John Mousel <[email protected]> writes: > If I recall correctly, GAMG has a somewhat high setup cost and this is a > solver I'll only be using for one single solve. It's not a physical field, > it's just a marker; 1 inside, 0 outside a surface described by a CAD file. > This marker is being propagated into the volume of an octree volumetric > grid. I'm just taking advantage of the fact that the solution of the > Laplace equation with constant BC's is the constant.
Oh, I see. Enforce your boundary conditions so that the problems on each side decouple, then use -pc_gamg_agg_nsmooths 0 (unsmoothed aggregation). Profile and let us know if it's a bottleneck.
signature.asc
Description: PGP signature
