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Using the PPU Software
Understanding Utilization Capping
Chapter 442
Understanding Utilization Capping
You are billed by HP according to the usage of the active processors in
your PPU system. For example, on a 32 processor Superdome system,
you are billed the same amount whether you utilize all 32 processors at
50% utilization, or if you utilize 16 processors at 100% utilization.
There are three methods to cap the usage of processors on your PPU
system:
1. Workload Manager (WLM) — WLM in combination with PPU is a
solid answer for customers asking for a utility answer to their
computing resource needs. WLM can address both fixed resource
capping (that is, placing an upper bound on utilization) as well as
dynamic resource allocation to address service level objectives. See
the most current HP-UX Workload Manager User's Guide for details.
2. Partition Manager (Parmgr) — With Parmgr, you can assign/activate
or unassign/deactivate cells in order to control the number of active
processors. See the most current guide HP System Partitions:
Administration for nPartitions for details.
3. Deconfigure — You can use the CPU command, in the HP-UX boot
console handler (BCH) to control the number of available processors
in your PPU system/partition. Basically, the procedure is:
A) Reboot your PPU system and stop the boot process at BCH
B) At BCH, deconfigure the desired processors per configuration
rules
C) Boot the PPU system