Bit Impact Factor: Towards making fair vulnerability comparison

Reliability is becoming a major design concern in contemporary microprocessors since soft error rate is increasing due to technology scaling. Therefore, design time system vulnerability estimation is of paramount importance. Architectural Vulnerability Factor (AVF) is an early vulnerability estimati...

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Bibliographic Details
Published inMicroprocessors and microsystems Vol. 38; no. 6; pp. 598 - 604
Main Authors Can, Serdar Zafer, Yalcin, Gulay, Ergin, Oguz, Unsal, Osman Sabri, Cristal, Adrian
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.2014
Subjects
Architectural vulnerability factor
Architecture
Clocks
Design engineering
Fault injection
Impact analysis
Methodology
Microprocessors
Soft errors
Vulnerability
Architectural vulnerability factor
Vulnerability
Fault injection
Soft errors
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Summary:Reliability is becoming a major design concern in contemporary microprocessors since soft error rate is increasing due to technology scaling. Therefore, design time system vulnerability estimation is of paramount importance. Architectural Vulnerability Factor (AVF) is an early vulnerability estimation methodology. However, AVF considers that the value of a bit in a clock cycle is either required for Architecturally Correct Execution (i.e. ACE-bit) or not (i.e. unACE-bit); therefore, AVF cannot distinguish the vulnerability impact level of an ACE-bit. In this study, we present a new dimension which takes into account the vulnerability impact level of a bit. We introduce Bit Impact Factor metric which, we believe, will be helpful for extending AVF evaluation to provide a more accurate vulnerability analysis.
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ISSN:0141-9331
1872-9436
DOI:10.1016/j.micpro.2014.04.009