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| Paper: |
Application of GPUs for the Calculation of Two Point Correlation Functions in Cosmology |
| Volume: |
461, Astronomical Data Analysis Software and Systems XXI |
| Page: |
73 |
| Authors: |
Ponce, R.; Cárdenas-Montes, M.; Rodríguez-Vázquez, J. J.; Sánchez, E.; Sevilla, I. |
| Abstract: |
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. |
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