[petsc-users] Data transfer between DMDA-managed Vecs

[Constantine Khrulev]

Hi,

I would like to transfer values from one DMDA-managed Vec (i.e. created 
using DMCreateGlobalVector() or equivalent) to a Vec managed using a 
different DMDA instance (same number of elements, same number of degrees 
of freedom, *different* domain decomposition).

What approach would you recommend?

Bonus question: what about DMDAs using different MPI communicators?

Thanks!

--
Constantine