UM rose-stem "rose_ana" task not working? (fails to load mule_cumf)

[MichaelWhitall]

Hi all,

I have some UM workflow which run some "development tests" on the side, to check bit-comparison on different processor decompositions etc, e.g. https://code.metoffice.gov.uk/trac/roses-u/browser/d/w/8/7/9/trunk.
The development tests in these workflows have recently stopped working. The "rose_ana" tasks which compare whether two runs gave the same output as expected fail, unable to load mule_cumf. Example error message here:
https://cylchub/services/cylc-review/view/michael.whitall?&suite=u-dw879%2Frun1&no_fuzzy_time=0&path=log/job/20240110T0000Z/rose_ana_nostash/01/job.err

When I initially upgraded these workflows to UM vn14.0 and made the changes to use git sources, the rose_ana tasks were working fine (e.g. see this one https://cylchub/services/cylc-review/taskjobs/michael.whitall/?suite=u-dw869%2Frun1), so this presumably isn't a git sources thing?

I've checked and I actually get the same error in the rose_ana tasks if I try and run the UM vn13.9 rose-stem, but the vn14.1 rose-stem works OK.

Has there been some recent change (e.g. to software stack?) that means I need to make changes to my rose_ana apps to make them work again?

Cheers!
Mike

[Mohit Dalvi (mcdalvi)]

Hi,
In my similar stand alone UM testing set up that works at UM14.1, the rose_ana/ MULE_RESOURCE pre-script contains:

module load scitools/production-os47-1
module load um_tools/2025.10.1/no-openmp

Mohit

[MichaelWhitall]

Awesome thanks Mohit, yes adding those module load statements in my workflow seems to've fixed the rose_ana tasks, that's fantastic :)