[petsc-dev] Issues trying to DM-ificate PetIGA

[Jed Brown]

Barry Smith <bsmith at mcs.anl.gov> writes:
>   Another alternative is to have inside the DMKSP a pointer to the
>   "active" KSP (make it a void pointer so that there is no circular
>   dependencies) 

DMKSP is in the KSP package, so there is no problem with circular dependencies.

>   and only use the DMKSP functions if the current KSP is the "active"
>   KSP.  Of course now we still need to set this pointer to the
>   appropriate KSP (the first one set with KSPSetDM()? by default). Is
>   there any advantage to this?  (Same for snes also).

I think it's cosmetic except that a DM field is more permissive in that
it could have a different DM. I can't think of a reason to want that.
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