[petsc-users] AMG as preconditioner

[Matthew Knepley]

On Wed, Dec 14, 2011 at 8:04 AM, M.Younas <m.younas at rug.nl> wrote:

>  Hi, PETSc, Team,
>
> I have solved a non-symmetric Poisson problem using GMRES(m) as solver and
> BoomerAMG (from Hypre) as preconditioner. But I don't understand how the
> BoomerAMG works as preconditioner with GMRES(m). Can anyone explain the
> procedure? Does it work like BoomerAMG precondition the liner system first
> (once only) and then GMRES(m) is being used for stopping criterion?
>

Please see Yousef Saad's book on Iterative Solution of Linear Systems. Its
available on his homepage.

  Matt


> Kind regards,
>
> Younas
>
> RUG, Groningen, The Netherlands.




-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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