[petsc-users] SNES and ghosted vector of unknowns

[Jed Brown]

On Fri, Apr 20, 2012 at 06:53, Dominik Szczerba <dominik at itis.ethz.ch>wrote:

> I am using SNES to solve a simple nonlinear system.
> My vector of unknowns (x) is ghosted, and before (i.e. with my own
> home brewed nonlinear solver) I had to always update the ghosted
> values after a linear solve with ksp. How can I now force the update,
> if I am not calling ksp myself?
>

You should do the update in your residual evaluation routine.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120420/ad7d419b/attachment.htm>