[MITgcm-devel] [MITgcm-cvs] MITgcm/pkg/seaice CVS Commit

[Martin Losch]

thanks,

Martin
On Oct 19, 2012, at 8:44 PM, Jean-Michel Campin wrote:

> Hi Martin,
> 
> I had a quick look at this, and it's true that it does not affect
> machine truncation in the forward part, but in the code that TAF returns,
> it's likely that the truncation errors are different (new S/R, less
> arrays than before, e.g., DRAGS is gone) and change a little bit (not
> much, just getting 12 instead of 13-14 before) the adjoint results.
> 
> So, going to update this output (lab_sea/results/output_adm.evp.txt).
> 
> Cheers,
> Jean-Michel
> 
> On Fri, Oct 19, 2012 at 04:05:18PM +0200, Martin Losch wrote:
>> Hi Jean-Michel,
>> 
>> I am sorry, I only checked the lab_sea adjoint on my machine and there I did not observe any changes.What I did is moved some code (computation of DWATN) into a subroutine, that can be called by all three solvers. I thought is was a good idea, maybe not? Would you expect changes in truncation? I wouldn't, but maybe I am wrong.
>> 
>> Martin
>> 
>> On Oct 19, 2012, at 3:34 PM, Jean-Michel Campin wrote:
>> 
>>> Hi Martin,
>>> 
>>> I found few changes in some seaice experiments results
>>> from the testreport output run over night (I don't have all 
>>> the output yet):
>>> - lab_sea.evp (adjoint, all tested platforms)
>>> - lab_sea (tlm)
>>> - global_ocean.cs32x15.seaice_dynmix (adjoint, different only on old 
>>>     aces cluster)
>>> Was this something expected (changes in machine truncation) ?
>>> Given that evp is ultra sensitive, it would not be surprising.
>>> 
>>> I might generate new lab_sea/results/output_adm.evp.txt 
>>> since now we only have 12 matching digits on baudelaire with gfortran 
>>> (ref. results).
>>> 
>>> Cheers,
>>> Jean-Michel
>>> 
>>> On Thu, Oct 18, 2012 at 06:06:42AM -0400, Martin Losch wrote:
>>>> Update of /u/gcmpack/MITgcm/pkg/seaice
>>>> In directory forge:/tmp/cvs-serv5849/pkg/seaice
>>>> 
>>>> Modified Files:
>>>> 	seaice_preconditioner.F seaice_lsr.F seaice_init_varia.F 
>>>> 	seaice_evp.F lsr.F dynsolver.F SEAICE.h 
>>>> Log Message:
>>>> - simplify (?) ocean-drag coefficent computations by using
>>>>   the same routine in all three solvers (saves some code lines)
>>>> - remove global fields DRAGA and DRAGS from C-grid code and
>>>>   declare them locally in lsr.F (the only place where they are
>>>>   still used)
>>>> 
>>>> 
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