Parallel Implementation of the PHOENIX Generalized Stellar Atmosphere Program. III: A parallel algorithm for direct opacity sampling
Astrophysics
2009-11-06 v1
Abstract
We describe two parallel algorithms for line opacity calculations based on a local file and on a global file approach. The performance and scalability of both approaches is discussed for different test cases and very different parallel computing systems. The results show that a global file approach is more efficient on high-performance parallel supercomputers with dedicated parallel I/O subsystem whereas the local file approach is very useful on farms of workstations, e.g., cheap PC clusters.
Keywords
Cite
@article{arxiv.astro-ph/0104258,
title = {Parallel Implementation of the PHOENIX Generalized Stellar Atmosphere Program. III: A parallel algorithm for direct opacity sampling},
author = {Peter H. Hauschildt and David K. Lowenthal and E. Baron},
journal= {arXiv preprint arXiv:astro-ph/0104258},
year = {2009}
}
Comments
19 pages, ApJ Suppl in press (July 2001), 6 figures. Also available at http://phoenix.physast.uga.edu/