[petsc-dev] [petsc-users] VECMPICUSP with ghosted vector

[Barry Smith]

On Feb 6, 2012, at 3:55 PM, Jed Brown wrote:

> On Mon, Feb 6, 2012 at 22:11, Barry Smith <bsmith at mcs.anl.gov> wrote:
>   On the other hand you could argue that ALL vector types should support ghosting as a natural thing (with sequential vectors just have 0 length ghosts conceptually) then it would be desirable to allow setting the ghost information in any ordering.
> 
> Just a comment: Ghost vectors are occasionally meaningful even for serial vectors (if implementing boundary conditions with ghost cells, also coupling).

   This is fine, currently one needs to use the MPI vector implementation to get this affect; I think it is natural this way and not also require VECSEQ to support this kind of ghosting.

   Barry