Opened 3 days ago

#2879 new help

"Negative mass in set_thermodynamic" error

Reported by: charlie Owned by: um_support
Component: UM Model Keywords:
Cc: Platform: NEXCS
UM Version: 10.7



Sorry to bother you, but I have an error in one of my runs (2 of them actually, u-bh301 and u-bh604, which are identical apart from speed/number of processes). The error is as follows:

???!!!???!!!???!!!???!!!???!!! ERROR ???!!!???!!!???!!!???!!!???!!!
? Error code: 100
? Error from routine: set_thermodynamic
? Error message: A total of 1 points had negative mass in set_thermodynamic. This indicates the pressure fields are inconsistent between different levels and the model is about to fail.
? Error from processor: 263
? Error number: 13

I have found this error on the website of known failure points, and have tried following the first instruction i.e. just to retrigger the coupled, in case it was a hardware problem. Unfortunately, however, this appears optimistic, because the same error occurred again, roughly 3.5 hours through the task.

Please can you advise what this means? The instructions on the website say that if it fails again, to try restarting from an earlier restart dump in case one of them has become corrupted. I haven't done this yet, but surely if this was the problem, I would expect the failure to happen on the first timestep of the re-run, not 3.5 hours into it.

Many thanks,


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