White Paper on Dynamic Processor Deallocation and Dynamic Processor Resilience

Dynamic Processor Resilience and HP Predictive Support
HP Predictive Support is a facility provided to HP Support customers that detects and
predicts certain failures on customer systems and reports them directly to HP.
Dynamic Processor Resilience is indirectly supported by this facility. While HP
Predictive does not currently relay the events generated by the LMPC monitor back to
HP, it does monitor the status of all processors on the system, senses when a processor
has been deallocated, and reports it back to HP.
For further details on HP Predictive Support, contact your local HP Support office.
Availability of Dynamic Processor Resilience
EMS is provided free of charge as part of the IPR/Diagnostic media, starting with the
June 1999 release. When installed, EMS is enabled by default, including the CPU
monitor, providing immediate protection against avoidable processor failures. This
monitor is available on HP-UX 11.0 for V-Class and N-Class systems.
NOTE: It is highly recommended that EMS remain enabled at all times. Disabling
EMS will result in loss of the protection offered by Dynamic Processor
Resilience.
Future Enhancements
Several enhancements to Dynamic Processor Deallocation and Dynamic Processor
Resilience are under investigation. These include:
• Enhance Dynamic Processor Deallocation to migrate I/O interrupts off of deallocated
processors.
• Enhance Dynamic Processor Deallocation to enable deallocation of the monarch
processor.