[Wrf-users] memory space for long simulations
afwande juliet
afwandej965 at gmail.com
Thu Nov 12 11:03:17 MST 2015
thanks
but I thougth netcdf3.6 version should by default have file large support.
Real.exe is already running I don't how to handle this for wrf.exe
Afwande
On Thu, Nov 12, 2015 at 8:10 AM, Don Morton <don.morton at borealscicomp.com>
wrote:
> Hello,
>
> I'm guessing that you could compile with WRFIO_NCD_LARGE_FILE_SUPPORT and
> get around the restriction. Please see Q17 in the following:
>
> http://www2.mmm.ucar.edu/wrf/users/FAQ_files/FAQ_wrf_runtime.html
>
>
> You might also need to make sure your NetCDF is compiled for large memory
> support (it might be by default, but I can't remember for sure).
>
> ---
> Don Morton, Owner/Manager
> Boreal Scientific Computing LLC
> Fairbanks, Alaska USA
> http://www.borealscicomp.com/
> http://www.borealscicomp.com/Miscellaneous/MortonBio/
>
> On Thu, Nov 12, 2015 at 10:55 AM, afwande juliet <afwandej965 at gmail.com>
> wrote:
>
>> Hi all users
>>
>> How do users go about this issue of frames_per_outfile? I am doing 5years
>> simulations for 3 different cases. The interval_seconds =21600(6hours).
>> That means each case there will be 7300files*3=22000files(total files).
>> I read somewhere that max space for frames_per_outputfile=2GB. I guess if
>> the 5years run is complete the total disk space will be 20T which the
>> cluster am using has .
>> I don't want to have many files; If possible all files in one big file
>> BUT I am afraid doing this will make model stop giving output due to
>> insufficient memory.
>>
>> Can someone help me how to go about this!!
>>
>>
>> &time_control
>> !run_days = 0,
>> !run_hours = 96,
>> !run_minutes = 0,
>> !run_seconds = 0,
>> start_year = 1997,
>> start_month = 02,
>> start_day = 01,
>> start_hour = 00,
>> start_minute = 00,
>> start_second = 00,
>> end_year = 2006,
>> end_month = 12,
>> end_day = 31,
>> end_hour = 00,
>> end_minute = 00,
>> end_second = 00
>> interval_seconds = 21600
>> input_from_file = .false.,
>> history_interval = 180,
>> frames_per_outfile = 100,
>> restart = .false.,
>> restart_interval = 1440,
>> io_form_history = 2
>> io_form_restart = 2
>> io_form_input = 2
>> io_form_boundary = 2
>> debug_level = 100
>> auxinput4_inname = "wrflowinp_d<domain>"
>> auxinput4_interval = 360,
>> io_form_auxinput4 = 2,
>> /
>> &domains
>> time_step = 200,
>> time_step_fract_num = 0,
>> time_step_fract_den = 1,
>> max_dom = 1,
>> e_we = 250,
>> e_sn = 150,
>> e_vert = 51,
>> p_top_requested = 5000,
>> num_metgrid_levels = 38,
>> num_metgrid_soil_levels = 4,
>> dx = 36000, 12000, 3333.33,
>> dy = 36000, 12000, 3333.33,
>> grid_id = 1,
>> parent_id = 0,
>> i_parent_start = 1,
>> j_parent_start = 1,
>> parent_grid_ratio = 1,
>> parent_time_step_ratio = 1,
>> feedback = 1,
>> smooth_option = 0,
>> /
>> &physics
>> mp_physics = 6,
>> ra_lw_physics = 4,
>> ra_sw_physics = 4,
>> radt = 30,
>> sf_sfclay_physics = 1,
>> sf_surface_physics = 2,
>> bl_pbl_physics = 1,
>> bldt = 0,
>> cu_physics = 1,
>> cudt = 5,
>> kfeta_trigger = 1,
>> cu_rad_feedback = .true.,
>> isfflx = 1,
>> sst_update = 1,
>> tmn_update = 1,
>> sst_skin = 1,
>> bucket_mm = 100.0,
>> bucket_J = 1.e9,
>> ifsnow = 1,
>> icloud = 1,
>> surface_input_source = 1,
>> num_soil_layers = 4,
>> sf_urban_physics = 0,
>> /
>> &fdda
>> grid_fdda = 2,
>> gfdda_inname = "wrffdda_d<domain>",
>> gfdda_interval_m = 360,
>> gfdda_end_h = 52560,
>> io_form_gfdda = 2,
>> fgdt = 0,
>> if_no_pbl_nudging_uv = 1,
>> if_no_pbl_nudging_t = 1,
>> if_no_pbl_nudging_q = 1,
>> if_no_pbl_nudging_ph = 1,
>> if_zfac_uv = 1,
>> k_zfac_uv = 18,
>> if_zfac_t = 1,
>> k_zfac_t = 18,
>> if_zfac_q = 1,
>> k_zfac_q = 18,
>> if_zfac_ph = 1,
>> k_zfac_ph = 18,
>> guv = 0.0003,
>> gt = 0.0003,
>> gq = 0.0003,
>> gph = 0.0003,
>> xwavenum = 9,
>> ywavenum = 5,
>> if_ramping = 0,
>> dtramp_min = 60.0,
>> /
>> &dynamics
>> w_damping = 1,
>> diff_opt = 1, 1, 1,
>> km_opt = 4, 4, 4,
>> diff_6th_opt = 0, 0, 0,
>> diff_6th_factor = 0.12, 0.12, 0.12,
>> base_temp = 290.
>> damp_opt = 3,
>> zdamp = 5000., 5000., 5000.,
>> dampcoef = 0.2, 0.2, 0.2
>> khdif = 0, 0, 0,
>> kvdif = 0, 0, 0,
>> non_hydrostatic = .true., .true., .true.,
>> moist_adv_opt = 1, 1, 1,
>> scalar_adv_opt = 1, 1, 1,
>> /
>> &bdy_control
>> spec_bdy_width = 10,
>> spec_zone = 1,
>> relax_zone = 9,
>> specified = .true., .false.,.false.,
>> nested = .false., .true., .true.,
>> spec_exp = 0.33,
>> /
>> &grib2
>> /
>> &namelist_quilt
>> nio_tasks_per_group = 0,
>> nio_groups = 1,
>> /
>>
>>
>>
>> Thanks afwande
>>
>> 1
>>
>>
>> _______________________________________________
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>> Wrf-users at ucar.edu
>> http://mailman.ucar.edu/mailman/listinfo/wrf-users
>>
>>
>
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