HP-UX Workload Manager User's Guide

Integration with other products
Integrating with Process Resource Manager (PRM)
Appendix D404
Integrating with Process Resource Manager
(PRM)
You can use WLM to control resources that are managed by PRM. 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 could 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.)
You might want to use both products to take advantage of certain
features of PRM that are not included with the latest release of WLM,
such as PRM’s CPUCAPOFF mode, enabled with the prmconfig -M
CPUCAPOFF command. (In this mode, a PRM group’s upper bound for CPU
resource consumption is determined by the CAP value, available on
HP-UX 11i v3 and later. For more information, see the HP Process
Resource Manager User’s Guide or prmconfig(1M).)