[petsc-users] SNES and ghosted vector of unknowns

[Jed Brown]

On Fri, Apr 20, 2012 at 07:08, Matthew Knepley <knepley at gmail.com> wrote:

> You can use
>
>
> http://www.mcs.anl.gov/petsc/petsc-dev/docs/manualpages/SNES/SNESSetUpdate.html
>

Please don't do it this way, line searches and other methods will not work.
A ghosted vector is defined by the global entries, not the local form.
Update the local form when you want it to be current.
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