Application of GPUs for the Calculation of Two Point Correlation Functions in Cosmology

Дата и время публикации : 2012-04-30T13:42:08Z

Авторы публикации и институты :
Rafael Ponce
Miguel Cardenas-Montes
Juan Jose Rodriguez-Vazquez
Eusebio Sanchez
Ignacio Sevilla

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: To appear in the ADASS XXI (Paris, 2011) conference proceedings. Code available at http://wwwae.ciemat.es/cosmo/gp2pcf/
Первичная категория: astro-ph.IM

Все категории : astro-ph.IM, astro-ph.CO, physics.comp-ph

Краткий обзор статьи: In this work, we have explored the advantages and drawbacks of using GPUs instead of CPUs in the calculation of a standard 2-point correlation function algorithm, which is useful for the analysis of Large Scale Structure of galaxies. Taking into account the huge volume of data foreseen in upcoming surveys, our main goal has been to accelerate significantly the analysis codes. We find that GPUs offer a 100-fold increase in speed with respect to a single CPU without a significant deviation in the results. For comparison’s sake, an MPI version was developed as well. Some issues, like code implementation, which arise from using this option are discussed.

Category: Physics