Conference contribution


A Practitioner's Guide to Software-based Soft-Error Mitigation Using AN-Codes


Publication Details
Author(s): Hoffmann M, Ulbrich P, Dietrich C, Schirmeier H, Lohmann D, Schröder-Preikschat W
Title edited volumes: Proceedings - 2014 IEEE 15th International Symposium on High-Assurance Systems Engineering, HASE 2014
Publisher: IEEE Computer Society
Publication year: 2014
Conference Proceedings Title: Proceedings of the 15th IEEE International Symposium on High Assurance Systems Engineering (HASE '14)
Pages range: 33-40
ISBN: 978-1-4799-3465-2

Event details
Event: Symposium on High Assurance Systems Engineering
Event location: Miami, FL, USA
Start date of the event: 09/01/2014
End date of the event: 11/01/2014
Language: English

Abstract

Arithmetic error coding schemes (AN codes) are a well known and effective technique for soft error mitigation. Although coding theory being a rich area of mathematics, their implementation seems to be fairly easy. However, compliance with the theory can be lost easily while moving towards an actual implementation - finally jeopardizing the aspired fault-tolerance characteristics. In this paper, we present our experiences and lessons learned from implementing AN codes in the Cored dependable voter. We focus on the challenges and pitfalls in the transition from maths to machine code for a binary computer from a systems perspective. Our results show, that practical misconceptions (such as the use of prime numbers) and architecture-dependent implementation glitches occur on every stage of this transition. We identify typical pitfalls and describe practical measures to find and resolve them. Our measures eliminate all remaining SDCs in the Cored voter, which is validated by an extensive fault-injection campaign that covers 100 percent of the fault space for 1-bit and 2-bit errors. © 2014 IEEE.



How to cite
APA: Hoffmann, M., Ulbrich, P., Dietrich, C., Schirmeier, H., Lohmann, D., & Schröder-Preikschat, W. (2014). A Practitioner's Guide to Software-based Soft-Error Mitigation Using AN-Codes. In Proceedings of the 15th IEEE International Symposium on High Assurance Systems Engineering (HASE '14) (pp. 33-40). IEEE Computer Society.

MLA: Hoffmann, Martin, et al. "A Practitioner's Guide to Software-based Soft-Error Mitigation Using AN-Codes." Proceedings of the Symposium on High Assurance Systems Engineering, Miami, FL, USA IEEE Computer Society, 2014. 33-40.

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