CKO



Restart data

With the CSM climate model it is possible to make so called "restart-files". With these files it is possible to restart the simulation at any particular timestep. An exact reproduction of the simulation starting from such a restart is possible. These restartfiles are crucial for our experiment because in case of a crash of the "TERAS" supercomputer we do not have to start all over again, but we can continue the simulation starting from the most recent restartfile. Perhaps even more important; it is possible to analyse extreme events such as a superstorm by rerunning the model during the period of the event and outputting much more diagnostics relevant for the event.

Storage costs

96 MB per restart.

Every month :
12 (# months per year)
140 x (# years)
50 x (# members)
96 x
-----
8 Tbytes !!!

This will take too much space on the Teras. We decided to write restartfiles every year
which will take 672 Gbytes.


Michael Kliphuis
Last modified: Tue May 13 12:03:01 CEDT 2003



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