[petsc-dev] Lower memory DMDA

[Peter Brune]

DMGetCoordinateDM is, however, collective.  Looking deeper, it is created
only when used, but setting uniform coordinates is using it.  We might want
to be more upfront about this.  It's probably not their problem.


On Wed, May 8, 2013 at 7:50 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> Peter Brune <prbrune at gmail.com> writes:
>
> > The coordinate DM also is automatically created and has dim fields in its
> > vectors, making it far more heavyweight than a scalar problem.  It should
> > definitely be something that's lazily evaluated.
>
> DMGetCoordinates() is currently labeled "Not Collective".
>
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