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

[Barry Smith]

On Mar 26, 2013, at 3:55 AM, "Anil ." <dasans at gmail.com> wrote:

> Attached is the output with 1 processor and one subdomain. It converges in 9 iterations.

   What does the convergence look like with -ksp_monitor_true_residual ?

> 
> What might be the reason for larger subdomain not to work?

   Did you try running with more iterations? What if you run with -ksp_gmres_restart 100 -ksp_max_it 100 -ksp_converged_reason -ksp_monitor_true_residual

Barry

> 
> 
> On Tue, Mar 26, 2013 at 12:59 AM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> 
>    What happens if you using one process and one subdomain resulting in the equivalent of a direct solver?
> 
>    Why did the iteration stop at 10 iterations? What is the message if you run with -ksp_converged_reason.
> 
>    Barry
> 
> On Mar 25, 2013, at 6:38 AM, "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
> >
> >
> > 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
> > <ksp_output>
> 
> 
> 
> 
> -- 
> Sincerely
> Anil Das P V
> <ksp_output1>