MULTIPROCESSOR COMPUTER SYSTEM WITH MULTIPLE COHERENCY REGIONS AND SOFTWARE MIGRATION ACROSS COHERENCY REGIONS WITHOUT CACHE PURGES

摘要

PPROBLEM TO BE SOLVED: To provide a multiprocessor computer system comprising a plurality of coherency regions and software migration across coherency regions without cache purges. PSOLUTION: By using an active coherency region information table 14 relating to each processor 10', it is determined when conventional technology of cache situation transition is executed. A supervisor program initializes the table relating to each processor 10'. A table entry is created every coherency region which the supervisor program is going to use on the processor 10'. A unique coherency region ID is assigned to each coherency region, and the supervisor program can associate the ID to all the software process accessing to memory addresses included in the coherency regions. PCOPYRIGHT: (C)2005,JPO&NCIPI