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> cd components/clm
> git fetch origin
> git checkout release-cesm2.2.01/hist_opt

Note, the pe-layout of existing compsets in the new code base of CESM2 for derecho (cesm2.2.2) has not been adjusted to the new computer, and running out of the box can lead to large differences in computer costs compared to running on cheyenne. 

New PE-layouts are still being developed. We are working on updating these compsets. One way to increase performance is to use a namelist setting. To improve improve the performance of derecho, you can add the following to your user_nl_cam file.

phys_loadbalance = 1

If you want to run a regional refined model simulation on derecho, you may use the following sandbox that will in order to provide the same performance on derecho as it did on cheyenne:

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New PE-layouts are still being developed. We are working on updating these compsets. One way to increase performance is to use a namelist setting. To improve improve the performance of derecho, you can add the following to your user_nl_cam file.

phys_loadbalance = 1

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