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

[Matthew Knepley]

On Wed, Aug 22, 2012 at 2:52 AM, C.-C. Chiou <ccchiou2012 at gmail.com> wrote:

> 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?
>

That is an experiment that does not yet work.


> In addition, is the KSP version available?
>

Its called ASM.

   Matt


> 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
>
>


-- 
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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