[petsc-users] KspTrueResidualNorm

Tue Feb 1 15:41:17 CST 2011

I already used Valgrind to check for memory and as far I can tell the
program was working fine. At this stage my concern is mainly about the
convergence of ksp solver. I can later try compiling with petsc-dev.

Thank you for your time,
Ata

On Tue, Feb 1, 2011 at 3:34 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>  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
>
>

-- 
A. Mesgarnejad
PhD Student, Research Assistant
Mechanical Engineering Department
Louisiana State University
2203 Patrick F. Taylor Hall
Baton Rouge, La 70803
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