[petsc-users] Ainsworth formula to solve saddle point problems / preconditioner for shell matrices

[Olivier Jamond]

>   We'd be interested in hearing about your convergence and timing 
> experiences when you run largish jobs (even sequentially) since this 
> type of problem comes up relatively frequently and we do need a 
> variety of solvers that can handle it while currently we do not have 
> great tools for it.

Of course I will keep you in touch with the results of this 'ainsworht' 
approach! I also plan to compare it with the new 'GKB' approach of 
PCFIELDSPLIT.

Many thanks,
Olivier