Barry, Elemental interface is not well tested yet. I would wait for few months to remove PLAPACK stuff.
Hong On Mon, Aug 13, 2012 at 11:50 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote: > On Mon, Aug 13, 2012 at 10:40 AM, Barry Smith <bsmith at mcs.anl.gov> wrote: > >> Should I remove all the MPIDense stuff from PETSc now? It is uses >> PLAPACK which is buggy and unsupported. > > > That is still a good distribution for MxN matrices with M>>N. We can do > them with Elemental, but that would use a different distribution so it will > be more complicated to interact with. (The current Elemental interface uses > a squarish distribution, but we can tell Elemental to use the [VC,*] > distribution (for which fewer operations are supported). > > The main thing I care about for that distribution is QR. The best format > is dense and row-aligned. I don't care whether it uses MPIDense or a new > "multi-vector" thing, but that concept should be somewhere. > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20120813/d5a2d49d/attachment.html>
