[petsc-users] Ghost communication

[Jed Brown]

On Wed, Jun 22, 2011 at 16:45, Milan Mitrovic <milan.v.mitrovic at gmail.com>wrote:

> Both vectors are created with the VecCreateGhostWithArray as pasted above.
>
> The ghosts never get updated... I put a dummy value and it stays untouched.
>

Please paste the code you used to conclude this and what you expected to
see.


>
> 'to' is also a ghosted vector but the contributions from the ghosts
> should be discarded. The ghosts are only used to compute the new local
> values.
>

Then why were you using this?

         CALL VecGhostUpdateBegin(to,ADD_VALUES,SCATTER_REVERSE,info)
         CALL VecGhostUpdateEnd(to,ADD_VALUES,SCATTER_REVERSE,info)

What did you expect that to do?
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