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dc.contributor.authorUtrera Iglesias, Gladys Miriam
dc.contributor.authorGil, Marisa
dc.contributor.authorMartorell Bofill, Xavier
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors
dc.date.accessioned2018-02-15T10:05:44Z
dc.date.available2018-12-20T01:30:42Z
dc.date.issued2017-12-21
dc.identifier.citationUtrera, G., Gil, M., Martorell, X. Analyzing the impact of communication imbalance in high-speed networks. "Concurrency and computation. Practice and experience", 10 Abril 2018, vol. 30, núm. 7, p. 1-15.
dc.identifier.issn1532-0626
dc.identifier.urihttp://hdl.handle.net/2117/114138
dc.description.abstractIn this work we analyze the communication load imbalance generated by irregular-data applications running in a multi-node cluster. Experimental approaches to diminish communication load imbalance are evaluated using a hybrid programming model MPI+OpenMP including certain optimizations like computation-communication overlap, issuing communications in parallel and a new proposal based on message fragmentation in order to take advantage of the eager-protocol. Performance results show that overlapped versions can obtain a great benefit of this optimization because it avoids switching to rendez-vous protocols. However, non-overlapped versions showed better performance than overlapped ones. To evaluate also the impact due to network latency, the work has been tested on two high-speed interconnection networks: Infiniband and 10Gigabit Ethernet. In this case, the optimizations in the non-overlapped miniFE benchmark reached and improvement up to 7% on Infiniband and 11% on 10Gigabit.
dc.format.extent15 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Informàtica::Arquitectura de computadors
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors::Trànsit de dades
dc.subject.lcshComputer networks -- Design and construction
dc.subject.lcshComputer networks -- Scalability
dc.subject.lcshTelecommunication -- Traffic -- Management
dc.subject.otherHigh performance interconnection networks
dc.subject.otherLoad balancing
dc.subject.otherMessage size
dc.subject.otherMPI library
dc.subject.otherScalable computing
dc.titleAnalyzing the impact of communication imbalance in high-speed networks
dc.typeArticle
dc.subject.lemacOrdinadors, Xarxes d' -- Disseny i construcció
dc.subject.lemacTelecomunicació -- Tràfic -- Gestió
dc.contributor.groupUniversitat Politècnica de Catalunya. CAP - Grup de Computació d'Altes Prestacions
dc.identifier.doi10.1002/cpe.4394
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://doi.org/10.1002%2Fcpe.4394
dc.rights.accessOpen Access
local.identifier.drac21886284
dc.description.versionPostprint (author's final draft)
dc.relation.projectidinfo:eu-repo/grantAgreement/Projecte R+D+I competitiu/CICYT
dc.relation.projectidinfo:eu-repo/grantAgreement/MINECO/1PE/TIN2015-65316-P
local.citation.authorUtrera, G.; Gil, M.; Martorell, X.
local.citation.publicationNameConcurrency and computation. Practice and experience
local.citation.volume30
local.citation.number7
local.citation.startingPage1
local.citation.endingPage15


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