Please keep the list Cc'd. Randall Mackie <rlmackie...@gmail.com> writes:
>> On Mar 5, 2015, at 11:17 AM, Jed Brown <j...@jedbrown.org> wrote: >> >> Barry Smith <bsm...@mcs.anl.gov> writes: >> >>> This should not happen, probably you are working with a MPIAIJ >>> matrix >> >> Randall, it sounds like you are creating an MPIAIJ matrix even in >> serial. Meanwhile, GAMG creates a SeqAIJ prolongation operator (when >> running in serial). Why are you creating an MPIAIJ matrix in serial? >> (Maybe you have MATMPIAIJ where it could be MATAIJ?) > > Well, I am creating an MPIAIJ matrix because that's what I've used for years, > and it's never been a problem when I've tested on 1 process before, but then > it's only been recently that I've been using GAMG for this particular solve. > > I will switch to MATAIJ and try again. Thanks. Avoiding over-specification is good.
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