[petsc-users] Recommended solver and preconditioner to solve Poisson eqn on win7

[Barry Smith]

On Sep 14, 2012, at 3:47 AM, TAY wee-beng <zonexo at gmail.com> wrote:

> Hi,
> 
> I need to solve the Poisson eqn on my win7 machine. I'm currently using BCGS without preconditioner. I can't use HYPRE since I'm using Fortran and win7. It's rather slow.
> 
> Is there a recommended solver and preconditioner to solve the Poisson eqn to get me started?

   What kind of grid is it? 

   PETSc 3.3 and petsc-dev now has its own algebraic multigrid preconditioner called PCGAMG,  you should try that.

   Barry

> 
> Thanks!
> 
> -- 
> Yours sincerely,
> 
> TAY wee-beng
>