Opened 4 years ago

Closed 4 years ago

#2021 closed help (fixed)


Reported by: s1374103 Owned by: um_support
Component: UM Model Keywords: cumf
Cc: Platform: MONSooN
UM Version: 8.4



I would like to compare two dumps (same date but different model simulations).

I typed

/projects/um1/IBM/vn8.4/ibm/utils/cumf xnafaa.da19990301_00 xnafba.da19990301_00

Which outputs

Problem with CUMF program
> Summary in:                        /scratch/jakel/cumf_summ.jakel.10085
> Full output in:                    /scratch/jakel/cumf_full.jakel.10085
> Difference maps (if available) in: /scratch/jakel/cumf_diff.jakel.10085

The only file that is generated, /scratch/jakel/cumf_diff.jakel.10085, contains the following..

/projects/um1/vn8.4/ibm/exec/qxcumf: not found [No such file or directory]

I on monsoon and using version 8.4 of the UM/UKCA. Is there a problem with this tool or am I using it incorrectly?



Change History (6)

comment:1 Changed 4 years ago by willie

Hi Jamie,

Try using


I don't know why you're picking up the old IBM version.


comment:2 Changed 4 years ago by willie

  • Keywords cumf added
  • Platform set to MONSooN
  • UM Version changed from <select version> to 8.4

comment:3 Changed 4 years ago by s1374103

Hi Willie,

Thanks for that, the cumf was successful.

Do you know of any documentation on how to interpret the cumf results?

I have ran two simulations that differ only in how many tracers are being tracked (aerosol tracers) so the chemical process and dynamics should be the same.



comment:4 Changed 4 years ago by willie

Hi Jamie,

I tend to use cumf to see if a file contains NaNs by comparing the file with itself. If two files are actually different as in this case, it is less useful. It may be better to use xconv to look at individual fields.


comment:5 Changed 4 years ago by s1374103

Hi Willie,

Thanks for that.

I have no further questions, you can close the ticket now.



comment:6 Changed 4 years ago by willie

  • Resolution set to fixed
  • Status changed from new to closed
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