Puzzling error

[Satish Balay]

Things to check while upgrading to latest petsc:

- Does a ksp example work? - say src/ksp/ksp/examples/tutorials/ex2.c
- If the example works - and yours does not - whats the difference in usage?

For ex2, KSPRegisterAll() getrs called from KSPCreate()

(gdb) where
#0  KSPRegisterAll (path=0x0) at itregis.c:54
#1  0x00007f1ee1ef262e in KSPInitializePackage (path=0x0) at dlregisksp.c:107
#2  0x00007f1ee1f3b031 in KSPCreate (comm=1140850688, inksp=0x7fffea348188) at itcreate.c:383
#3  0x0000000000402259 in main (argc=1, args=0x7fffea3482b8) at ex2.c:157

Satish

On Sat, 26 Jul 2008, Matthew Knepley wrote:

> On Fri, Jul 25, 2008 at 8:56 PM, Kevin Ellwood <kellwood at gmail.com> wrote:
> > Hi and thanks.  Are there any example for the usage of these calls?
> 
> There is not really a "usage". They are supposed to be called automatically
> and you never know. However, when using ancient versions of petsc, sometimes
> things go wrong. I really encourage upgrading to the latest version.
> 
>   Thanks,
> 
>      Matt
> 
> > On Fri, Jul 25, 2008 at 5:21 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> >>
> >>  Kevin,
> >>
> >>   Make sure KSPRegisterAll() is called and that KSPRegister() is called
> >> specifically for KSPGMRES
> >>
> >>   Barry
> >>
> >> On Jul 25, 2008, at 4:12 PM, Kevin Ellwood wrote:
> >>
> >>> Hi All,
> >>>
> >>> I am trying to resurrect an old FEM code of mine that was based on a very
> >>> early version of PETSC (ie. 2.0.x).  I am go through all the changes and I
> >>> am pretty sure I have some issue to get through.  However, this set of
> >>> errors below from an early test run are puzzling me.  The relevant lines of
> >>> code are shown for setting two type of solvers.  Both generate an error
> >>> message indicating the Petsc can't find the KSP type once the KSPSolve is
> >>> called.   It seems odd that I can get such an error since  KSPBCGS and
> >>> KSPGMRES are define in petsc header files and can't be typos or
> >>> miss-spellings.
> >>>
> >>> I know I messed up somewhere.  Does anyone have advice as to where I
> >>> should start looking?
> >>>
> >>> Thanks
> >>> Kevin
> >>>
> >>>
> >>>         KSPSetType(ksp_solver,KSPBCGS);
> >>>         ierr = KSPSolve(ksp_solver, rhs, b); CHKERRQ(ierr);
> >>>
> >>> [0]PETSC ERROR: --------------------- Error Message
> >>> ------------------------------------
> >>> [0]PETSC ERROR: Unknown type. Check for miss-spelling or missing external
> >>> package needed for type!
> >>> [0]PETSC ERROR: Unable to find requested KSP type bcgs!
> >>>
> >>>
> >>>         KSPSetType(ksp_solver,KSPGMRES);
> >>>         ierr = KSPSolve(ksp_solver, rhs, b); CHKERRQ(ierr);
> >>>
> >>> [0]PETSC ERROR: --------------------- Error Message
> >>> ------------------------------------
> >>> [0]PETSC ERROR: Unknown type. Check for miss-spelling or missing external
> >>> package needed for type!
> >>> [0]PETSC ERROR: Unable to find requested KSP type gmres!
> >>> [0]PETSC ERROR:
> >>> ------------------------------------------------------------------------
> >>> [0]PETSC ERROR: Petsc Release Version 2.3.3, Patch 3, Fri Jun 15 16:51:25
> >>> CDT 2007 HG revision: f051789beadcd36f77fb6111d20225e26ed7cc0d
> >>>
> >>
> >
> >
> 
> 
> 
>