# KSPPREONLY

This implements a stub method that applies ONLY the preconditioner. This may be used in inner iterations, where it is desired to allow multiple iterations as well as the "0-iteration" case. It is commonly used with the direct solver preconditioners like PCLU and PCCHOLESKY

### Options Database Keys

see KSPSolve() -

### See Also

KSPCreate(), KSPSetType(), KSPType (for list of available types), KSP

Level:beginner
Location:src/ksp/ksp/impls/preonly/preonly.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages

### Examples

src/snes/examples/tutorials/ex33f.F.html