On Thu, Apr 5, 2012 at 11:12, Abdul Hanan Sheikh <hanangul12 at yahoo.co.uk>wrote:
> Recursive two level multigrid (by using PCMG with my desired stuff in it, > in PCSHELL) is okay. I will do it recursively. > No Problem with recursion and nested iterations. > Coming to two level, > How can I get exactly Prec = C + M^-1 (I - A*C) in a two level multigrid > ? > What should be specific choice of pre_smoother_ksp_context and > post_smoother_ksp_context > to get the "Prec" ? > what operators should be chosen in these two ksp contexts ? > This is just -pc_mg_type kaskade (zero pre-smoothing iterations, one post-smoothing iteration). -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120405/65a58f43/attachment.htm>
