Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Reexamination Certificate
2006-09-12
2006-09-12
Thai, Tuan V. (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
C711S118000, C711S141000
Reexamination Certificate
active
07107410
ABSTRACT:
The disclosed embodiments relate to exclusive status tags. A multiprocessor computer system may include multiple processors and caches that may be managed by a directory or snooping. To optimize the performance of the system, the status and ownership information of the cache lines in exclusive state may be located in a separate cache, a separate portion of the memory, or separate circuitry. By having the status and ownership information in an additional logic, the multiprocessor computer system can operate in a more efficient manner by having an exclusive status tag logic limit the traffic to a collection of status tags, such as a directory or act as a coherence filter.
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