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

[Patrick Heimbach]

One guess/thing to try:
Revert cg2d.F routine to revision 1.47 by doing (in model/src):
cvs update -r 1.47 cg2d.F
see whether problem goes away,
then update to next revision:
cvs update -r 1.48 cg2d.F
and see whether problem starts.
This would isolate one set of changes performed in Sept. 2007.

-p.



On Feb 27, 2008, at 3:01 PM, Dimitris Menemenlis wrote:

> 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
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support

---
Patrick Heimbach | heimbach at mit.edu | http://www.mit.edu/~heimbach
MIT | EAPS 54-1518 | 77 Massachusetts Ave | Cambridge MA 02139 USA
FON +1-617-253-5259 | FAX +1-617-253-4464 | SKYPE patrick.heimbach