[petsc-users] GAMG speed

[Jed Brown]

Barry Smith <bsmith at mcs.anl.gov> writes:
>    By default it uses a direct solver (maybe even sequential) for the
>    coarsest level; 

Redundant, in fact, so it uses the full amount of memory on every core.


I think we should probably change this default solve to gather and
scatter rather than compute it redundantly.
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