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dc.contributor.authorCatalán, Sandra
dc.contributor.authorIgual, Francisco D.
dc.contributor.authorMayo, Rafael
dc.contributor.authorRodríguez Sánchez, Rafael
dc.contributor.authorQuintana-Orti, Enrique S.
dc.date.accessioned2016-11-25T08:36:32Z
dc.date.available2016-11-25T08:36:32Z
dc.date.issued2016-02-05
dc.identifier.citationCATALÁN PALLARÉS, Sandra; IGUAL PEÑA, Francisco Daniel; MAYO, Rafael; RODRÍGUEZ SÁNCHEZ, Rafael; QUINTANA ORTÍ, Enrique S. Time and energy modeling of a high-performance multi-threaded Cholesky factorization. Journal of supercomputing (2016), online, pp. 1-13ca_CA
dc.identifier.urihttp://hdl.handle.net/10234/164690
dc.description.abstractWe present accurate time and energy piece-wise models of high-performance multi-threaded implementations for the general matrix multiplication, triangular system solve with multiple right-hand sides, and symmetric rank-k update. Furthermore, these are then assembled to provide accurate models of the Cholesky factorization built on top of these Level-3 BLAS operations. Our models consider the costs, in terms of time and energy, of the floating-point operations involved in the routines as well as the overhead due to data movements across the levels of the memory hierarchy. The accuracy of the multi-threaded models is tested on an Intel Xeon E5-2620 processor, reporting relative errors for the Cholesky factorization that are, respectively, around 2.4 and 2.9 % on average for time and energy.ca_CA
dc.description.sponsorShipThis work was supported by the CICYT projects TIN2014-53495-R and CICYT-TIN 2012-32180 of the MINECO and FEDER, the EU FET Project FP7 318793 “EXA2GREEN”, and the FPU program of MECD.ca_CA
dc.format.extent16 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherSpringerca_CA
dc.relation.isPartOfJournal of supercomputing (2016), onlineca_CA
dc.rights.urihttp://rightsstatements.org/vocab/CNE/1.0/*
dc.subjectModelingca_CA
dc.subjectPerformanceca_CA
dc.subjectEnergy consumptionca_CA
dc.subjectLinear algebraca_CA
dc.subjectMulti-threadingca_CA
dc.titleTime and energy modeling of a high-performance multi-threaded Cholesky factorizationca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttp://dx.doi.org/10.1007/s11227-016-1654-6
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_CA
dc.relation.publisherVersionhttp://link.springer.com/article/10.1007/s11227-016-1654-6ca_CA


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