how to get the best solution

DevTeam devteam at transvalor.com
Wed May 3 08:34:56 CDT 2006


Hi all,
I'm a newbie with PetSc so sorry if it is a well known question (I've seen nothing in the  mailing archive).

I have a linear system wich is qui ill conditionned. So whatever solver and preconditionner I use convergence is a bit chaotic 
and it use to quit the solver when the maximum number of iteration has been reached with the last residual.

Last residual that is never the best residual found during the whole convergence path. Is there a way to get this best solution from PetSc ?

Thanks,
Etienne Perchat
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