2005/03/31 by T. Heinemann, Tobias Heinemann, Wolfgang Dobler +5 · 3 citations
Engineering · Environmental Science · Physics and Astronomy · #Atmospheric aerosols and clouds #Optical Polarization and Ellipsometry #Remote Sensing in Agriculture #astro-ph
paper · pdf · doi:10.1051/0004-6361:20053120
published as Astron.Astrophys. 448 (2006) 731-737 · 7 pages, 5 figures, 1 table; substantial improvements; recommended for publication in A&A
arxiv created 2005/11/09 · openalex publication_date 2006/02/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
Aims. An efficient algorithm for calculating radiative transfer on massively parallel computers using domain decomposition is presented. Methods. The integral formulation of the transfer equation is used to divide the problem into a local but compute-intensive part for calculating the intensity and optical depth integrals, and a nonlocal part for communicating the intensity between adjacent processors. Results. The waiting time of idle processors during the nonlocal communication part does not have a severe impact on the scaling. The wall clock time thus scales nearly linearly with the inverse number of processors.