gtpm3m0oMulti-Processor Interconnect Facility Reference

Priorities

MPIF supports three types of priorities that can be specified by the user in a SEND Request parameter list:

Requests specifying normal priority are serviced in the order they are issued, using a first-in, first-out method.

A control message request that is waiting to be transferred on the same path and destination as a normal request will be serviced before the normal request. Multiple requests indicating control message priority are treated equally, using the first-in, first-out method.

A request with dispatching priority can specify initial dispatching from the ready list or the input list, in the system to which the SEND request is transferred.