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dc.contributor.authorGiménez Lucas, Judit
dc.contributor.authorMercadal, Estanislao
dc.contributor.authorLlort, German
dc.contributor.authorMéndez, Sandra
dc.contributor.otherBarcelona Supercomputing Center
dc.identifier.citationGimenez, J. [et al.]. Analyzing the efficiency of hybrid codes. A: International Symposium on Parallel and Distributed Computing. "2020 19th International Symposium on Parallel and Distributed Computing, ISPDC 2020: Warsaw, Poland, 5-8 July 2020: proceedings". Institute of Electrical and Electronics Engineers (IEEE), 2020, p. 29-36. ISBN 978-1-7281-8946-8. DOI 10.1109/ISPDC51135.2020.00014.
dc.description.abstractHybrid parallelization may be the only path for most codes to use HPC systems on a very large scale. Even within a small scale, with an increasing number of cores per node, combining MPI with some shared memory thread-based library allows to reduce the application network requirements. Despite the benefits of a hybrid approach, it is not easy to achieve an efficient hybrid execution. This is not only because of the added complexity of combining two different programming models, but also because in many cases the code was initially designed with just one level of parallelization and later extended to a hybrid mode. This paper presents our model to diagnose the efficiency of hybrid applications, distinguishing the contribution of each parallel programming paradigm. The flexibility of the proposed methodology allows us to use it for different paradigms and scenarios, like comparing the MPI+OpenMP and MPI+CUDA versions of the same code.
dc.description.sponsorshipThis work has been partially developed under the scope of POP CoE which has received funding from the European Union´s Horizon 2020 research and innovation programme (under grant agreements No. 676553 and 824080), and with the support of the Comision Interministerial de Ciencia y Tecnología (CICYT) under contract No. PID2019- 107255GB-C22. We also want to acknowledge the ChEESE CoE and the EDANYA group from Universidad de Málaga ( that granted us permission to report on the Tsunami-HySEA analysis.
dc.format.extent8 p.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectÀrees temàtiques de la UPC::Informàtica::Arquitectura de computadors
dc.subject.lcshParallel programming (Computer science)
dc.subject.lcshHigh performance computing
dc.subject.otherEfficiency model
dc.subject.otherHybrid parallelization
dc.subject.otherScala-bility efficiency
dc.subject.otherPerformance analysis
dc.titleAnalyzing the efficiency of hybrid codes
dc.typeConference report
dc.subject.lemacProgramació en paral·lel (Informàtica)
dc.subject.lemacCàlcul intensiu (Informàtica)
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/676553/EU/Performance Optimisation and Productivity/POP
dc.relation.projectidnfo:eu-repo/grantAgreement/EC/H2020/824080/EU/Performance Optimisation and Productivity 2/POP2
local.citation.authorGiménez, J.; Mercadal, E.; Llort, G.; Méndez, S.
local.citation.contributorInternational Symposium on Parallel and Distributed Computing
local.citation.publicationName2020 19th International Symposium on Parallel and Distributed Computing, ISPDC 2020: Warsaw, Poland, 5-8 July 2020: proceedings

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