On 20 October 2011 19:34, Jeff Wiens wrote:
> Lisandro, the shared library was the problem. I seem to have
> everything working by including the --with-shared and --with-dynamic
> options in my PetSc 3.1 configuration.
>
The --with-dynamic stuff should not be required, and I think it's
better if
On 20 October 2011 17:05, Jeff Wiens wrote:
>
> The problem seems to be that PetSc is no longer initialised when you
> call a C function. If I initialise PETSc from C, the program works.
> However, if I don't call init() from C, the program won't use the
> python PetSc.
Mmm... I bet you built PET
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Thanks for all the answers!
First, I would like to see something printed to stdout, right now I don't.
Assuming my KSPMonitorSet call is correct, could it be that I don't
see anything because I'm using FGMRES? Should I get a warning
when using this monitor with any other KSP beside CG and GMRES?
On Thu, 2011-10-20 at 13:40 -0700, Jeff Wiens wrote:
> The point of the example was to perform the PetSc operation in C.
> Although you could do the dot product in Cython or Python, it defeats
> my purpose. I am attempting to write a wrapper for an existing PetSc C
> code base. I would like to setu
F +31 317 49 32 45, I www.marin.nl
>
>
--
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
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I'm confused about how to use KSPMonitorSingularValue
in my fortran code (not using the options database)
By looking at ex30.c I have:
call KSPMonitorSet(ksp,KSPMonitorSingularValue,PETSC_NULL,PETSC_NULL,ierr);
call KSPSetComputeSingularValues(ksp,PETSC_TRUE,ierr)
in the part where I initialize
On Thu, 2011-10-20 at 13:05 -0700, Jeff Wiens wrote:
> Eventually, I would like
> to Initialise PETSc and construct my PETSc vectors in python and then
> have my C code perform operations on them. Again, this yet another
> test problem.
>
Maybe I don't completely understand your planned working m
The point of the example was to perform the PetSc operation in C.
Although you could do the dot product in Cython or Python, it defeats
my purpose. I am attempting to write a wrapper for an existing PetSc C
code base. I would like to setup PetSc and construct the initial
conditions from python. I w
I am in the process of learning PetSc 3.1 and petsc4py 1.2. Since
there is so little documentation for petsc4py, I am resorting to the
PetSc mailing list. If anyone knows any resources for petsc4py, it
would be really helpful.
I am attempting to make a simple test problem where I
1) Initialise Pe
remeSingularValues(), for example.
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cErrorCode
(*)(void**))PetscViewerDestroy);CHKERRQ(ierr);
}
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ace could be losing orthogonality. You can try
-ksp_gmres_modifiedgramschmidt. Are you losing a lot of progress in
restarts?
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trix associated
with last restart. If you want meaningful estimates with GMRES, you really
can't use restarts.
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to extract estimates of the singular
values after KSPSolve has converged? You might be interested
in KSPComputeExtremeSingularValues(), for example.
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nters take for granted before they begin their
> experiments is infinitely more interesting than any results to which their
> experiments lead.
> -- Norbert Wiener
>
--
Best regards,
Alexey Ryazanov
__
Nuclear Safety Institute of Russian Academy of Sciences
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it so here it is.
>
>
> Barry
>
>
>
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