[petsc-dev] -dmmg_form_function_ghost

Matthew Knepley knepley at gmail.com
Wed Mar 24 17:13:19 CDT 2010

On Wed, Mar 24, 2010 at 5:11 PM, Jed Brown <jed at 59a2.org> wrote:

> On Wed, 24 Mar 2010 17:04:35 -0500, Barry Smith <bsmith at mcs.anl.gov>
> wrote:
> >
> >    Sorry, I was so stunned when I saw that option I just automatically
> > nuked it.
> >
> >    I have pushed 3.1 and dev with the option again.
> >
> >    Does your code support ghosted finite differences? With this option?
> It's a finite element code, this is the way to provide a local function
> (DMMGSetSNESLocal) that needs ghosting.  Of course it makes no sense to
> be a command line option.  Matt, you're welcome to provide a proper API,
> but the functionality has to be there.

Cool, I did not think anyone else was using it. Actually, this is an
design test case for the new-fangled DMMG stuff. It ought to make sense
specifying this in the new interface. The old DMMG had no good place to do



> Jed

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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