[petsc-users] The possibility of applying DA to governing multi-block data structure

[C.-C. Chiou]

Dear Mathew,

Thanks for your response!

At line 645 in the source code,
http://www.mcs.anl.gov/petsc/petsc-dev/include/petscsnes.h.html ,
some SNES routines for multi-block solver were listed.
Is there any source code for specific testing PDE problem with these
routines?

In addition, is the KSP version available?

Sincerely regards.

Chuei-Ching Chiou


On Wed, Aug 8, 2012 at 9:06 PM, Matthew Knepley <knepley at gmail.com> wrote:

> On Wed, Aug 8, 2012 at 2:30 AM, C.-C. Chiou <ccchiou2012 at gmail.com> wrote:
>
>> Dear all,
>>
>> For concerning more general geometry of physical domain, for some
>> situations,
>> we need to apply the multi-block mesh. The attached figure (or
>> alternatively the following link) illustrates one of examples.
>>
>> https://dl.dropbox.com/u/17189529/share_documents/IMAG0003.jpg
>>
>> Have you ever dealt with such kind of case with application of the PETSc
>> object 'DA' ?
>>
>
> Our intention for this is that you use a DMComposite structure. Let us
> know if the documentation is unclear
> on anything, since it is somewhat new.
>
>   Thanks,
>
>      Matt
>
>
>> Suppose we build multiple DA(or DM) for governing the multi-block data
>> structure,
>> in other words, we respectively build a DA for each block of mesh.
>> Especially in parallel computing,
>> how can we manage and control the communications between blocks of data
>> accurately and efficiently?
>> And, how can we ensure the correctness of parallel computational results?
>>
>> I wonder whether some possible application of PETSc object 'DA' (or DM)
>> is sufficient for dealing with cases in multi-block mesh.
>>
>>
>> Sincerely regards.
>>
>>
>> Chuei-Ching Chiou
>>
>>
>> --
>> Chuei-Ching Chiou,
>> Ph. D student,
>> Aerothermal & Plasma Physics Laboratory
>> Department of Mechanical Engineering
>> National Chiao Tung University
>> Hsinchu 30010, TAIWAN
>> TEL: +886-35712121 ext. 55175
>> E-mail: C <staystay.me99g at g2.nctu.edu.tw>CChiou2012 at gmail.com
>>
>>
>
>
> --
> 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
>



-- 
Chuei-Ching Chiou,
Ph. D student,
Aerothermal & Plasma Physics Laboratory
Department of Mechanical Engineering
National Chiao Tung University
Hsinchu 30010, TAIWAN
TEL: +886-35712121 ext. 55175
E-mail: C <staystay.me99g at g2.nctu.edu.tw>CChiou2012 at gmail.com
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