# Ensemble runs with ACCESS-CM2

**URL:** <https://forum.access-hive.org.au/t/ensemble-runs-with-access-cm2/1107>\
**Category:** Coupled Model\
**Tags:** help, access-cm2\
**Created:** [22 August 2023 03:31 UTC](https://forum.access-hive.org.au/t/ensemble-runs-with-access-cm2/1107 "2023-08-22T03:31:36Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![ars599](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.access-hive.org.au/ars599/32/821_2.png) [@ars599](https://forum.access-hive.org.au/u/ars599)\
**Post date:** [31 August 2023 04:20 UTC](https://forum.access-hive.org.au/t/ensemble-runs-with-access-cm2/1107/5 "2023-08-31T04:20:43Z")

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> [@zoegillett27](#):
>
> generate

Hi Zoe,

I found the topic!! Ok there are a few ways to do that and I will list in here:

1. if you can find your initial pp file, then you can try this:  
Say mine is under my atm folder under job cj368 and I want to play with the year 1965 Jan with **0.1** degree kick! :  
`/scratch/p66/ars599/archive/cj368/restart/atm module load conda/analysis3 python ~mrd599/src/python/umfile/perturbIC.py -a **0.1** -s 0 cj368a.da19650101_00`

**Then under the rose/cylc your job folder**  
`u-cr328/rose-suite.conf`  
**you can do this**  
`WARM_RESTART=true WARM_RESTART_DATE='19650101' WARM_RESTART_DIR='/scratch/p66/ars599/archive/cj368' WARM_RESTART_NRUN=true WARM_RESTART_RUNID='cj368'`

1. similar to the previous one but in more more proper way. Details in my Github and the codes are generated by @Lynn from BoM.

**Same, under the rose/cylc your job folder**  
`u-cr328/rose-suite.conf`  
`WARM_RESTART=true WARM_RESTART_DATE='19650101' WARM_RESTART_DIR='/scratch/p66/ars599/archive/cj368' WARM_RESTART_NRUN=true WARM_RESTART_RUNID='cj368'`

Now we directly modify this initial file, and restart the dump.  
the file will be in this format:

`{{WARM_RESTART_DIR}}/restart/atm/{{WARM_RESTART_RUNID}}a.da{{WARM_RESTART_DATE}}_00`

The rest of how to did it is in the Github:

> **[GitHub - ars599/Andrew\_Gunn\_2023: Python tutorial](https://github.com/ars599/Andrew_Gunn_2023)**
>
> Python tutorial. Contribute to ars599/Andrew\_Gunn\_2023 development by creating an account on GitHub.

So for your case, I guess option 1) is more convenient. Let me know if you got any issue.

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