Maintaining memory checkpoints across a cluster of computing...

Details Maintaining memory checkpoints across a cluster of computing... Maintaining memory checkpoints across a cluster of computing...

2007-05-18

2010-12-21

Ali, Mohammad (Department: 2158)

Data processing: database and file management or data structures

File or database maintenance

Synchronization

C707S610000

Reexamination Certificate

active

07856421

ABSTRACT:
A method and system for increasing reliability and availability of a multi-processor network. A system includes a network with at least two nodes, with each node comprising a multi-processor unit (mpu) and memory. The mpu includes one or more processors and a wiretap unit. The wiretap unit and the memory included in the node are coupled to the processors in the node. The wiretap unit is configured to monitor memory accesses of the processors and convey data indicative of such accesses to a second node. The second node maintains a replica of memory in the first node, and is configured to undo modifications to the memory if needed. In the event of a hardware or software fault, the nodes are configured to restart the application on another node.

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Anonymous (Wikipedia Definition), “Telephone Tapping”, Feb. 28, 2009, Wikipedia, p. 1.

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