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Line-by-line Spectroscopic Simulations on Graphics Processing Units by Sylvain Collange; Marc Daumas; David Defour is a Physics and Astronomy article available to read on EtoBox.

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We report here on software that performs line-by-line spectroscopic simulations on gases. Elaborate models (such as narrow band and correlated-K) are accurate and efficient for bands where various components are not simultaneously and significantly active. Line-by-line is probably the most accurate model in the infrared for blends of gases that contain high proportions of H 2 O and CO 2 as this was the case for our prototype simulation. Our implementation on graphics processing units sustains a speedup close to 330 on computation-intensive tasks and 12 on memory intensive tasks compared to implementations on one core of high-end processors. This speedup is due to data parallelism, efficient memory access for specific patterns and some dedicated hardware operators only available in graphics processing units. It is obtained leaving most of processor resources available and it would scale linearly with the number of graphics processing units in parallel machines. Line-by-line simulation coupled with simulation of fluid dynamics was long believed to be economically intractable but our work shows that it could be done with some affordable additional resources compared to what is necessa

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Author

Sylvain Collange; Marc Daumas; David Defour

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0010-4655)

Published

2008

Language

EN

Field

Physics and Astronomy (Physical Sciences)