IN PROGRESS

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You can immediately edit the script to prepare for the second short test. In this case, we will be running for 10 days (without restart) using the 'M' (medium PE layout):

• readonly run='M_1x10_ndays'

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In addition, you may need to customize the code block below thatsome that some variables in the code block below to configure run options:

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• readonly PELAYOUT="M": 1=single processor, S=small, M=medium, L=large, X1=very large, X2=very very large. Production simulations typically use M or L. The size determines how many nodes will be used. The exact number of nodes will differ amongst machines.

• readonly WALLTIME="28:00:00" : maximum wall clock time requested for the batch jobs.

• readonly STOP_OPTION="nyears"

• readonly STOP_N="20" : units and length of each segment (i.e. each batch job)

• readonly REST_OPTION="nyears"

• readonly REST_N="5" : units and frequency for writing restart files (make sure STOP_N is a multiple of REST_N, otherwise the model will stop without writing a restart fie at the end).

• readonly RESUBMIT=”9” : number of resubmissions beyond the original segment. This simulation would run for a total of 200 years (20 + 9x20).

• readonly DO_SHORT_TERM_ARCHIVING=false : leave set to false if you want to manually run the short taerm term archive.

Since the code has already been fetched and compiled for the short tests, the toggle flags can be set to:

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Logs being compressed to .gz files is one of the last steps before the job is done and will indicate sucessful successful completion of the segment. less <log>.gz will let you directly look at a gzipped log.

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By default, E3SM will store all output files under the run/ sub-directory. For long simulations, there could 10,000s to 100,000s of output files. Having so many files in a single directory can be very impractical, slowing down simple operations like ls to a crawl. CIME includes a short-term archiving utility that will neatly organize output files into a separate archive/ sub-directory.

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Post-Processing with zppy (needs update)

To post-process a model run, do the following steps. Note that to post-process up to year n, then you must have short-term archived up to year n.

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Simulations that are deemed sufficiently valuable should be archived using zstash for long-term preservation.

Compy /

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Anvil /

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Chrysalis

Compy, anvil Anvil and chrysalis Chrysalis do not have local HPSS. We rely on NERSC HPSS for long-term archiving. Archiving requires a few separate steps:

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