[petsc-dev] [petsc-users] MatGetSubMatrices or VecCreateGhost

[Jed Brown]

Barry Smith <bsmith at mcs.anl.gov> writes:
>    We don't have a parallel 

Elemental makes sense here; the 2D distribution will scale much better.

Note that MatTransposeMatMult_MPIDense_MPIDense is fairly trivial and
very useful for tall-skinny matrices, which is the case in which the
MPIDense distribution ([VC,*] in Elemental vernacular) actually makes
sense.
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