Methods and apparatus for speculative probing of a remote...

Details Methods and apparatus for speculative probing of a remote... Methods and apparatus for speculative probing of a remote...

2005-03-08

2005-03-08

Verbrugge, Kevin (Department: 2188)

Electrical computers and digital processing systems: multicomput

Computer conferencing

Demand based messaging

C709S216000, C709S217000, C711S141000, C711S146000

Reexamination Certificate

active

06865595

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. Techniques are provided for speculatively probing a remote cluster from either a request cluster or a home cluster. A speculative probe associated with a particular memory line is transmitted to the remote cluster before the cache access request associated with the memory line is serialized at a home cluster. When a non-speculative probe is received at a remote cluster, the information associated with the response to the speculative probe is used to provide a response to the non-speculative probe.

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HyperTransport ™ I/O Link Specification Revision 1.03, HyperTransport ™ Consortium, Oct. 10, 2001, Copyright© 2001 HyperTransport Technology Consortium.

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