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Improving yield of torus nocs through fault-diagnosis-and-repair of interconnect faults

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6 Author(s)
Concatto, C. ; Inst. de Inf., Univ. Fed. do Rio Grande do Sul, Porto Alegre, Brazil ; Almeida, P. ; Kastensmidt, F. ; Cota, E.
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We propose a fault tolerance method for torus NoCs capable of increase the yield with minimal performance overhead. The proposed approach consists in detecting and diagnosing interconnect faults using BIST structures and activating alternative paths for the faulty links. Experimental results show that alternative fault-free paths are found by the dynamic routing for 95% of the diagnosed faults (stuck-at and pairwise shorts within a single link or between any two links).

Published in:

On-Line Testing Symposium, 2009. IOLTS 2009. 15th IEEE International

Date of Conference:

24-26 June 2009