[petsc-dev] [petsc-users] Poor weak scaling when solving successive linearsystems

[Mark Adams]

And with 7-point stensils and no large material discontinuities you
probably want -pc_gamg_square_graph 10 -pc_gamg_threshold 0.0 and you could
test the square graph parameter (eg, 1,2,3,4).

And I would definitely test hypre.

On Thu, Jun 14, 2018 at 8:54 AM Mark Adams <mfadams at lbl.gov> wrote:

>
>> Just -pc_type hypre instead of -pc_type gamg.
>>
>>
> And you need to have configured PETSc with hypre.
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20180614/b0c87a8e/attachment.html>