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Talk Abstract
Parallel Solution of Radiative Transport Problems in Astrophysics

Guido Kanschat, University of Heidelberg

Simulation of multidimensional radiative transfer problems is of high complexity. The domain of computation is 5-dimensional, making a combination of adaptive algorithms and parallel computation necessary for the solution. A method of distributing the ordinate space is presented. Linear systems are solved by Krylov-space methods combined with multi-level techniques. We avoid typical problems of parallel preconditioning of transport problems by a purely local preconditioner. A time complexity analysis will be presented, as well as two- and three-dimensional results.

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1996-1997 Mathematics in High Performance Computing