Parallel Eigensolvers for a Discretized Radiative Transfer Problem

  • Authors:
  • Paulo B. Vasconcelos;Osni Marques;Jose E. Roman

  • Affiliations:
  • Faculdade de Economia da Universidade do Porto, Porto, Portugal 4200-464;Lawrence Berkeley National Laboratory, Berkeley, USA CA 94720-8139;Instituto ITACA, Universidad Politécnica de Valencia, Valencia, Spain 46022

  • Venue:
  • High Performance Computing for Computational Science - VECPAR 2008
  • Year:
  • 2008

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Abstract

In this work we consider the numerical computation of eigenpairs of a matrix derived from integral operators. The matrix is associated to a radiative transfer problem in stellar atmospheres that is formulated by means of a weakly singular Fredholm integral equation defined on a Banach space. We examine direct and iterative parallel strategies for the eigensolution phase, using state-of-the-art numerical methods implemented in publicly available software packages.