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
>>>
>>
>
>
--
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
