Fingerprinting

• DOI: 10.1145/1024393.1024420
• Publication Date: 2004-10-07T13:39:48Z
• Authors: Jared C. Smolens; Brian T. Gold; Jangwoo Kim; Babak Falsafi; James C. Hoe; Andreas G. Nowatzyk
• Keywords: Microprocessor; Soft error; Signature (topology); Word error rate

Recent studies have suggested that the soft-error rate in microprocessor logic will become a reliability concern by 2010. This paper proposes an efficient error detection technique, called fingerprinting, detects differences execution across dual modular redundant (DMR) processor pair. Fingerprinting summarizes processor's history hash-based signature; between two mirrored processors are exposed comparing their fingerprints. tightly bounds latency and greatly reduces interprocessor communication bandwidth required for checking. presents study evaluates fingerprinting against range of current approaches to detection. The result this shows is only mechanism simultaneously allows high-error coverage, low bandwidth, high I/O performance.