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On the Impact of Hardware Faults – An Investigation of the Relationship between Workload Inputs and Failure Mode Distributions

Domenico Di Leo ; Fatemeh Ayatolahi (Institutionen för data- och informationsteknik, Datorteknik (Chalmers)) ; Behrooz Sangchoolie (Institutionen för data- och informationsteknik, Datorteknik (Chalmers)) ; Johan Karlsson (Institutionen för data- och informationsteknik, Datorteknik (Chalmers)) ; Roger Johansson (Institutionen för data- och informationsteknik, Datorteknik (Chalmers))
Computer Safety, Reliability, and Security. Eds: Frank Ortmeier, Peter Daniel. SAFECOMP, Mageburg, Germany, September 25-28, 2012. (0302-9743). Vol. 7612 (2012), p. 198-209.
[Konferensbidrag, refereegranskat]

Technology scaling of integrated circuits is making transistors increasingly sensitive to process variations, wear-out effects and ionizing particles. This may lead to an increasing rate of transient and intermittent errors in future microprocessors. In order to assess the risk such errors pose to safety critical systems, it is essential to investigate how temporary errors in the instruction set architecture (ISA) registers and main memory locations influence the behaviour of executing programs. To this end, we investigate – by means of extensive fault injection experiments – how such errors affect the execution of four target programs. The paper makes three contributions. First, we investigate how the failure modes of the target programs vary for different input sets. Second, we evaluate the error coverage of a software-implemented hardware fault tolerant technique that relies on triple-time redundant execution, majority voting and forward recovery. Third, we propose an approach based on assembly language metrics which can be used to correlate the dynamic fault-free behaviour of a program with its failure mode distribution obtained by fault injection.

Nyckelord: microprocessor faults, fault injection, dependability assessment, software-implemented hardware fault tolerance, failure mode distributions.

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Denna post skapades 2012-11-03. Senast ändrad 2013-04-29.
CPL Pubid: 165424


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