On Wed, Mar 26, 2014 at 9:59 AM, TAY wee-beng <[email protected]> wrote:
> Hi, > > I am running a CFD solver. The Poisson eqn was originally solved using > HYPRE's geometric multigrid. > Is this on a structured grid? Matt > Recently, I tested it with Boomeramg as the preconditioner and GMRES as > the ksp solver. There's a 20% increase in speed. > > However, when I increased the grid resolution, I got the out of memory > error. Changing the solver back to HYPRE solved the problem. > > So does GMRES + Boomeramg used more memory than other solvers? Are there > alternatives? > > Thank you. > > -- > Yours sincerely, > > TAY wee-beng > > -- 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
