MULTIPROCESSOR SYSTEM AND INTERRUPT ARBITER THEREOF

摘要

In a tightly coupled multiprocessor system, I/O interrupts are distributed to respective processors in accordance with load conditions of the processors. Interrupt arbitration circuits provided in respective processors receive an interrupt request from an I/O device, effect interrupt arbitration using a parameter indicating the load condition of each processor as a first interrupt priority PPR. If the arbitration fails to determine a sole processor, additional arbitration finally selects a sole processor on the basis of the second interrupt priority RRPR which is variable circularly.