[petsc-users] Custom line search for predictor-corrector

[Jed Brown]

Harshad Sahasrabudhe <hsahasra at purdue.edu> writes:

> Hi,
>
> I want to implement a Predictor-Corrector algorithm for solving a coupled
> Schrödinger-Poisson system using SNES. I can calculate the next step using
> my predictor algorithm and don't want PETSc to calculate the next step. I
> only need PETSc to check for convergence. What is the best way to implement
> this?

Probably SNESLineSearchRegister your implementation.  The Newton solve
gives a correction and you can follow it with anything you want.
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