Petsc-future: Hierarchies of data and different sizes/shapes of data
All Petsc-future issues begin their title with Petsc-future: and have the milestone and label of petsc-future.
Use #643 "Petsc-future: General non-technical discussion for non-technical discussions.
This issue is for technical discussions about how to make petsc-future much easier to develop for when working with nested hierarchies of vectors, matrices, Hessians etc and very different sized and shaped ones in the same simulation.