Il 02 Feb 2017 23:43, "Mark Adams" <[email protected]> ha scritto:
On Thu, Feb 2, 2017 at 12:02 PM, Stefano Zampini <[email protected]> wrote: > Mark, > > I saw your configuration has hypre. If you could run with master, you may > try -matptap_via hypre. > This is worth trying. Does this even work with GAMG? Yes, it should work, except that the block sizes, if any, are not propagated to the resulting matrix. I can add it if you need it. Treb: try hypre anyway. It has its own RAP code. With that option, you will use hypre's RAP with MATAIJ It uses BoomerAMGBuildCoarseOperator directly with the AIJ matrices. > > Stefano > > On Feb 2, 2017, at 7:28 PM, Mark Adams <[email protected]> wrote: > > > > On Thu, Feb 2, 2017 at 11:13 AM, Hong <[email protected]> wrote: > >> Mark: >> Try '-matmatmult_via scalable' first. If this works, should we set it as >> default? >> > > If it is robust I would say yes unless it is noticeably slower (say >20%) > small scale problems. > > >
