Petsc command to get the conditionning of matrices

Matthew Knepley knepley at
Thu Jul 16 05:39:45 CDT 2009

You can try -ksp_monitor_singular_value.


On Thu, Jul 16, 2009 at 4:44 AM, STEPHANE TCHOUANMO <tchouanm at>wrote:

>  Dear all,
> I solve a non-linear problem in Petsc using the classical Newton
> method. I give to Petsc the jacobian matrix and residuals at each Newton
> iteration.
> Is there a way to get the conditionning of my Jacobian matrices? like a
> command when running my exectable (-ksp_.. or -snes_.. or -pc_..)
> Thanks.
> Stephane
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