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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:
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