{"title":"A methodology to compute long-term fault resilience of NoCs under fault-tolerant routing algorithms","authors":"Jie Hou, M. Radetzki","doi":"10.1109/FDL.2019.8876904","DOIUrl":null,"url":null,"abstract":"Networks-on-Chips (NoCs) are the preferred communication interconnect for many-core systems. Technology scaling increases the susceptibility to failures in the NoC’s components. Fault-tolerant routing algorithms are applied to maintain reliable operation in the presence of such failures. Fault resilience is a measure of a NoC’s ability to tolerate faults. In this paper, we investigate how fault resilience develops over a long period of time during which faults appear and disappear. We apply Markov reward models to investigate long-term fault-resilience of mesh-based NoCs under three different routing algorithms. Fault-tolerant XY routing brings the best long-term fault resilience even though it is less adaptive than fault-tolerant negative-first routing. We further investigate how long-term fault resilience develops with scaling towards larger NoCs.","PeriodicalId":162747,"journal":{"name":"2019 Forum for Specification and Design Languages (FDL)","volume":"418 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 Forum for Specification and Design Languages (FDL)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/FDL.2019.8876904","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Networks-on-Chips (NoCs) are the preferred communication interconnect for many-core systems. Technology scaling increases the susceptibility to failures in the NoC’s components. Fault-tolerant routing algorithms are applied to maintain reliable operation in the presence of such failures. Fault resilience is a measure of a NoC’s ability to tolerate faults. In this paper, we investigate how fault resilience develops over a long period of time during which faults appear and disappear. We apply Markov reward models to investigate long-term fault-resilience of mesh-based NoCs under three different routing algorithms. Fault-tolerant XY routing brings the best long-term fault resilience even though it is less adaptive than fault-tolerant negative-first routing. We further investigate how long-term fault resilience develops with scaling towards larger NoCs.