[MITgcm-devel] SEAICE_OLD_AND_BAD_DISCRETIZATION

Wed Nov 3 09:41:09 EDT 2010

No objection.
I have not used old discretization for quite some time.
Dimitris

On Nov 3, 2010, at 3:56 AM, Martin Losch wrote:

> Hi there,
> 
> a year has passed, it's time for yet another push towards removing SEAICE_OLD_AND_BAD_DISCRETIZATION from the seaice package. None of the verification experiments is using it anymore, it's wrong, and potentially unstable. I suggest to remove the code and add a check that stops the code, if someone is still using this code, and then see what happens.
> 
> I have run this code with cs32-grids with long intergrations (order 350 years), and others have done even longer runs (also with ice around the corners), without ever noticing anything funny in the results.
> 
> Any objections?
> 
> Martin
> 
> On Oct 26, 2009, at 8:53 AM, Martin Losch wrote:
> 
>> OK, fine with me, I have enough other things on my agenda. But it would be good not to have this code around for longer than necessary.
>> 
>> Martin
>> 
>> On Oct 23, 2009, at 6:19 PM, Jean-Michel Campin wrote:
>> 
>>> Hi Martin,
>>> 
>>> Can we wait until Thanksgiving ?
>>> I have not yet done long integration with "new code"
>>> for test exp. global_ocean.cs32x15.icedyn
>>> (and would be like to test what happens when seaice
>>> extend further than face 3 & 6 and reach the corners)
>>> Thanks,
>>> Jean-Michel
>>> 
>>> On Fri, Oct 23, 2009 at 09:17:01AM +0200, Martin Losch wrote:
>>>> Hi seaice modellers,
>>>> 
>>>> while I am struggling to convince TAF,  that it should write
>>>> vectorizable code, I stumbled over this old flag:
>>>> SEAICE_OLD_AND_BAD_DISCRETIZATION
>>>> Defining this CPP-flag turns on a discretization that is not yet that
>>>> old (6months or so), but really bad. We kept this in the code to make
>>>> sure that we can recover old results (in particular for CS510 and ECCO
>>>> GODAE). I personally never want to use this code again, so I am much in
>>>> favor of removing this code (because it sometimes means that I have to
>>>> code "innovations" (in German: Verschlimmbesserungen) twice). Is there
>>>> anyone you still needs this code? Can we retire this flag? (It means
>>>> changing the seaice part of global_ocean.cs32x15)
>>>> 
>>>> Martin
>>>> 
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