[MITgcm-support] offline simulation

Samar Khatiwala spk at ldeo.columbia.edu
Tue Apr 17 13:47:46 EDT 2007


Hi Patrick

Shamless plug: For offline simulations, you might find my "transport  
matrix method" useful. Its implemented
as pkg/matrix. See here for details:
http://www.ldeo.columbia.edu/~spk/Papers/ 
KhatiwalaMatrixBiogeochemGBC.pdf

Samar

On Apr 17, 2007, at 1:34 PM, Patrick Rosendahl wrote:

> Hi Martin,
>
> my simulation is very expensive (20 simulated seconds in 7 real  
> days on single CPU). I am already using MPI with 3 cores which  
> leaves me 1 core to write emails on. With the variety of  
> experiments I have in mind I will be graduating some very distant  
> point of time in the future.
>
> So my idea was to extract a loop (in like 1/100s steps) and have  
> some quick offline fun.
>
> Patrick
>
> Martin Losch wrote:
>> Patrick,
>> you can restart from a pickup and still start the tracer "from rest".
>> If you pickup is at iteration n, then you'll just have to set
>> nIter0 = n, (in data)
>> and
>> PTRACERS_Iter0 = n, (in data.ptracers)
>> Martin
>> On 17 Apr 2007, at 07:26, Patrick Rosendahl wrote:
>>> Hello,
>>>
>>> I want to simulate a channel until it is in a periodic stationary  
>>> condition. Later on, I want to perform different tracer  
>>> simulations on the periodic loop of the flow. The tracer is  
>>> passive, so there is no problem there.
>>>
>>> Is this possible with MITgcm? If not, what do I need to do/change  
>>> in order to achieve this?
>>>
>>> Best regards,
>>> Patrick
>>> _______________________________________________
>>> MITgcm-support mailing list
>>> MITgcm-support at mitgcm.org
>>> http://mitgcm.org/mailman/listinfo/mitgcm-support
>> _______________________________________________
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>> http://mitgcm.org/mailman/listinfo/mitgcm-support
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