Increasing data locality and introducing Level-3 BLAS in the Neville elimination
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Scholar |
Otros documentos de la autoría: Alonso-Jordá, Pedro; Cortina Parajón, Raquel; Quintana-Orti, Enrique S.; Ranilla Pastor, José
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http://dx.doi.org/10.1016/j.amc.2011.08.076 |
Metadatos
Título
Increasing data locality and introducing Level-3 BLAS in the Neville eliminationAutoría
Fecha de publicación
2011-12-01Editor
ElsevierISSN
0096-3003; 1873-5649Cita bibliográfica
Applied Mathematics and Computation (1 Dec. 2011), vol. 218, no. 7, 3348-3358Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0096300311011179Palabras clave / Materias
Resumen
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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