TCEP: Traffic Consolidation for Energy-Proportional High-Radix Networks

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dc.contributor.authorKim, Gwangsunko
dc.contributor.authorChoi, Hayoungko
dc.contributor.authorKim, Johnko
dc.date.accessioned2018-12-20T02:13:42Z-
dc.date.available2018-12-20T02:13:42Z-
dc.date.created2018-11-29-
dc.date.created2018-11-29-
dc.date.created2018-11-29-
dc.date.issued2018-06-06-
dc.identifier.citation2018 ACM/IEEE 45th Annual International Symposium on Computer Architecture (ISCA), pp.712 - 725-
dc.identifier.issn2575-713X-
dc.identifier.urihttp://hdl.handle.net/10203/247473-
dc.description.abstractHigh-radix topologies in large-scale networks provide low network diameter and high path diversity, but the idle power from high-speed links results in energy inefficiency, especially at low traffic load. In this work, we exploit the high path diversity and non-minimal adaptive routing in high radix topologies to consolidate traffic to a smaller number of links to enable more network channels to be power-gated. In particular, we propose TCEP (Traffic Consolidation for Energy Proportional high-radix networks), a distributed, proactive power management mechanism for large-scale networks that achieves energy-proportionality by proactively power-gating network channels through traffic consolidation. Instead of naively power-gating the least utilized link, TCEP differentiates links with the type of traffic (i.e., minimally vs. non-minimally routed traffic) on them since the performance impact of power-gating on minimal traffic is greater than non-minimal traffic. The performance degradation from the reduced number of channels is minimized by concentrating available links to a small number of routers, instead of distributing them across the network, to maximize path diversity. TCEP introduces a shadow link to quickly reactivate an inactive link and Power Aware progressive Load-balanced (PAL) routing algorithm that incorporates the link power states in load-balancing the network. Our evaluations show that TCEP achieves significantly higher throughput across various traffic patterns while providing comparable energy savings for real workloads, compared to a prior approach proposed for the flattened butterfly topology.-
dc.languageEnglish-
dc.publisherIEEE-
dc.titleTCEP: Traffic Consolidation for Energy-Proportional High-Radix Networks-
dc.typeConference-
dc.identifier.wosid000458810500054-
dc.identifier.scopusid2-s2.0-85055896953-
dc.type.rimsCONF-
dc.citation.beginningpage712-
dc.citation.endingpage725-
dc.citation.publicationname2018 ACM/IEEE 45th Annual International Symposium on Computer Architecture (ISCA)-
dc.identifier.conferencecountryUS-
dc.identifier.conferencelocationInterContinental Los Angeles Downtown-
dc.identifier.doi10.1109/isca.2018.00065-
dc.contributor.localauthorKim, John-
dc.contributor.nonIdAuthorKim, Gwangsun-
dc.contributor.nonIdAuthorChoi, Hayoung-
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