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[Nuno David Lopes <ndl@xxxxxxxxxxxxxx>]

>  Have you tried with ML (-pc_type
> ml -mat_no_inode)?  Multigrid should work very well for this problem.
It works!
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Solving linear system of size 566769 x 566769 (Krylov solver).
PETSc Krylov solver (gmres, ml) converged in 9 iterations.
End velocity Init Step after 113.390000 seconds.
_________________________________________________

SOR still is faster
___________________________________________________
Solving linear system of size 566769 x 566769 (Krylov solver).
PETSc Krylov solver (gmres, sor) converged in 35 iterations.
End velocity Init Step after 69.530000 seconds.
___________________________________________________

> Jed



-- 
Nuno David Lopes

e-mail:ndl@xxxxxxxxxxxxxx        (FCUL/CMAF)
           nlopes@xxxxxxxxxxxxxxx    (ISEL)
http://ptmat.ptmat.fc.ul.pt/%7Endl/ 

Thu Sep 25 12:30:54 WEST 2008