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Rescuing healthy cores against disabled routers
KTH, Skolan för informations- och kommunikationsteknik (ICT), Industriell och Medicinsk Elektronik. University of Turku, Finland .
KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektronik och Inbyggda System. University of Turku, Finland .
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2014 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
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.

Ort, förlag, år, upplaga, sidor
2014. s. 98-103
Serie
Proceedings - IEEE International Symposium on Defect and Fault Tolerance in VLSI Systems, ISSN 1550-5774 ; 6962086
Nyckelord [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
Nationell ämneskategori
Elektroteknik och elektronik
Identifikatorer
URN: urn:nbn:se:kth:diva-167603DOI: 10.1109/DFT.2014.6962086Scopus ID: 2-s2.0-84914674609ISBN: 9781479961559 (tryckt)OAI: oai:DiVA.org:kth-167603DiVA, id: diva2:814847
Konferens
27th IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems, DFT 2014, 1 October 2014 - 3 October 2014
Anmärkning

QC 20150528

Tillgänglig från: 2015-05-28 Skapad: 2015-05-22 Senast uppdaterad: 2017-03-28Bibliografiskt granskad

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Av författaren/redaktören
Ebrahimi, MasoumehDaneshtalab, MasoudJantsch, Axel
Av organisationen
Industriell och Medicinsk ElektronikElektronik och Inbyggda SystemElektroniksystem
Elektroteknik och elektronik

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