#2980 closed help (fixed)

Set up the directory for UM model output

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


Dear CMS helpdesk,

I am now running a simulation with UM but I have a problem in setting up the directory for model output. In my suite, the default path for output is controlled by $DATAM. This is set up in the suite.rc profile. It is further controlled by

DATAM = $CYLC_SUITE_SHARE_DIR/data/{{DATAM}}/{{resnname?}}

But I can’t find where $CYLC_SUITE_SHARE_DIR is set up. It seems it’s hard coded somewhere but I don't know how to change it. Please could someone help me with this?

My suite ID is u-bl384 and I am using Metoffice HPC for simulation. Thank you very much!

Change History (7)

comment:1 Changed 11 months ago by dcase

This is an environment variable which will be used by Cylc. It will resolve to be something like ~/cylc-run/<suite name>/share .

Do you mind if I ask why you wish to change it? I can maybe give advice then.


comment:2 Changed 11 months ago by jfgu

Hi Dave,

Thanks. As you said, this env variable is something like ~/cylc-run/<suite name>/share. I found this after I ran the suite. The problem for me is that it directs to my home directory, where I do not have enough space. Therefore, I want to change the default output directory on my nexcs-n06 space. My directory on nexcs-n06 is /projects/nexcs-n06/jifgu. Can you help me to change the default output directory?


comment:3 Changed 11 months ago by dcase

You can edit the rose-suite.conf file to have


and then the link should resolve here. If it doesn't work then let me know the suite name.


comment:4 Changed 11 months ago by jfgu

Hi Dave,

It has some problem to start running the suite with the new lines added in rose-suite.conf. Something related with the new lines.

My suite ID is u-bl384. Thanks!


comment:5 Changed 11 months ago by dcase

You should put those lines at the top of the file, above the [jinja2:suite.rc] bit

We will get this running by the weekend!

comment:6 Changed 11 months ago by jfgu

Great thanks, Dave. It works now.


comment:7 Changed 11 months ago by dcase

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

Nice. I'll shut the ticket, but feel free to reopen it if you get problems further down the line.

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