specifying only size uses ILM memory. ILM memory is the only type of memory
used in vPars A.03.xx and earlier. vPars A.04.xx and later can use either ILM or CLM memory.
Syntax
The basic syntax for adding or deleting ILM resources assigned to a virtual partition is:
-[a|d] mem::size
where:
-a is adding
-d is deleting
size is the quantity of ILM in MBs
Examples
• To create the virtual partition winona2 with 1024 MB of ILM:
winona1# vparcreate -p winona2 -a mem::1024
• To add 1024 MB of ILM to an existing partition winona2:
winona1# vparmodify -p winona2 -a mem::1024
• To decrease the amount of ILM assigned to partition winona2 by 1024 MB:
winona1# vparmodify -p winona2 -d mem::1024
NOTE: Although not an error, the size of ILM assigned should be a multiple of the granularity
value. See also “Memory: Assigning by Size (CLM)” (page 205).
204 CPU, Memory, and I/O Resources (A.04.xx)