On Thu, Jan 29, 2009 at 7:46 PM, jerome ho <jerome.snho at gmail.com> wrote: > Hi > > I wonder if there's any way I can speed up KSPSetUp()? > On larger test cases with 1e8 unknowns, it's taking more than 17 hours (and > still incomplete) to execute this command across 3 processors with > BoomerAMG, > where as the whole setup+solving takes 2 min if the problem size is 1e6. > > I've verified that the matrices has completed assembly and I'm using the > non-debugging Petsc version.
We have no control over the code in Hypre. I suggest mailing the Hypre developers. The setup phase is the most costly part. Matt > Jerome -- 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
