[MITgcm-support] Something very slow has happened to the pressuresolver

[Dimitris Menemenlis]

It should not be ... but cg2d_iters is what sets how long the solver takes to 
compute.  This would be a sanity check whether you are indeed setting all the 
options the same, etc.  D.

>> Christopher, I am no expert on solve_for_pressure but first thing I would
>> look at is the number of cg2d_iters that it does.  Set ALLOW_DEBUG and
>> debuglevel=1
> 
> I'll check it, but should the number be different for two runs differing only
> by the code itself?
> 
> Christopher