Increasing data locality and introducing Level-3 BLAS in the Neville elimination
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Altres documents de l'autoria: Alonso-Jordá, Pedro; Cortina Parajón, Raquel; Quintana-Orti, Enrique S.; Ranilla Pastor, José
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Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
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http://dx.doi.org/10.1016/j.amc.2011.08.076 |
Metadades
Títol
Increasing data locality and introducing Level-3 BLAS in the Neville eliminationAutoria
Data de publicació
2011-12-01Editor
ElsevierISSN
0096-3003; 1873-5649Cita bibliogràfica
Applied Mathematics and Computation (1 Dec. 2011), vol. 218, no. 7, 3348-3358Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.sciencedirect.com/science/article/pii/S0096300311011179Paraules clau / Matèries
Resum
In this paper we present two new algorithmic variants to compute the Neville elimination, with and without pivoting, which improve data locality and cast most of the computations in terms of high-performance Level 3 ... [+]
In this paper we present two new algorithmic variants to compute the Neville elimination, with and without pivoting, which improve data locality and cast most of the computations in terms of high-performance Level 3 BLAS. The experimental evaluation on a state-of-the-art multi-core processor demonstrates that the new blocked algorithms exhibit a much higher degree of concurrency and better cache usage, yielding higher performance while offering numerical accuracy akin to that of the traditional columnwise variant in most cases [-]
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© 2011 Elsevier Inc. All rights reserved
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