Hello, I have difficulty understanding how PCKSP works.
From: http://www.mcs.anl.gov/petsc/documentation/tutorials/Columbia04/DDandMultigrid.pdf I understand that instead of using preconditioners, it uses Krylov methods for the ''inner solvers''. What are the ''inner solvers''? Is there some kind of a subsystem that is solved instead of applying a preconditioner? Many thanks, Margarita -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120619/aaab0dad/attachment-0001.html>
