Memory: Concepts and Functionality

Acronyms

ILM

Interleaved Memory.

The nPartition’s system default is to have all memory configured as ILM.
vPars A.03.xx and A.02.xx use and assign only ILM; vPars A.04.xx allows use of ILM and CLM.

CLM

Cell Local Memory.

Using nPartition commands, you can re-configure a portion of a cell’s memory as CLM. Beginning with vPars A.04.01, you can assign an amount of available CLM to a virtual partition.
This capability should be used only if you are an advanced administrator. Further, CLM is meant to be used in conjunction with CLP (cell local processor); not doing so may actually cause performance degradation.

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”.

Memory: Concepts and Functionality

Technical documentation

» Table of Contents

» Glossary

» Index

Acronyms

Assignments

Granularity