On Mon, Jul 9, 2018 at 10:37 AM Dingwen Tao <[email protected]> wrote:
> All, > > We have some questions related to Algebraic Multigrid (AMG) method with > PETSc for solving large-scale systems of linear equations. Anyone with > experience can help? > > Questions: > (1) We know that PETSc can be used with HYPRE AMG preconditioner for > solving large-scale linear systems, while HYPRE also has an independent > multigrid linear solver as well. Anyone knows which one is more > frequently used in today's HPC applications? Or both of them are very > commonly used? > I am not sure which Hypre thing you are talking about. Is it the SStruct stuff? > (2) Anyone can give us a real HPC application example that uses PETSc with > HYPRE AMG preconditioner or HYPRE multigrid linear solver? We are looking > for a real HPC application as our research's motivation. > Yes, the excellent EXASTEEL project ( http://www.numerik.uni-koeln.de/14079.html) uses Hypre as the coarse grid solver for a large scale multiscale, multigrid iteration. Its very impressive and runs some of the largest problems I have seen for very complex materials. Thanks, Matt > Many thanks in advance! > > Best regards, > > Dingwen > > > -- > Dingwen Tao > Assistant Professor > The University of Alabama > > -- 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 https://www.cse.buffalo.edu/~knepley/ <http://www.caam.rice.edu/~mk51/>
