The implementation of BLAS for band matrices

Authors:
Alfredo Remón;Enrique S. Quintana-Ortí;Gregorio Quintana-Ortí
Affiliations:
Depto. de Ingeniería y Ciencia de Computadores, Universidad Jaime I, Castellón, Spain;Depto. de Ingeniería y Ciencia de Computadores, Universidad Jaime I, Castellón, Spain;Depto. de Ingeniería y Ciencia de Computadores, Universidad Jaime I, Castellón, Spain
Venue:
PPAM'07 Proceedings of the 7th international conference on Parallel processing and applied mathematics
Year:
2007

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Abstract

In this paper we evaluate the performance of several implementations of the routines in BLAS involving band matrices. The results on two different platforms show that not enough attention has been paid to the efficient implementation of these operations. We also present implementations for two level 3 BLAS-like operations that are not included in the current specification of BLAS: the product of a band matrix times a general matrix and the product of two band matrices.