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

[Barry Smith]

  What is the domain suppose to be? The volume of a torus? What kind of "regular" grid are you mapping it to? Are you making sure the "regular grid" is periodic in that one direction? 


On Mar 26, 2013, at 7:58 PM, "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.
> 
> 
> 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
> <distribution.eps>