Cache coherence directory eviction mechanisms for modified...

Details Cache coherence directory eviction mechanisms for modified... Cache coherence directory eviction mechanisms for modified...

2005-07-19

2005-07-19

Kim, Hong (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S144000, C711S145000, C711S133000, C711S159000, C709S218000

Reexamination Certificate

active

06920532

ABSTRACT:
Cache coherence directory eviction mechanisms are described for use in computer systems having a plurality of multiprocessor clusters. Interaction among the clusters is facilitated by a cache coherence controller in each cluster. A cache coherence directory is associated with each cache coherence controller identifying memory lines associated with the local cluster which are cached in remote clusters. The cache coherence controller is operable to initiate eviction of an entry in its directory corresponding to a modified copy of a memory line by sending a request to merge an empty data field with the modified copy of the memory line to a corresponding memory controller.

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