[petsc-users] How to use

[Sharp Stone]

Hi Matt and Jed,

Thank you very much for your replies. In source code ex19, the routine
SNESSetNGS() is used, and no other options or Jacobi routines are used. How
can we change the iteration method? The routine SNESSetFromOptions(snes)
could do this for the user? If I understand correctly, petsc would use
Gauss-Seidel or Jacobi method as designated with even the same source code?

Thank you in advance!

On Thu, Oct 2, 2014 at 1:12 PM, Jed Brown <jed at jedbrown.org> wrote:

> Sharp Stone <thronesf at gmail.com> writes:
>
> > Matt,
> >
> > Thank you very much!
> >
> > The ex19 used the Gauss-Seidel method. But I'm a little bit wonder
> whether
> > we have any examples of Jacobi method to solve such linear systems
> "(mat)A
> > dot (vec)X = (vec)B" with dof>1? Thanks in advance!
>
> ex19 does whatever you want: -pc_type jacobi and the like.
>



-- 
Best regards,

Feng
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