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Rescuing healthy cores against disabled routers
KTH, School of Information and Communication Technology (ICT), Industrial and Medical Electronics. University of Turku, Finland .
KTH, School of Information and Communication Technology (ICT), Electronics and Embedded Systems. University of Turku, Finland .
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2014 (English)Conference paper, Published paper (Refereed)
Abstract [en]

A router may be temporarily or permanently disabled in NoCs for several reasons such as saving power, occurring faults or testing. Disabling a router, however, may have a severe impact on the performance or functionality of the entire system if it results in disconnecting the core from the network. In this paper, we propose a deadlock-free routing algorithm which allows the core to stay connected to the system and continue its normal operation when its connected router is disabled. Our analysis and experiments show that the proposed technique has 100%, 93.60%, and 87.19% network availability by 100% packet delivery when 1, 2 and 3 routers are defunct or intentionally disabled. The algorithm provides adaptivity and it is lightweight, requiring one and two virtual channels along the X and Y dimension, respectively.

Place, publisher, year, edition, pages
2014. 98-103 p.
Series
Proceedings - IEEE International Symposium on Defect and Fault Tolerance in VLSI Systems, ISSN 1550-5774 ; 6962086
Keyword [en]
Fault tolerance, Networks-on-Chip, Router Test, Design for testability, Microprocessor chips, Network-on-chip, Adaptivity, Deadlock-free routing algorithms, Entire system, Network availability, Networks on chips, Normal operations, Packet Delivery, Virtual channels, Routers
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-167603DOI: 10.1109/DFT.2014.6962086Scopus ID: 2-s2.0-84914674609ISBN: 9781479961559 (print)OAI: oai:DiVA.org:kth-167603DiVA: diva2:814847
Conference
27th IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems, DFT 2014, 1 October 2014 - 3 October 2014
Note

QC 20150528

Available from: 2015-05-28 Created: 2015-05-22 Last updated: 2017-03-28Bibliographically approved

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Ebrahimi, MasoumehDaneshtalab, MasoudJantsch, Axel
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
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Language
  • de-DE
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Output format
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