[petsc-users] An advice on a linear system solution

[Jed Brown]

Umut Tabak <u.tabak at tudelft.nl> writes:
> Thx for the swift reply, well, you mean directly or iteratively? I 
> looked a bit more but I am not sure if that is possible iteratively or 
> not, I guess it is not since the character of the blocks on the diagonal 
> are not well suited to iterative solution techniques. Maybe I should 
> look into field split documentation once more.

The first step to using fieldsplit is developing a good solver for (one
of) the diagonal blocks.  If you don't have that yet, consult the
literature and run experiments.  Good luck.
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