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

[Min Zhu]

I think that you can reduce the file size by reducing the number of output variables either through the registry file or through run time text file README.io_config or you can compress your NetCDF file (Beginning with V3.5, the compression function in netCDF4 is supported).

Regards,

Min Zhu

-----Original Message-----
From: wrf-users-bounces at ucar.edu [mailto:wrf-users-bounces at ucar.edu] On Behalf Of Wei-keng Liao
Sent: 17 June 2014 23:29
To: wrf users group
Subject: [Wrf-users] test cases and run parameters for I/O study

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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