[petsc-users] Solving upper triangular system with pc fieldsplit

[Matthew Knepley]

On Mon, Aug 20, 2012 at 3:09 AM, Thomas Witkowski <
thomas.witkowski at tu-dresden.de> wrote:

> Is it possible to change the PCFIELDSPLIT / block Gauss-Seidel
> preconditioner to use A_01 instead of A_10 to solve an upper triangular
> system?


It always uses A_01. What exactly do you want to do?

   Matt


>
> Thomas
>



-- 
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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