[petsc-dev] SNES, Coloring, DM, and TS

[Jed Brown]

On Mon, Feb 27, 2012 at 10:55, Dmitry Karpeev <karpeev at mcs.anl.gov> wrote:

> Why is a nonlinear problem not part of the DM interface?  In my mind a DM
> encapsulates a problem, that also knows
> how to linearize/split/coarsen/refine itself by returning the
> corresponding subDMs.
>

SNES depends on DM, not the other way around.

In some cases, the callback needs access to the TS or SNES because it is
doing some configuration or wants to hack in some logic. The DM callbacks
don't pass that parameter on. If they did pass it on, that part of the
interface could not sit in src/dm.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20120227/7ab4b4ed/attachment.html>