[petsc-dev] PETSC application

[Matthew Knepley]

On Sat, Mar 6, 2010 at 11:49 PM, David sheehan <david.sheehanjr at gmail.com>wrote:

> Hi,
> I need your helps about PETSC as follows:
> 1) how can I call boomerAMG of HYPRE through PETSC as a solver and a
> preconditioner?
>

First, configure with Hypre . Then -pc_type hypre -pc_hypre_type boomeramg


> 2) how can I make a precondioner  from B matrix,  but apply the
> preconditioner to Ax=b in PETSC?
> Thanks in advance.
>

I cannot understand exactly what you mean. However, if you want to create a
PC based upon a matrix
which is not the system matrix A, you can specify it in KSPSetOperators().

  Matt


> David
>
-- 
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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