Fingerprinting

Jared C. Smolens, Brian T. Gold, Jangwoo Kim, Babak Falsafi, James C. Hoe, Andreas G. Nowatzyk
2004 SIGARCH Computer Architecture News  
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 » ... nting tightly bounds 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:10.1145/1037947.1024420 fatcat:fokczd32qrg3posw6ftcin362m