Postproc_atmos failure: IndexError

Unified Model
1

Hi, I am running the suite called ‘fixed’ (a copy of u-dc838). It has ran the first 5 years but has failed on the atmosphere post-processing step of the 1st year with an IndexError as part of create_um_mean function in atmos_transform.py.

Traceback (most recent call last):
  File "/work/n02/n02/earbsn/cylc-run/fixed/share/fcm_make_pp/build/bin/main_pp.py", line 119, in <module>
    main()
  File "/work/n02/n02/earbsn/cylc-run/fixed/share/fcm_make_pp/build/bin/main_pp.py", line 112, in main
    run_postproc()
  File "/work/n02/n02/earbsn/cylc-run/fixed/share/fcm_make_pp/build/bin/main_pp.py", line 83, in run_postproc
    getattr(model, meth)()
  File "/mnt/lustre/a2fs-work2/work/n02/n02/earbsn/cylc-run/fixed/share/fcm_make_pp/build/bin/timer.py", line 115, in wrapper
    out = function(*args, **kw)
  File "/mnt/lustre/a2fs-work2/work/n02/n02/earbsn/cylc-run/fixed/share/fcm_make_pp/build/bin/atmos.py", line 491, in do_meaning
    icode = self.update_meanfile(meanfile, setend)
  File "/mnt/lustre/a2fs-work2/work/n02/n02/earbsn/cylc-run/fixed/share/fcm_make_pp/build/bin/timer.py", line 115, in wrapper
    out = function(*args, **kw)
  File "/mnt/lustre/a2fs-work2/work/n02/n02/earbsn/cylc-run/fixed/share/fcm_make_pp/build/bin/atmos.py", line 445, in update_meanfile
    rcode = climatemean.create_mean(meanfile,
  File "/mnt/lustre/a2fs-work2/work/n02/n02/earbsn/cylc-run/fixed/share/fcm_make_pp/build/bin/timer.py", line 115, in wrapper
    out = function(*args, **kw)
  File "/mnt/lustre/a2fs-work2/work/n02/n02/earbsn/cylc-run/fixed/share/fcm_make_pp/build/bin/climatemean.py", line 256, in create_mean
    icode, output = target_app(meanfile, **kwargs)
  File "/mnt/lustre/a2fs-work2/work/n02/n02/earbsn/cylc-run/fixed/share/fcm_make_pp/build/bin/timer.py", line 115, in wrapper
    out = function(*args, **kw)
  File "/mnt/lustre/a2fs-work2/work/n02/n02/earbsn/cylc-run/fixed/share/fcm_make_pp/build/bin/atmos_transform.py", line 323, in create_um_mean
    ','.join([str(i) for i in ff_out.fields[0].raw[1:7]]),
IndexError: list index out of range
[FAIL] main_pp.py atmos <<'__STDIN__'

I then put some print statements in create_um_mean to look at ff_out.fields, where the IndexError is coming from and looked at job.out and it returned this:

[INFO]  ATMOS SHARE directory: /work/n02/n02/earbsn/cylc-run/fixed/share/data/History_Data
[INFO]  ATMOS WORK directory: /work/n02/n02/earbsn/cylc-run/fixed/work/22770101T0000Z/coupled
[INFO]  Running do_meaning for atmos...
[INFO]  Creating meanfile fixeda.ps2277jja with components:
	/work/n02/n02/earbsn/cylc-run/fixed/share/data/History_Data/fixeda.pm2277aug
	/work/n02/n02/earbsn/cylc-run/fixed/share/data/History_Data/fixeda.pm2277jul
	/work/n02/n02/earbsn/cylc-run/fixed/share/data/History_Data/fixeda.pm2277jun
[INFO]  Meanfile validity date: 2277,9,1,0 day number 241
<FieldsFile: integer_constants=(46,), real_constants=(38,), level_dependent_constants=(86, 8)>
[]

so this list is empty, but I’m not sure why that would be the case. I’m not sure how to move forward from here, so any help is appreciated. Thank you!

3

Hi Brooke,

What are the differences between your suite “fixed” and the original u-dc838? I am a bit confused by what “fixed” actually is. It appears to be a branch of Helen’s suite u-ds156 but it’s description says a copy of u-dc838?? The postproc_atmos task runs fine in the suite u-dc838. So it’s definitely something to do with changes that have been made subsequently.

Cheers,
Ros

4

Hi Ros, thanks for your help. One of the differences was calculating seasonal means, which is the part it was getting stuck on, so I just changed that to false.