Patent Number: 7,103,725

Title: Methods and apparatus for speculative probing with early completion and delayed request

Abstract: According to the present invention, methods and apparatus are provided for increasing the efficiency of data access in multiple processor, multiple cluster systems. A cache coherence controller associated with a first cluster of processors can determine whether speculative probing can be performed before forwarding a data access request to a second cluster. The cache coherence controller can send the data access request to the second cluster if the data access request can not be completed locally.

Inventors: Glasco; David B. (Austin, TX)

Assignee: Newisys, Inc.

International Classification: G06F 12/08 (20060101); G06F 12/16 (20060101)

Expiration Date: 9/05/02018