[MITgcm-support] problem running tutorial_global_oce_latlon

[Jean-Michel Campin]

Hi Samar,

I don't think that there is something obviously wrong in this tutorial.
PTRACERS_advScheme=33 requires Olx,Oly greater or equal to 2
(except for the cube, where it needs to be 2 times larger, or with
other combinations of params such as GMadvectiveForm+Visbeck --> +1 ).
here we generally don't use mpich2 (after Chris's advise)
but don't know if this could be the cause of our problem.
Cheers,
Jean-Michel

On Tue, Sep 16, 2008 at 04:31:35PM +0200, Martin Losch wrote:
> Just a wild guess, but (from data.ptracers)
>  PTRACERS_advScheme=33,
> requires an overlap of 3, right? The default in  
> tutorial_gobal_oce_latlon is Olx=2 (not 3). I am not sure if that is  
> checked and caught anywhere.
>
> Martin
>
> On 16 Sep 2008, at 16:00, Samar Khatiwala wrote:
>
>> Hi Jean-Michel
>>
>> I tried a lower optimization, but that did not fix the problem.
>>
>> What worked however is increasing OLx and OLy from 3 to 4. Now the  
>> model runs fine.
>>
>> More puzzling still is that the model runs fine with the original OLx 
>> and OLy on a Mac with ifort+gcc.
>> Both the Linux box and Mac have the same version of ifort (10.1).
>>
>> Any ideas what might be going on?
>>
>> Thanks, Samar
>>
>> On Sep 15, 2008, at 4:12 PM, Jean-Michel Campin wrote:
>>
>>> Hi samar,
>>>
>>> Which compiler options or optfile are you using ?
>>> Did you try with lower optimisation ?
>>>
>>> Jean-Michel
>>>
>>> On Mon, Sep 15, 2008 at 01:02:27PM -0400, Samar Khatiwala wrote:
>>>> Hi,
>>>>
>>>> I'm having problems with verification/tutorial_global_oce_latlon.  
>>>> The
>>>> model blows up (NaN's) within a
>>>> couple of time steps. I played around a bit with time steps (which
>>>> didn't help). Before I dig further I just
>>>> wanted to ask if anyone else has run into this problem.
>>>>
>>>> I am running this on a Linux Xeon box with ifort, gcc, and mpich2. I
>>>> don't have a problem running other
>>>> code.
>>>>
>>>> Thanks
>>>>
>>>> Samar
>>>>
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