Helping new users run ACCESS-OM2 from an existing control run

Hi @rmholmes, mike (not on the forum?) and @adele-morrison

Thanks for highlighting. I agree it would be helpful to add restart instructions onto the hive docs – it is an ongoing challenge keeping multiple doc’s up to date – I’m cc’ing @atteggiani to hopefully help us with the hive docs side / add a link.

@anton gave a discussion on this at last week’s COSIMA meeting (I don’t know if you were able to make it?). His notes and slides are here. Specifically see slide 12:

payu clone –-new-branch <new-branch> --restart <folder_path> <URL> <my-folder>

e.g.:

payu clone --new-branch my_iaf_extension --restart /g/data/ik11/outputs/accessom2/1deg_era5_iaf/restart040 https://github.com/COSIMA/1deg_era5_iaf my_iaf_experiment

So this is the new preferred way of operating afaik. Regarding updating the wiki, @rmholmes – I think you mean this step?

copy (or link) the required restart and output directories from the previous experiment (say, restart123 and output123) into the newly created archive directory (you will need the output directory due to this bug Restarting access-om2 requires outputNNN/ice/cice_in.nml · Issue #193 · payu-org/payu · GitHub)

Correct? @aekiss, would you like to update that? (I suppose this bug got fixed?)

Please mention to Mike that we’re running a session on
“How to run an ACCESS-OM2 model” on 21/03/2025. Feedback on topics we should cover are welcome.

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