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

[Anil .]

Barry,

Its 2D domain. Its a simulation of flow past an ellipse.
Currently I am trying to compute only the weights associated with each
initial points using RBF.
Using these weights I will then interpolate onto regular grid.
I have not added interpolating onto regular grid yet. It diverges while
computing the weights.


On Wed, Mar 27, 2013 at 7:34 AM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>   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>
>
>


-- 
Sincerely
Anil Das P V
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