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zIIP Processor

IBM offers an optional specialty processor type know as a z/architecture Integrated Information Processor (zIIP processor). The zIIP processor lets you offload specific types of work from a general processor or CP.

The type of work that is capable or allowed to execute on a zIIP processor is limited to SRB-mode work executing in an Enclave.

SRB-mode has requirements that can limit the type and amount of code that is eligible to run in SRB-mode and therefore on a zIIP processor. Because of the limitations, not all code can run on a zIIP processor.

Example requirements or limitations:

Note: Branch entry WTOs may impact your automation and you should consult with you automation team.

This section contains the following topics:

Determine Work Volume

Enable Exploitation of zIIP Processing

Determine Exploitation of zIIP Processors