On Nov 30, 2012 11:17 AM, "Barry Smith" <bsmith at mcs.anl.gov> wrote: > > > I would like to add to the _p_DM struct > > PetscObject dmksp, dmsnes, dmts. > > The current model that uses PetscObjectCompose() is a mis-use of PetscObjectCompose(), why? > > The PetscObjectQuery() is always used for every function evaluation in every time step, every Newton step, ? > > 1) this is a performance problem with small size ODEs for example > > 2) PetscObjectQuery is suppose to be for exceptional things that occur seldomly, not ones that occur inside the main computational routes. > > > > Please send any technical (not philosophical) reasons why making this change is a bad idea and will haunt us later.
There is an extensibility problem that Jed has already noted. Matt > Barry > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20121130/64f5c7f4/attachment.html>
