[petsc-users] Setting block size for MPI vectors

[Jed Brown]

Barry Smith <bsmith at mcs.anl.gov> writes:
>    Our longer term plan is that most PETSc programs would not directly
>    be creating Vecs and Mats with VecCreate… or MatCreate… rather they
>    would create a DM and then use the DM object to create the
>    appropriately laid out vectors and matrices for the users and
>    solvers with DMCreateGlobalVector() etc.

I don't think that's ever going to be a general solution, so "raw" Vec
creation will always matter too.
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