Heracles Single Column Model: Difference between revisions

Create your own run directory, then modify and uncomment the first executable line of <code>scm_setup</code>, which assigns <code>ESMADIR</code> to your local GEOS-5 build that you are using for the SCM (you may already have this set as an environment variable).  Uncomment one of the lines that assign the variable <code>CASEDIR</code> to choose the experiment to run.  Then run the script from the run directory you have created.  It will copy all of the necessary resource, forcing and data files to the working directory.  Each experiment requires its own directory.  If you modify the resource files (e.g., HISTORY.rc) you may want to copy the setup directory to your own area and modify it and the setup script accordingly so that you don't clobber your modifications.

Then you can just run the model executable from the command line in the directory you created.  You will have to load the proper modules by sourcing <code>src/g5_modules</code> in the build you are using.  Although it runs with a single processor, on '''discover''' you should run it from an interactive job on a compute node (as opposed to the '''discover''' front end).  This can be done by running <code>xsub -I -l ncpus=1:mpiprocs=1,walltime=8:00:00</code>.  Once the job starts it starts an interactive shell on the job node, from which you can run the GEOS-5 executable.  Since all of the necessary configuration files are copied to the experiment directory by <code>scm_setup</code>, running the SCM requires none of the extra environmental infrastructure needed for a global experiment that the run script <code>gcm_run.j</code> creates.