On Mon, Jan 25, 2016 at 11:00 AM, <[email protected]> wrote:
> Send petsc-dev mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.mcs.anl.gov/mailman/listinfo/petsc-dev > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of petsc-dev digest..." > > > Today's Topics: > > 1. Possible Givens Project (Matthew Knepley) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 24 Jan 2016 20:34:07 -0600 > From: Matthew Knepley <[email protected]> > To: PETSc <[email protected]> > Subject: [petsc-dev] Possible Givens Project > Message-ID: > <CAMYG4Gk1z_KGg=cgmfxzakRmO65hE3PqbNc=SURnPhnvQk5Y= > [email protected]> > Content-Type: text/plain; charset="utf-8" > > Some parts of SNES need real help. > > 1) NGMRES is purely serial > > This just requires a parallel TSQR. We could just write it, since I was > trying to avoid > a hard dependency on Elemental until Jack has a Damascene conversion and > rewrites > it in C using regular make, but that is a game-time decision. > > 2) NASM needs to really work > > It needs to be rewritten, generalized, and streamlined so that it can do > everything that > student of Xiao-Chuan are currently doing by hand. This seems like the most > important > thing to me. > I think we possibly also need to support NASM at a pure algebraic level. ASPIN requires us explicitly set the domain decomposition, but in fact this information could be extracted from the matrix and vector layouts. > > 3) The internals are a mess > > I have a branch knepley/snes-rewrite that completely reworks the internals > and I think > makes them much easier to understand and maintain. This project would > mostly be > getting the tests in a state that switching over made sense. > > Matt > > -- > What most experimenters take for granted before they begin their > experiments is infinitely more interesting than any results to which their > experiments lead. > -- Norbert Wiener > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20160124/621975c1/attachment-0001.html > > > > ------------------------------ > > _______________________________________________ > petsc-dev mailing list > [email protected] > https://lists.mcs.anl.gov/mailman/listinfo/petsc-dev > > > End of petsc-dev Digest, Vol 85, Issue 16 > ***************************************** >
