[MITgcm-support] Stopping execution when NaNs are generated?

Martin Losch mlosch at awi-bremerhaven.de
Thu Apr 20 05:52:24 EDT 2006

has anyone answer you yet?
The CLF criterion is evaluated along with the monitor statistics. But  
in fact, the model is stopped if the monitor statistics encounter  
unrealistic temperature valures (something like +/- 1e4). So if you  
decrease your monitorFreq, the model will catch the problems before  
the large numbers have turned into nans (at the cost of very frequent  
monitor statistics).

On Apr 14, 2006, at 10:02 PM, Jody Klymak wrote:

> Hi All,
> Just getting started with MITgcm - I have some simple 2-D runs  
> going on a parallel Linux cluster here at UCSD.
> Is there a flag to set that will stop execution when the model run  
> hits the CFL criterion and starts to generate NaNs?  Or should I  
> just decrease (increase?) monitorFreq?  Rookie mistake, but I just  
> burnt up 5h of grid time running the model on NaNs.
> Thanks a lot,  Jody
> --
> Jody Klymak
> http://opg1.ucsd.edu/~jklymak/
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