[MITgcm-devel] Fwd: [MITgcm-cvs] MITgcm/doc CVS Commit

[Jean-Michel Campin]

Hi Martin,

I don't understand your concern about pickup.
I wrote in an email to the MITgcm-devel list on Wed, 17 Jun:
> Apart from that, I think we only store level1 in pickup-files.
so it should not be a problem, right ?

There are other things that I don't follow very well (when I 
looked to the code to fix the broken MPI+MTH, the copy in 
tmpFld is also repeated inside S/R ADVECT; gtmpFlg is not
used to store a tendency, right ?). 

And regarding the adjoint, yes we are getting (in taf_ad.log) a lot of 
TAF Warning, extensive recomputation (and variables you added
are also listed). Now on faulks, it takes about 1.h 15mn to run
each of the lab_sea test (compared to 30 to 35 second before).
And similar slow-down for offline_exf_seaice.

We had in mind to make a tag at some point, but it's little bit
unfortunate that the seaice-pkg adjoint is not in its best shape.

Cheers,
Jean-Michel

On Tue, Jun 23, 2009 at 08:54:56AM +0200, Martin Losch wrote:
> Hi Patrich, not sure I can manage to do that today (too many meetings  
> and I am not feeling to well). Also I don't really know how to do it  
> right? Do I just replace the 3D fields by 2D fields in the seaice_read/ 
> write_pickup.F and that works?
> I'll give it a shot asap.
>
> Martin
> PS. did I break the adjoint? Most likely in advect.F
>
> On Jun 22, 2009, at 9:19 PM, Patrick Heimbach wrote:
>
>>
>> Hi Martin,
>>
>> J.M. and I were wondering whether you are trying
>> to avoid some important work (hence lots of work on pkg/seaice)
>> ;o)
>>
>> Since you're 1/2 way through with code modif's it might now be best
>> to complete the changes by removing the 3D fields altogether,
>> and I'll try to catch up with the adjoint after it's all done.
>> What do you think?
>>
>> Cheers
>> -p.
>>
>> Begin forwarded message:
>>
>>> From: Martin Losch <mlosch at mitgcm.org>
>>> Date: June 22, 2009 11:58:42 AM EDT
>>> To: mitgcm-cvs at mitgcm.org
>>> Subject: [MITgcm-cvs] MITgcm/doc CVS Commit
>>> Reply-To: MITgcm-cvs at mitgcm.org
>>>
>>> Update of /u/gcmpack/MITgcm/doc
>>> In directory forge:/tmp/cvs-serv27539/doc
>>>
>>> Modified Files:
>>> 	tag-index
>>> Log Message:
>>> document first steps in cleaning up the 3-time levels of  
>>> UICE,VICE,HEFF,AREA:
>>>  1. introduce fields for time step (N-1 = *Nm1)
>>>  2. do not use levels 2 and 3 anymore (but they are still around)
>>>
>>> these changes probably break the adjoint, but the pickup is still
>>> working, so I am stopping now to give P. a chance to fix the adjoint
>>> if necessary and then I will get rid of the 3D fields altogether
>>> carefully taking into account the pickup (not clear how).
>>>
>>> _______________________________________________
>>> MITgcm-cvs mailing list
>>> MITgcm-cvs at mitgcm.org
>>> http://mitgcm.org/mailman/listinfo/mitgcm-cvs
>>
>> ---
>> 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
>>
>>
>> _______________________________________________
>> MITgcm-devel mailing list
>> MITgcm-devel at mitgcm.org
>> http://mitgcm.org/mailman/listinfo/mitgcm-devel
>
> _______________________________________________
> MITgcm-devel mailing list
> MITgcm-devel at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-devel