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Parallel Incomplete Factorization of 3D NC FEM Elliptic Systems

  • Yavor Vutov
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4310)

Abstract

A new parallel preconditioner for solution of large scale second order 3D FEM elliptic systems is presented. The problem is discretized by rotated trilinear non-conforming finite elements. The algorithm is based on application of modified incomplete Cholesky factorisation (MIC(0)) to a locally constructed modification B of the original stiffness matrix A. The matrix B preserves the robustness of the point-wise factorisation and has a special block structure allowing parallelization. The performed numerical tests are in agreement with the derived estimates for the parallel times.

Keywords

FEM PCG MIC(0) Parallel Algorithms 

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Copyright information

© Springer Berlin Heidelberg 2007

Authors and Affiliations

  • Yavor Vutov
    • 1
  1. 1.Institute for Parallel Processing, Bulgarian Academy of Sciences 

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