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dc.contributor.authorSlijepcevic, Mladen
dc.contributor.authorHernandez, Carles
dc.contributor.authorAbella Ferrer, Jaume
dc.contributor.authorCazorla, Francisco J.
dc.contributor.otherBarcelona Supercomputing Center
dc.identifier.citationSlijepcevic, M. [et al.]. Time-Randomized Wormhole NoCs for Critical Applications. "ACM Journal on Emerging Technologies in Computing Systems (JETC) - Special Issue on Emerging Networks-on-Chip and Regular Papers", Febrer 2019, vol. 15, núm. 1.
dc.description.abstractWormhole-based NoCs (wNoCs) are widely accepted in high-performance domains as the most appropriate solution to interconnect an increasing number of cores in the chip. However, wNoCs suitability in the context of critical real-time applications has not been demonstrated yet. In this article, in the context of probabilistic timing analysis (PTA), we propose a PTA-compatible wNoC design that provides tight time-composable contention bounds. The proposed wNoC design builds on PTA ability to reason in probabilistic terms about hardware events impacting execution time (e.g., wNoC contention), discarding those sequences of events occurring with a negligible low probability. This allows our wNoC design to deliver improved guaranteed performance w.r.t. conventional time-deterministic setups. Our results show that performance guarantees of applications running on top of probabilistic wNoC designs improve by 40% and 93% on average for 4 × 4 and 6 × 6 wNoC setups, respectively.
dc.description.sponsorshipThe research leading to these results has received funding from the European Community's Seventh Framework Programme [FP7/2007-2013] under the PROXIMA Project (, grant agreement no 611085. This work has also been partially supported by the Spanish Ministry of Science and Innovation under grant TIN2015-65316-P and the HiPEAC Network of Excellence. Mladen Slijepcevic is funded by the Obra Social Fundación la Caixa under grant Doctorado \la Caixa" - Severo Ochoa. Carles Hernández is jointly funded by the Spanish Ministry of Economy and Competitiveness (MINECO) and FEDER funds through grant TIN2014-60404-JIN. Jaume Abella has been partially supported by the MINECO under Ramon y Cajal postdoctoral fellowship number RYC-2013-14717.
dc.format.extent23 p.
dc.publisherAssociation for Computing Machinery (ACM)
dc.subjectÀrees temàtiques de la UPC::Informàtica
dc.subject.lcshHigh performance computing
dc.subject.otherComputer systems organization
dc.subject.otherReal-time system architecture
dc.subject.otherInterconnection architectures
dc.titleTime-Randomized Wormhole NoCs for Critical Applications
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/FP7/611085/EU/Probabilistic real-time control of mixed-criticality multicore and manycore systems/PROXIMA
upcommons.citation.publicationNameACM Journal on Emerging Technologies in Computing Systems (JETC) - Special Issue on Emerging Networks-on-Chip and Regular Papers

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