[petsc-users] Get Stuck in SNES

[Jed Brown]

On Mon, Nov 21, 2011 at 02:33, behzad baghapour
<behzad.baghapour at gmail.com>wrote:

> Dear Developers,
>
> I've finished programming with SNES. But when I run, SNES just do one
> Nonlinear iteration and comes out !!!
> I check that the residual evaluation is correct BUT the linear solver may
> not work while the number of linear iteration is "0". I also check that the
> jacobian routine is called during process but I don't know how to check the
> jacobian and preconditioner in SNES to ensure the correct values.
>

-snes_converged_reason -ksp_converged_reason


>
> Here I want to know what procedure I should do and where is the beginning
> point for debugging with SNES?
>

http://www.mcs.anl.gov/petsc/documentation/faq.html#newton
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