[petsc-users] KspTrueResidualNorm

[Barry Smith]

  Suggest running with valgrind http://www.mcs.anl.gov/petsc/petsc-as/documentation/faq.html#valgrind to see if there is some memory corruption. If that doesn't help suggest a build with MPICH to see if the same or a different problem happens. 

   Getting a partial error message like this is not normal and rarely seen.

    Barry

On Feb 1, 2011, at 3:32 PM, Matthew Knepley wrote:

> On Tue, Feb 1, 2011 at 3:27 PM, Ataollah Mesgarnejad <amesga1 at tigers.lsu.edu> wrote:
> I compile it with openmpi and it runs on 5 cores. And thats all the error message from PETSC. the compelete output looks like this:
> 
> Something is wrong with your output gathering. It would indicate the error, or a signal received.
> 
>    Matt
>  
> [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
> --------------------------------------------------------------------------
> MPI_ABORT was invoked on rank 3 in communicator MPI_COMM_WORLD 
> with errorcode 1.
> 
> NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.
> You may or may not see output from other processes, depending on
> exactly when Open MPI kills them.
> --------------------------------------------------------------------------
> --------------------------------------------------------------------------
> mpirun has exited due to process rank 3 with PID 3845 on
> node me-1203svr3.lsu.edu exiting without calling "finalize". This may
> have caused other processes in the application to be
> terminated by signals sent by mpirun (as reported here).
> 
> Best,
> Ata
> 
> On Tue, Feb 1, 2011 at 2:35 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> 
>  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
> 
> 
> 
> 
> -- 
> A. Mesgarnejad
> PhD Student, Research Assistant
> Mechanical Engineering Department
> Louisiana State University
> 2203 Patrick F. Taylor Hall
> Baton Rouge, La 70803
> 
> 
> 
> -- 
> 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