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Energy-efficient redundant execution for chip multiprocessors

Subramanyan, Pramod and Singh, Virendra and Saluja, Kewal K and Larsson, Erik (2010) Energy-efficient redundant execution for chip multiprocessors. In: Proceedings of the 20th symposium on Great lakes symposium on VLSI (GLSVLSI '10), May 16-18, 2010, Brown University Campus, Providence, Rhode Island, USA.

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Official URL: http://dl.acm.org/citation.cfm?id=1785516&preflayo...

Abstract

Relentless CMOS scaling coupled with lower design tolerances is making ICs increasingly susceptible to wear-out related permanent faults and transient faults, necessitating on-chip fault tolerance in future chip microprocessors (CMPs). In this paper, we describe a power-efficient architecture for redundant execution on chip multiprocessors (CMPs) which when coupled with our per-core dynamic voltage and frequency scaling (DVFS) algorithm significantly reduces the energy overhead of redundant execution without sacrificing performance. Our evaluation shows that this architecture has a performance overhead of only 0.3% and consumes only 1.48 times the energy of a non-fault-tolerant baseline.

Item Type: Conference Proceedings
Additional Information: Copyright belongs toACM New York, NY, USA
Department/Centre: Division of Information Sciences > Supercomputer Education & Research Centre
Date Deposited: 14 Dec 2011 12:32
Last Modified: 14 Dec 2011 12:32
URI: http://eprints.iisc.ernet.in/id/eprint/42738

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