Show simple item record

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.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.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.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.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.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
dc.relation.projectidinfo:eu-repo/grantAgreement/Projecte R+D+I competitiu/CICYT
local.citation.authorUtrera, G.; Gil, M.; Martorell, X.
local.citation.publicationNameConcurrency and computation. Practice and experience

Files in this item


This item appears in the following Collection(s)

Show simple item record

All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder