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'm not sure what you mean either but PETSc has an interface to Hypre/BoomerAMG which is an AMG solver that is used by a lot of applications. PETSc has a native AMG solver GAMG. You should start with either one and try both. > (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. > As I said there are lots. Here are two that use PETSc AMG, including hypre and gamg: https://hbps.pppl.gov/computing/xgc-1 and https://www.alcf.anl.gov/projects/chombo-crunch-advanced-simulation-subsurface-flow-and-reactive-transport-processes > > Many thanks in advance! > > Best regards, > > Dingwen > > > -- > Dingwen Tao > Assistant Professor > The University of Alabama > >
