[petsc-users] How to set newton iteration as LU factor once and use LU result as PC

[Gong Ding]

Hi,
I'd like to try following strategy:
For a nonlinear solver, at the first Newton step, do a complete LU factorization, and use the factorized matrix as preconditioner matrix in the following iteration.

How to implement this in petsc?

Gong Ding