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Dodging Non-Uniform I/O Access in Hierarchical Collective Operations for Multicore Clusters

hal.structure.identifierLaboratoire Bordelais de Recherche en Informatique [LaBRI]
hal.structure.identifierEfficient runtime systems for parallel architectures [RUNTIME]
dc.contributor.authorGOGLIN, Brice
hal.structure.identifierLaboratoire Bordelais de Recherche en Informatique [LaBRI]
hal.structure.identifierEfficient runtime systems for parallel architectures [RUNTIME]
dc.contributor.authorMOREAUD, Stéphanie
dc.contributor.editorIEEE
dc.date.accessioned2024-04-15T09:47:47Z
dc.date.available2024-04-15T09:47:47Z
dc.date.issued2011-05-16
dc.date.conference2011-05-16
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/198126
dc.description.abstractEnThe increasing number of cores led to scalability issues in modern servers that were addressed by using non-uniform memory interconnects such as HyperTransport and QPI. These technologies reintroduced Non-Uniform Memory Access (NUMA) architectures. They are also responsible for Non-Uniform Input/Output Access (NUIOA), as I/O devices may be directly connected to a single processor, thus getting faster access to some cores and memory banks than to the others. In this paper, we propose to adapt MPI collective operations to NUIOA constraints. These operations are now often based on the combination of multiple strategies depending on the underlying cluster topology, with local leader processes being used as intermediate. Our strategy focuses on electing these leaders according to the locality of processes and network interfaces so as to give them privileged network access. We validate our approach on a hierarchical Broadcast operation which brings up to 25% throughput improvement between 64 processes.
dc.language.isoen
dc.title.enDodging Non-Uniform I/O Access in Hierarchical Collective Operations for Multicore Clusters
dc.typeCommunication dans un congrès
dc.identifier.doi10.1109/IPDPS.2011.222
dc.subject.halInformatique [cs]/Système d'exploitation [cs.OS]
bordeaux.page7p
bordeaux.hal.laboratoriesLaboratoire Bordelais de Recherche en Informatique (LaBRI) - UMR 5800*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.conference.titleCASS 2011: The 1st Workshop on Communication Architecture for Scalable Systems, held in conjunction with IPDPS 2011
bordeaux.countryUS
bordeaux.conference.cityAnchorage
bordeaux.peerReviewedoui
hal.identifierinria-00566246
hal.version1
hal.invitednon
hal.proceedingsoui
hal.conference.end2011-05-20
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//inria-00566246v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2011-05-16&rft.spage=7p&rft.epage=7p&rft.au=GOGLIN,%20Brice&MOREAUD,%20St%C3%A9phanie&rft.genre=unknown


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