[petsc-users] FETI-DP implementation and call sequence

[Matthew Knepley]

On Wed, Sep 3, 2014 at 8:51 AM, Alp Kalpalp <alpkalpalp at gmail.com> wrote:

> Dear Matt,
>
> While searcing inside of the petsc bundle, I have seen
>
> PCBDDCMatFETIDPGetRHS
> PCBDDCMatFETIDPGetSolution
> PCBDDCCreateFETIDPOperators
>
> also there is an example in
> petsc-3.5.1\src\ksp\ksp\examples\tutorials\ex59.c
>
> however I could not see it on webbrowser interface. Is this an pre-release
> code?
>

That is my understanding, but you should really talk to Stefano Zampini
directly.

   Matt


>
> On Wed, Sep 3, 2014 at 2:09 PM, Matthew Knepley <knepley at gmail.com> wrote:
>
>> On Wed, Sep 3, 2014 at 3:10 AM, Alp Kalpalp <alpkalpalp at gmail.com> wrote:
>>
>>> Hi,
>>>
>>> I need to investigate the performance of FETI-DP on a heteregenous
>>> problem with a proposed preconditioner/scaling and different parameters. I
>>> do not want to reinvent the known. I need to investigate the outcomes of my
>>> research on top of FETI-DP.
>>>
>>> I have seen several papers in literature discuss about the FETI-DP
>>> implementations in PetSc. However, seems none of them is provided in
>>> public. I have come across several functions in PetSc with *FETIDP* names.
>>> But, since this algorithm is quite different then the ksp algorithms, I
>>> could not figure out how to use them.
>>>
>>> I have two concrete questions;
>>>
>>> 1- Is it possible to complete a FETI-DP solution with the provided
>>> functions in current PetSc release?
>>>
>>
>> There is no FETI-DP in PETSc. However, I recommend mailing Oliver
>> Rheinbach to see about collaboration (http://www.uni-koeln.de/~orheinba/)
>>
>>   Thanks,
>>
>>       Matt
>>
>>
>>> 2- If so, what  is the calling sequence for these functions?
>>>
>>> Thanks in advance,
>>>
>>> Alp
>>>
>>
>>
>>
>> --
>> 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
>>
>
>


-- 
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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