**Describe the bug**

[t10-13rocket]

Describe the bug
I'm trying to run the recipe_climwip_brunner2019_med.yml recipe on JASMIN. I have the required ERA5 data downloaded and setup. However, the recipe consistently seems to get stuck after successfully executing the first task or two from the preprocessor, e.g:

2021-09-27 10:47:56,806 UTC [41063] INFO    Successfully completed task calculate_weights_climwip/rsus_STD_derive_input_rsus (priority 5) in 0:08:07.976161
2021-09-27 10:47:57,637 UTC [10218] INFO    Progress: 12 tasks running, 5 tasks waiting for ancestors, 1/18 done

That was obviously hours earlier this morning, the ESMValTool processes are still alive, but they don't appear to be doing anything. Looking at the status of the processes launched by ESMValTool on the server, using ps and top, they all have status "Sleeping"
I've tried to launch it again on a different server, and got (almost) the same behaviour, it managed to complete one more task, but still ended up stuck..
2021-09-27 14:56:25,146 UTC [273541] INFO Progress: 11 tasks running, 5 tasks waiting for ancestors, 2/18 done

I guess this is probably more a JASMIN problem than ESMValTool, but I'm at a loss where to start in trying to solve it.

Please attach

• The recipe that you are trying to run, you can find a copy in the run directory in the output directory
• The main_log_debug.txt file, this can also be found in the run directory in the output directory
  main_log_debug.txt

Originally posted by @thomascrocker in ESMValGroup/ESMValTool#2320