> On 4 Mar 2016, at 15:24, Justin Chang <jychan...@gmail.com> wrote: > > So with -pc_gamg_square_graph 10 I get the following:
Because you're using gamg inside the fieldsplit, I think you need:
-fieldsplit_1_pc_gamg_square_graph 10
> [0] PCSetUp_GAMG(): level 0) N=48000, n data rows=1, n data cols=1, nnz/row
> (ave)=9, np=1
> [0] PCGAMGFilterGraph(): 55.7114% nnz after filtering, with threshold
> 0., 8.79533 nnz ave. (N=48000)
> [0] PCGAMGCoarsen_AGG(): Square Graph on level 1 of 1 to square
^^^^^
Cheers,
Lawrence
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