> > Is there then a way to use LinearOperator as Input for a preconditioner? > Else I still have to form the full system matrix (which I would like to > avoid). >
Most precoditioners require access to individual matrx entries. If the class you derive from linear operator provides a suitable interface, you can use it in a preconditioner. Building suitable preconditioners compatible with matrix-free methods is non-trivial. The default choice would be PreconditionChebyshev. Best, Daniel -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/0d388f81-f924-4d58-b0f2-5225dfc81327%40googlegroups.com.
