[Nek5000-users] coarse solver iteration count

[johan at mech.kth.se]

I agree on this. At least if one can be sure that the not fully  
converged pressure will not cause a blow up later on.

Johan

Quoting Paul Fischer <fischer at mcs.anl.gov>:

>
> I think we should lower the default coarse grid solve iteration
> count to max of 100.
>
> In general, it's not too bad if it fails to converge.  The code will
> typically get the velocity projected onto a div-free space within a few
> steps anyway.   However, if it takes interminably long to solve
> the pressure than one can't know if the code has hung or is just
> iterating away.
>
> Thoughts?
>
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