Dear Derek,
On Thu, 20 Aug 2009, Derek Gaston wrote:
> On Aug 20, 2009, at 2:15 AM, Tim Kroeger wrote:
>
>> Can it reuse a precoditioner between successive solves without setting it
>> up again?
>
> It can if you create a Preconditioner that acts that way. It sounds like
> what you might want
On Aug 20, 2009, at 2:15 AM, Tim Kroeger wrote:
> I see that there is now a Preconditioner class in libMesh that has not
> been there in earlier times. Is that in a usable state?
Yes it is... in fact you've probably already been using it! The
PetscPreconditioner gets used by default now.
> C
Dear all,
I'm implementing a Runge-Kutta scheme where inside each time step I
have to solve three linear systems with the same matrix but different
right hand sides. I'm using the ShellMatrix concept since the matrix
is of the type
A = B + v*w^T
where B is sparse. Also, the matrix seems to
