Parallel implementation of the phoenix generalized stellar atmosphere program. III. A parallel algorithm for direct opacity sampling

Peter H. Hauschildt, David K Lowenthal, E. Baron

Research output: Contribution to journalArticle

15 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)323-329
Number of pages7
JournalAstrophysical Journal, Supplement Series
Volume134
Issue number2
DOIs
StatePublished - Jun 2001
Externally publishedYes

Fingerprint

Phoenix (AZ)
stellar atmospheres
opacity
files
sampling
atmosphere
parallel computing
supercomputers
workstations
farm
programme

Keywords

  • Radiative transfer
  • Stars: atmospheres

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Parallel implementation of the phoenix generalized stellar atmosphere program. III. A parallel algorithm for direct opacity sampling. / Hauschildt, Peter H.; Lowenthal, David K; Baron, E.

In: Astrophysical Journal, Supplement Series, Vol. 134, No. 2, 06.2001, p. 323-329.

Research output: Contribution to journalArticle

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