[MITgcm-support] pickup question

[Matthew Mazloff]

If you are running multicore the default MITgcm setup isn’t exactly reproducible due to round-off differences amplified by the intrinsic ocean chaos. So it will blow up at slightly different time-steps. 

The restart should be the exact same at the start of the run though and for at least a few timesteps. 

Matt


> On Apr 22, 2021, at 7:00 AM, 赤羽蓝 <lanchiyu12 at gmail.com> wrote:
> 
> Dear all,
> 
> I am running a regional ocean circulation model. Something strange happened. I use the pickup to restart the model after it blows up. However, the restart is not exactly the same as the previous one. I use the last pickup before the blow-up time, then restarted model can run even longer than the previous blow-up time.
> 
> By the way, I use “pickupStrictlyMatch=.TRUE.” in the data file. I mainly use the KPP, the EXF (with surface SSS and SST relaxation), and OBCS packages.
> 
> Any ideas will be grateful.
> 
> Lambert
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