[Wrf-users] test cases and run parameters for I/O study

[Saji Hameed]

Hi Wei-keng,

I think you are doing it the right way. However the I/O part is mostly the
Output in this idealized case.

If you need a more realistic example, complete with realistic input, I
could provide you one from
our operational forecasts or simulations. We try to limit the output size,
but you can change
the configuration to create huge output files.  You may also need to know
how to run the
WRF pre-processing software.

Let me know.

cheers,
saji


Saji N Hameed,
ARC-ENV, Center for Advanced Information Science and Technology,
University of Aizu, Tsuruga, Ikki-machi,
Aizuwakamatsu-shi, Fukushima 965-8580,
Japan

Tel: +81242 37-2736
Fax:+81242 37-2760
 email: saji at u-aizu.ac.jp
 url: http://enformtk.u-aizu.ac.jp
 bib: http://www.researcherid.com/rid/B-9188-2009
code: https://github.com/sajinh


On Wed, Jun 18, 2014 at 7:29 AM, Wei-keng Liao <wkliao at eecs.northwestern.edu
> wrote:

> Hi,
>
> I am studying WRF's I/O pattern and wondering if I can get some
> recommendations on choosing a test case and its run-time parameters.
> The ideal parameter setting is that can produce a large domain size
> (I/O amount) and a short run time (with 3-5 output time snapshots).
>
> I tried the test case "test/em_tropical_cyclone" and changed the
> following parameters in file namelist.input.
>  run_days                            = 0,
>  run_hours                           = 0,
>  run_minutes                         = 10,
>  history_interval                    = 5,
>  s_we                                = 1,
>  e_we                                = 401,
>  s_sn                                = 1,
>  e_sn                                = 401,
>  s_vert                              = 1,
>  e_vert                              = 121,
>
> The above settings took about 10 minutes and produced an output file
> of size 3.3GB (with 3 time snapshots). I wonder if I am on the right
> track and will very appreciated if the experts in the WRF community
> can kindly provide me additional suggestions.
>
> Wei-keng Liao
>
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> Wrf-users at ucar.edu
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>
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