Towards Production Code Effective Portability among Vector Machines and Microprocessor-Based Architectures

Author

Fazenda, Alvaro Luiz ; Enari, Eduardo Hidenori ; Rodrigues, Luiz Flavio ; Panetta, Jairo

Author_Institution

Centra de Previsao de Tempo e Estudos Climaticos, Instituto Nacional de Pesquisas Espaciais

fYear

2006

fDate

Oct. 2006

Firstpage

11

Lastpage

20

Abstract

Effective portability of production codes is a goal that has been pursued over decades with modest success. This paper presents a technique that enhances efficiency of a single code fragment (advection) of a production weather forecast code on both a vector machine and an IA-32-based machine. The technique combines vector instructions with cache reuse and small memory footprint, using vector length as the single performance parameter. Performance results compare favorably with current performance levels for production weather forecast codes

Keywords

cache storage; computer architecture; geophysics computing; software portability; weather forecasting; IA-32-based machine; advection; cache reuse; memory footprint; microprocessor-based architectures; production code effective portability; production weather forecast code; single performance parameter; vector instructions; vector length; vector machines; Atmospheric modeling; Degradation; Fast Fourier transforms; High performance computing; Linear algebra; National electric code; Production; Search engines; Vectors; Weather forecasting;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Architecture and High Performance Computing, 2006. SBAC-PAD '06. 18TH International Symposium on

Conference_Location

Ouro Preto

ISSN

1550-6533

Print_ISBN

0-7695-2704-3

Type

conf

DOI

10.1109/SBAC-PAD.2006.29

Filename

4032411