[petsc-users] Ghost communication

Matthew Knepley knepley at gmail.com
Wed Jun 22 09:52:21 CDT 2011

On Wed, Jun 22, 2011 at 9:45 AM, 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.
> '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.
> Any ideas?

Can you run Vec ex9? It demonstrates the use of ghosted vectors.


What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
-- Norbert Wiener
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