Method for tagging uncorrectable errors for symmetric...

Details Method for tagging uncorrectable errors for symmetric... Method for tagging uncorrectable errors for symmetric...

2007-05-22

2007-05-22

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S041000, C714S042000, C714S052000

Reexamination Certificate

active

10340460

ABSTRACT:
A method for identifying, managing, and signaling uncorrectable errors among a plurality of clusters of symmetric multiprocessors (SMPs) detects, manages and reports data errors. The method allows merging of newly detected errors, including memory, cache, control, address, and interface errors, into existing error status. Also, error status is distributed in several possible formats, including separate status signals, special UE (uncorrectable errors) ECC codewords, encoded data patterns, parity error injection, and response codepoints. The error status is also available for logging and analysis while the machine is operating, allowing for recovery and component failure isolation as soon as the errors are detected without stopping the machine.

REFERENCES:
patent: 6536000 (2003-03-01), Jackson et al.
patent: 6594785 (2003-07-01), Gilbertson et al.
patent: 6751756 (2004-06-01), Hartnett et al.
patent: 6823476 (2004-11-01), Williams et al.
patent: 2004/0153842 (2004-08-01), Dickey et al.

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