Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Patent
1998-02-13
2000-11-14
Chan, Eddie P.
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
711145, 709213, G06F 1200
Patent
active
061483753
ABSTRACT:
A method of maintaining cache coherency in a shared memory multiprocessor system having a plurality of nodes, where each node itself is a shared memory multiprocessor. With this invention, an additional shared owner state is maintained so that if a cache at the highest level of cache memory in the system issues a read or write request to a cache line that misses the highest cache level of the system, then the owner of the cache line places the cache line on the bus interconnecting the highest level of cache memories.
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Baylor Sandra Johnson
Hsu Yarsun
Cameron Douglas W.
Chan Eddie P.
Drumheller Ronald L.
International Business Machines - Corporation
Verbrugge Kevin
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