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Time and energy modeling of a high-performance multi-threaded Cholesky factorization
dc.contributor.author | Catalán, Sandra | |
dc.contributor.author | Igual, Francisco D. | |
dc.contributor.author | Mayo, Rafael | |
dc.contributor.author | Rodríguez Sánchez, Rafael | |
dc.contributor.author | Quintana-Orti, Enrique S. | |
dc.date.accessioned | 2016-11-25T08:36:32Z | |
dc.date.available | 2016-11-25T08:36:32Z | |
dc.date.issued | 2016-02-05 | |
dc.identifier.citation | CATALÁN 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. 1-13 | ca_CA |
dc.identifier.uri | http://hdl.handle.net/10234/164690 | |
dc.description.abstract | We 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.sponsorShip | This 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.extent | 16 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Springer | ca_CA |
dc.relation.isPartOf | Journal of supercomputing (2016), online | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/CNE/1.0/ | * |
dc.subject | Modeling | ca_CA |
dc.subject | Performance | ca_CA |
dc.subject | Energy consumption | ca_CA |
dc.subject | Linear algebra | ca_CA |
dc.subject | Multi-threading | ca_CA |
dc.title | Time and energy modeling of a high-performance multi-threaded Cholesky factorization | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1007/s11227-016-1654-6 | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://link.springer.com/article/10.1007/s11227-016-1654-6 | ca_CA |
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