[petsc-users] Is there a way to do row/column scaling of jacobian matrix

[Barry Smith]

On Apr 4, 2011, at 10:16 PM, Gong Ding wrote:

> Hi,
> I'd like to scaling the jacobian matrix as if the condition number can be improved.
> That is scaling J by Dl*J*Dr. The scaling diagonal matrix will be changed in each nonlinear iteration.
> 
   Would this be in addition to building a preconditioner from the resulting scaled matrix? Or do you just want to use a symmetric Jacobi preconditioner?

   Barry

> Does SNES already exist some interface to do this?
> 
> 
> 
> 
>