Methods and apparatus for responding to a request cluster

Details Methods and apparatus for responding to a request cluster Methods and apparatus for responding to a request cluster

2002-05-13

2008-07-01

Shah, Sanjiv (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S141000, C711S144000, C711S147000, C711S148000

Reexamination Certificate

active

07395379

ABSTRACT:
According to the present invention, methods and apparatus are provided for increasing the efficiency of data access in a multiple processor, multiple cluster system. A home cluster of processors receives a cache access request from a request cluster. The home cluster includes mechanisms for instructing probed remote clusters to respond to the request cluster instead of to the home cluster. The home cluster can also include mechanisms for reducing the number of probes sent to remote clusters. Techniques are also included for providing the requesting cluster with information to determine the number of responses to be transmitted to the requesting cluster as a result of the reduction in the number of probes sent at the home cluster.

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