[petsc-users] Trying to modify petrbf to use custom text file

[Anil .]

Matt,

Petsc Options I use to run are....
mpirun -np 4 ./reader -pc_type asm -sub_pc_type lu -sub_mat_type dense
-ksp_monitor -ksp_rtol 1e-13 -ksp_max_it 100 -vecscatter_alltoall
-log_summary
Attached is the output..It also contains my petsc configuration



On Wed, Mar 27, 2013 at 7:59 AM, Matthew Knepley <knepley at gmail.com> wrote:

> On Wed, Mar 27, 2013 at 11:58 AM, Anil . <dasans at gmail.com> wrote:
>
>> Matt,
>>
>> I am having around 3481 particles that are placed in an unstructured
>> manner.
>> Attached is the image showing the distribution.
>>
>
>  Show me your PETSc options, and try playing with the number of blocks. If
> you look
> at the PetRBF paper, we give guidance for choosing the sizes.
>
>    Matt
>
>
>>
>> On Tue, Mar 26, 2013 at 11:45 PM, Matthew Knepley <knepley at gmail.com>wrote:
>>
>>> On Mon, Mar 25, 2013 at 10:38 PM, Anil . <dasans at gmail.com> wrote:
>>>
>>>> 1) Could not find the petrbf mailing list
>>>> 2) Petrbf runs perfectly
>>>> 3) Attached is the output with -ksp_view -ksp_monitor
>>>>
>>>> Just point me in the right direction. Issues might be very basic as I
>>>> am starting to use Petsc
>>>>
>>>
>>> This output is a little strange. Some partitions have 0 entries. I am
>>> guessing this problem is very
>>> small. For PeRBF, it does turn out to be optimal to use small blocks,
>>> but the block size depends
>>> on your interaction scale. Right now you have 75 blocks, which might be
>>> too many for your small
>>> problem.
>>>
>>>    Matt
>>>
>>>
>>>> On Sat, Mar 23, 2013 at 2:18 AM, Matthew Knepley <knepley at gmail.com>wrote:
>>>>
>>>>> On Fri, Mar 22, 2013 at 10:58 PM, Anil . <dasans at gmail.com> wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I have a text file containing N rows.
>>>>>> Each row with x,y,omega values.
>>>>>> I am trying to interpolate this data onto a regular grid using petrbf
>>>>>> But the KSP does not converge and am not able to find the reason.
>>>>>>
>>>>>> The code is available with the text files at
>>>>>> https://www.dropbox.com/s/cypuwugbxo07kx0/rbf-interpolation.tar.gz
>>>>>>
>>>>>> I am very new to petsc and any direction how o proceed would be
>>>>>> helpful.
>>>>>>
>>>>>
>>>>> 1) Did you mail the petrbf list?
>>>>>
>>>>> 2) Could you run the petrbf examples?
>>>>>
>>>>> 3) We cannot tell anything about convergence without the output of
>>>>> -ksp_view -ksp_monitor.
>>>>>
>>>>>    Matt
>>>>>
>>>>>
>>>>>> --
>>>>>> Sincerely
>>>>>> Anil Das P V
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> 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
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Sincerely
>>>> Anil Das P V
>>>>
>>>
>>>
>>>
>>> --
>>> 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
>>>
>>
>>
>>
>> --
>> Sincerely
>> Anil Das P V
>>
>
>
>
> --
> 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
>



-- 
Sincerely
Anil Das P V
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