Fingerprinting

Jared C. Smolens, Brian T. Gold, Jangwoo Kim, Babak Falsafi, James C. Hoe, Andreas G. Nowatzyk
2004 Proceedings of the 11th international conference on Architectural support for programming languages and operating systems - ASPLOS-XI  
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, that detects differences in execution across a dual modular redundant (DMR) processor pair. Fingerprinting summarizes a processor's execution history in a hash-based signature; differences between two mirrored processors are exposed by comparing their fingerprints. Fingerprinting tightly
more » ... detection latency and greatly reduces the interprocessor communication bandwidth required for checking. This paper presents a study that evaluates fingerprinting against a range of current approaches to error detection. The result of this study shows that fingerprinting is the only error detection mechanism that simultaneously allows high-error coverage, low error detection bandwidth, and high I/O performance.
doi:10.1145/1024393.1024420 dblp:conf/asplos/SmolensGKFHN04 fatcat:yp6lbocm7jcondwkxqx6wr3t3q