WLM and Process Resource Manager (PRM)

When managing PSETs or FSS groups, the Workload Manager (WLM) and Process Resource Manager (PRM) products both work by modifying and enabling a PRM configuration. WLM uses PRM when a prm structure is included in the WLM configuration. With such configurations, you can use PRM’s informational and monitoring commands such as prmlist and prmmonitor. You can also use the prmrun and prmmove commands, among others. If you use the prmconfig command, invoke it with no options or the -u (unlock) option—do not use the -r (reset) option.

Ordinarily, WLM and PRM should not be used to manage resources on the same system at the same time. In some cases, this might cause inconsistent behavior and undesirable performance. However, you can use both products at the same time if the PRM configuration uses FSS groups only (no PSET-based groups) and the WLM configuration is strictly host-based. A strictly host-based configuration is one that does not include a prm structure; it is designed exclusively for moving cores across HP-UX Virtual Partitions or nPartitions, or for activating Temporary Instant Capacity (TiCAP) cores or Pay per use (PPU) cores. For information on the advantages of using WLM and PRM simultaneously, see “Integrating with Process Resource Manager (PRM)”.

	NOTE: As of WLM A.03.01, PRM is no longer included with the bundle. If PRM C.03.00 or later is already installed on the machine on which you install or upgrade WLM, you can continue to manage FSS and PSET-based workload groups just as if PRM had been installed with WLM—when you purchase WLM, you receive a PRM license that enables you to continue to use PRM. If you install WLM for the first time on a machine, you can use a strictly host-based configuration (no FSS or PSET-based workload groups). However, to manage FSS or PSET-based workload groups, you must install PRM (C.03.00 or later) separately.