Error detection/correction and fault detection/recovery – Pulse or data error handling – Error/fault detection technique
Reexamination Certificate
2008-06-03
2008-06-03
Lamarre, Guy J. (Department: 2112)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Error/fault detection technique
C714S770000, C714S758000, C714S100000
Reexamination Certificate
active
07383490
ABSTRACT:
Methods and apparatus perform fault isolation in multiple node computing systems using commutative error detection values for—example, checksums—to identify and to isolate faulty nodes. When information associated with a reproducible portion of a computer program is injected into a network by a node, a commutative error detection value is calculated. At intervals, node fault detection apparatus associated with the multiple node computer system retrieve commutative error detection values associated with the node and stores them in memory. When the computer program is executed again by the multiple node computer system, new commutative error detection values are created and stored in memory. The node fault detection apparatus identifies faulty nodes by comparing commutative error detection values associated with reproducible portions of the application program generated by a particular node from different runs of the application program. Differences in values indicate a possible faulty node.
REFERENCES:
patent: 3451042 (1969-06-01), Jensen et al.
patent: 4982401 (1991-01-01), Box
patent: 7278083 (2007-10-01), Haswell et al.
Almasi Gheorghe
Blumrich Matthias Augustin
Chen Dong
Coteus Paul
Gara Alan
Harrington & Smith PC
International Business Machines - Corporation
Lamarre Guy J.
LandOfFree
Methods and apparatus using commutative error detection... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus using commutative error detection..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus using commutative error detection... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2814559