Hi We are planning a new (finite volume) multiblock code, in which each block has logically structured mesh. We plan to create one DMDA for one block (which could span across 1 or more processes; we already have code). What would be the recommended PETSc-way to couple these blocks together for implicit solves? We also need ghosted region between two connected blocks (just like the ghost regions among the subdomains within a DMDA) for interpolation.
Thanks. Shao-Ching
