Downloading CESM

Overview

Teaching: 0 min
Exercises: 0 min

Questions

• How do I download CESM?

Objectives

We will now download the model and all the setup files needed for it. These are one-time steps.

Go to your /glade/work/ directory

$ cd /glade/work/cstan

Download the CESM from Github

$ git clone -b release-cesm2.1.5 https://github.com/ESCOMP/cesm.git cesm2.1.5 

Change to the cesm2.1.5 directory

$ cd cesm2.1.5

Let’s take a look in that directory and talk about what is there and what is not. Need to get the model components.

Checkout all the model components

$ ./manage_externals/checkout_externals

Sometimes this hangs and gives an error about connecting. If it does, try again. If it asks you a question about the certificate, you can select p for permanent.

Warning

If a problem was encountered during checkout_externals, which may happen with an older version of the svn client software, it may appear to have downloaded successfully, but in fact only a partial checkout has occurred.

To confirm a successful download of all components, you can run checkout_externals with the status flag to show the status of the externals:

./manage_externals/checkout_externals -S

This should show a clean status for all externals, with no characters in the first two columns of output, as in this example:

Processing externals description file : Externals.cfg
Processing externals description file : Externals_CLM.cfg
Processing externals description file : Externals_POP.cfg
Processing externals description file : Externals_CISM.cfg
Checking status of externals: clm, fates, ptclm, mosart, ww3, cime, cice, pop, cvmix, marbl, cism, source_cism, rtm, cam,
    ./cime
    ./components/cam
    ./components/cice
    ./components/cism
    ./components/cism/source_cism
    ./components/clm
    ./components/clm/src/fates
    ./components/clm/tools/PTCLM
    ./components/mosart
    ./components/pop
    ./components/pop/externals/CVMix
    ./components/pop/externals/MARBL
    ./components/rtm
    ./components/ww3

Leave this running over break.

Key Points