On Sat, Feb 25, 2012 at 12:23, Jed Brown <jedbrown at mcs.anl.gov> wrote:
> I now realize a weakness in my PF transformation suggestion: it doesn't > work with vector elements (Raviart-Thomas or Nedelec) or staggered grids. I > don't know a way to include that with the ability to transform from > conservative to primitive variables. This is unfortunate because many > important preconditioning methods operate in different variables than the > nonlinear system is defined in. This is to say, that sort of transformation can't reasonably be _implemented_ using only DM base, it has to be implemented using DMXXXSet* methods. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20120225/346cd01a/attachment.html>
