[petsc-users] dense matrix problem

[Jed Brown]

"result is incorrect" is not helpful. Please include diagnostics. Are you
using an iterative or direct solver? Start here if you don't know what to
check:

http://scicomp.stackexchange.com/questions/513/why-is-my-iterative-linear-solver-not-converging


On Thu, Jan 31, 2013 at 9:58 AM, Alex Salazar <alejandrocof at gmail.com>wrote:

> Hello, everyone
>
> I want to get the solution of algrebraic system (with a  dense
> zero-diagonal simetric matrix) of a interpolation problem (using radial
> basis functions) with Petsc.
>
>  For a few points (around 10 elements) using KSP I get the correct
> solution,  however when  I increase the number of points,  the result is
> incorrect.
>
> Any Idea ?
>
> Regards Alejandro.
>
>
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