Fortuna 2.5 User's Guide: Difference between revisions

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While you can set <code>PRINTSPEC</code>, submit <code>qsub gcm_run.j</code>, and get the export list as part of PBS standard output, there are quicker ways of obtaining the list. One way is to run it as a single column model on a single processor, as explained in [[Fortuna 2.5 Single Column Model]]. Another way is to run it in an existing experiment. In the <code>scratch</code> directory of an experiment that has already run, change <code>PRINTSPEC</code> in <code>CAP.rc</code> as above. Then, in the file <code>AGCM.rc</code>, change the values of <code>NX</code> and <code>NY</code> (near the beginning of the file) to 1. Then, from an interactive job (one processor will suffice), run the executable <code>GEOSgcm.x</code> in <code>scratch</code>. You will need to run <code>source src/g5_modules</code> in the model's build tree to set up the environment. The model executable will simply output the export list to <code>stdout</code>.

== Special Requirements ==

=== Perpetual ("Groundhog Day") mode ===

GEOS-5 Fortuna 2.5 and later can be run in "perpetual mode", automatically running with the same forcings for a time period delineated as a calendar year, month or day. The time period desired is set in <code>CAP.rc</code> with the parameters <code>PERPETUAL_YEAR</code>, <code>PERPETUAL_MONTH</code> and <code>PERPETUAL_DAY</code>. Set all three to run with the forcings for a particular day, and <code>NUM_SGMT</code> to how many times you wish to run it -- the history collection files will be appended with dates starting with the one in <code>cap_restart</code> and generally incrementing for the number of days in <code>NUM_SGMT</code>.

=== Saving restarts during a segment ===

=== post.rc ===

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 While you can set  <code>PRINTSPEC</code>, submit <code>qsub gcm_run.j</code>, and get the export list as part of PBS standard output, there are quicker ways of obtaining the list.  One way is to run it as a single column model on a single processor, as explained in [[Fortuna 2.5 Single Column Model]].  Another way is to run it in an existing experiment.  In the <code>scratch</code> directory of an experiment that has already run, change <code>PRINTSPEC</code> in  <code>CAP.rc</code> as above.  Then, in the file <code>AGCM.rc</code>, change the values of <code>NX</code> and <code>NY</code> (near the beginning of the file) to 1.  Then, from an interactive job (one processor will suffice), run the executable <code>GEOSgcm.x</code> in <code>scratch</code>.  You will need to run <code>source src/g5_modules</code> in the model's build tree to set up the environment.  The model executable will simply output the export list to <code>stdout</code>.
+== Special Requirements ==
+=== Perpetual ("Groundhog Day") mode  ===
+GEOS-5 Fortuna 2.5 and later can be run in "perpetual mode", automatically running with the same forcings for a time period delineated as a calendar year, month or day.  The time period desired is set in <code>CAP.rc</code> with the parameters <code>PERPETUAL_YEAR</code>, <code>PERPETUAL_MONTH</code> and <code>PERPETUAL_DAY</code>.  Set all three to run with the forcings for a particular day, and <code>NUM_SGMT</code> to how many times you wish to run it -- the history collection files will be appended with dates starting with the one in <code>cap_restart</code> and generally incrementing for the number of days in <code>NUM_SGMT</code>.
+=== Saving restarts during a segment ===
+=== post.rc ===