Fortran legacy code performance optimization

Título:

Fortran legacy code performance optimization :  sequential and parallel processing with OpenMP

Autor:

Tinetti, Fernando Gustavo

Colaboradores:

; López, Mónica A.; Cajaraville, Pedro G.; Rodrigues, Diego L.

Temas:

En:

World Congress on Computer Science and Information Engineering (2009)

Resumen:

Several optimization alternatives are presented for legacy Fortran 77 scientific programs, each one with a quantitative characterization in terms of performance gain. Initially, sequential optimization is focused on the analisys of Level 3 BLAS (Basic Linear Algebra Subroutines) utiliza- tion, since BLAS have several performance optimized implementations. Also, the Fortran 90/95 array notation is used as a code upgrade from Fortran 77 to Fortran 90/95 and, also, to provide the compiler a better source code for performance optimization. Since the shared memory parallel computing model is widely available (multiple cores and/or processors), the analysis of possible parallel processing via OpenMP is presented, along with the performance gain in a specific case. Sequential optimization as well parallelization work is done on a real (production code) program: a weather climate model implemented about two decades ago and used for climate research.

URL/DOI:

http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5171383

Medio:

Soporte electrónico

Tipo de documento:

Artículo

Descripción física:

1 archivo (223,7 kB)

Idioma:

Inglés

Publicación:

, 2009

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