Installing and Managing HP-UX Virtual Partitions (includes A.03.03)

CPU, Memory, and IO Resources
CPU: Boot Processor and Dynamic CPU Definitions (vPars A.04)
Chapter 6
177
CPU: Boot Processor and Dynamic CPU Definitions
(vPars A.04)
Beginning with vPars A.04.01, the restrictions of bound CPUs have been removed as well as the terms bound
and unbound. Now, there are two types of processors: boot processors and dynamic CPUs.
The Boot Processor is the CPU on which the OS kernel of the virtual partition was booted. There is one boot
processor per virtual partition. On booting of a virtual partition, the vPars Monitor determines which CPU
becomes the boot processor. Note that the specific CPU chosen as the boot processor may differ across virtual
partition reboots.
Dynamic CPUs are all the other CPUs. because all CPUs, except the boot processors of each virtual
partition, can be dynamically migrated. You can find which CPU is the boot processor by using the
vparstatus command; see “Commands: Displaying Monitor and Resource Information (vparstatus)” on
page 112.
Note that you can only add CPUs that are available. If you are using iCAP (formerly known as iCOD), the
CPUs must be active and authorized by iCAP before you can add it to a virtual partition.
In A.04, all CPUs can process IO interrupts. See “Managing IO Interrupts (vPars A.04, A.03 and earlier)” on
page 194.