On Mon, Aug 12, 2013 at 12:24 PM, Jim Fonseca <[email protected]> wrote:
> Hi, > We are curious about the mixed-precision capabilities in NEMO5. I see that > there is a newish configure option to allow single precision for linear > solve. Other than that, I found this old post: > https://lists.mcs.anl.gov/mailman/htdig/petsc-users/2012-August/014842.html > > Is there any other information about to see if we can take advantage of > this capability? > Mixed-precision is hard, and especially hard in PETSc because the C type system is limited. However, it also needs to be embedded in an algorithm that can take advantage of it. I would always start out with a clear motivation: - What would mixed precision accomplish in your code? - What is the most possible benefit you would see? and decide if that is worth a large time investment. > Thanks, > Jim > > -- > Jim Fonseca, PhD > Research Scientist > Network for Computational Nanotechnology > Purdue University > 765-496-6495 > www.jimfonseca.com > > > -- 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
