FAS interpolation and smoother components: A comparative study

Miguel Dumett

Lawrence Livermore National Laboratory, P.O. Box 808, L-551, Livermore, CA 94551

Carol Woodward


We study the performance of some FAS components in a multigrid V-cycle for nonlinear anisotropic reaction diffusion equations. We investigate the efficiency of using operator-dependent grid transfer operators and compare the performance of full system and point smoothers. Since interpolation operators and coarse grids are solution dependent, we study the issue of when to refresh both. These studies utilize non-Galerkin coarse equations. Miguel Dumett Center for Applied Scientific Computing Lawrence Livermore National Laboratory P.O. Box 808, L-551 Livermore, CA 94551 (925) 422-8435 (Office)