Mark Adams <[email protected]> writes: > On Wed, Apr 26, 2017 at 7:30 PM, Barry Smith <[email protected]> wrote: > >> >> Yes, you asked for LU so it used LU! >> >> Of course for smaller coarse grids and large numbers of processes this >> is very inefficient. >> >> The default behavior for GAMG is probably what you want. In that case >> it is equivalent to >> -mg_coarse_pc_type bjacobi --mg_coarse_sub_pc_type lu. But GAMG tries >> hard > > > No, it just slams those puppies onto proc 0 :)
Mark is a puppy slammer.
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