Right preconditioner shouldn't matter to the preconditioner at all. What is the complete error message. Does it run on one process?
Barry On Feb 1, 2011, at 2:32 PM, Ataollah Mesgarnejad wrote: > Barry, > > I did as you said and now I receive these errors once I try to run the > program: > > [3]PETSC ERROR: MatHYPRE_IJMatrixCreate() line 76 in src/dm/da/utils/mhyp.c > [3]PETSC ERROR: PCSetUp_HYPRE() line 112 in src/ksp/pc/impls/hypre/hypre.c > [3]PETSC ERROR: PCSetUp() line 795 in src/ksp/pc/interface/precon.c > [3]PETSC ERROR: KSPSetUp() line 237 in src/ksp/ksp/interface/itfunc.c > [3]PETSC ERROR: KSPSolve() line 353 in src/ksp/ksp/interface/itfunc.c > [3]PETSC ERROR: UStep() line 511 in PFMAT-FD.cpp > [4]PETSC ERROR: MatHYPRE_IJMatrixCreate() line 76 in src/dm/da/utils/mhyp.c > [4]PETSC ERROR: PCSetUp_HYPRE() line 112 in src/ksp/pc/impls/hypre/hypre.c > [4]PETSC ERROR: PCSetUp() line 795 in src/ksp/pc/interface/precon.c > [4]PETSC ERROR: KSPSetUp() line 237 in src/ksp/ksp/interface/itfunc.c > [3]PETSC ERROR: main() line 95 in PFMAT-main.cpp > [4]PETSC ERROR: KSPSolve() line 353 in src/ksp/ksp/interface/itfunc.c > [4]PETSC ERROR: UStep() line 511 in PFMAT-FD.cpp > [4]PETSC ERROR: main() line 95 in PFMAT-main.cpp > > Does right preconditiong work with HYPRE? > Best, > Ata > > On Tue, Feb 1, 2011 at 2:21 PM, Barry Smith <bsmith at mcs.anl.gov> wrote: > > The simplest thing is to simply run with -ksp_monitor_true_residual and see > how the convergence is going in the true residual norm also. > > You can also switch to right preconditioning with gmres and then the > residual used by gmres is the true residual norm. Use > -ksp_preconditioner_side right -ksp_norm_type unpreconditioned > > Barry > > > > On Feb 1, 2011, at 2:14 PM, Ataollah Mesgarnejad wrote: > > > Dear all, > > > > I'm using Ksp gmres with boomeramg preconditioning and I suspect that even > > though it converges in preconditioned norm it doesn't converge in true > > norm, but as I understand KSPSetNormType gmres does not support true > > residual norm? Is that correct and If it is, is there any other way to > > monitor the true norm? Do I need to Introduce my own convergence test? > > > > Best, > > A. Mesgarnejad > > > > > -- > A. Mesgarnejad > PhD Student, Research Assistant > Mechanical Engineering Department > Louisiana State University > 2203 Patrick F. Taylor Hall > Baton Rouge, La 70803
