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dc.contributor.authorGorobets, Andrei
dc.contributor.authorTrias Miquel, Francesc Xavier
dc.contributor.authorBorrell Pol, Ricard
dc.contributor.authorSoria Guerrero, Manel
dc.contributor.authorOliva Llena, Asensio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
dc.identifier.citationGorobets, A. [et al.]. Hybrid MPI+OpenMP parallelization of a Navier-Stokes solver for large-scale DNS. A: International Conference on Computational Heat and Mass Transfer. "ICCHMT 2011 : 7th International Conference on Computational Heat and Mass Transfer". Istanbul: 2011, p. 1-5.
dc.description.abstractThis work presents a parallel Navier-Stokes solver for the large-scale direct numerical simulation (DNS) of incompressible flows with one periodic direction. It is based on a scalable Poisson solver that combines an FFT diagonalization with a preconditioned conjugate gradient (PCG) method and a direct Schurcomplement based method. Modern architectures of supercomputers with multi-core nodes motivate the use of a two-level hybrid MPI+OpenMP parallelization. The use of the more complex two-level approach has allowed to significantly extend the number of CPUs the solver can efficiently use. Here, the solver has been successfully tested on up to 12800 CPU cores for meshes with up to 109 grid points. However, estimations based on presented results show that more than 50000 CPU cores can potentially be exploited.
dc.format.extent5 p.
dc.subjectÀrees temàtiques de la UPC::Informàtica::Aplicacions de la informàtica::Aplicacions informàtiques a la física i l‘enginyeria
dc.subjectÀrees temàtiques de la UPC::Física::Termodinàmica::Física de la transmissió de la calor
dc.subject.lcshDirect numerical simulation
dc.subject.lcshNavier–Stokes equations
dc.titleHybrid MPI+OpenMP parallelization of a Navier-Stokes solver for large-scale DNS
dc.typeConference lecture
dc.subject.lemacSimulació, Mètodes de -- Models matemàtics
dc.subject.lemacEquacions de Navier-Stokes
dc.contributor.groupUniversitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
upcommons.citation.authorGorobets, A.; Trias, F. X.; Borrell, R.; Soria, M.; Oliva, A.
upcommons.citation.contributorInternational Conference on Computational Heat and Mass Transfer
upcommons.citation.publicationNameICCHMT 2011 : 7th International Conference on Computational Heat and Mass Transfer

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