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 Scopus citations


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
Issue number2
Publication statusPublished - Jun 2001
Externally publishedYes



  • Radiative transfer
  • Stars: atmospheres

ASJC Scopus subject areas

  • Space and Planetary Science

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