On 1/23/2012 12:53 AM, Jed Brown wrote:
> On Sun, Jan 22, 2012 at 23:38, Michael Povolotskyi
> <[email protected] <mailto:[email protected]>> wrote:
>
> Here it is ( I put a break point at PetscError):
>
>
> Did you implement a Jacobian evaluation routine? You can run with
> -snes_mf to use matrix-free finite differencing with no
> preconditioner, but convergence may be very slow.
>
Yes, I have my Jacobian evaluation.
When I use -snes_mf, it does crash, but there is no convergence.
Do you have an idea what can be the problem?
Michael.
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