[Wrf-users] Re: Wrf-users Digest, Vol 53, Issue 14
wrfhelp
wrfhelp at ucar.edu
Wed Jan 21 14:17:28 MST 2009
Please try setting
grid_id = 1,2,3,
parent_id = 0,1,1,
and see if it works better. For both your 1.333 km domains, the parent
domain should be the 4 km domain with domain ID 1.
wrfhelp
On Jan 21, 2009, at 2:05 PM, wrf-users-request at ucar.edu wrote:
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> Today's Topics:
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> 1. Long execution time with nested grids in ARW core (mmacleod)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 21 Jan 2009 13:26:30 +0000
> From: mmacleod <mmacleod at scotiaweather.com>
> Subject: [Wrf-users] Long execution time with nested grids in ARW core
> To: wrf-users at ucar.edu
> Message-ID: <49772286.5020406 at scotiaweather.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Good morning Folks.
>
> We have testing the WRF over eastern Canada and have discovered some
> disturbing things about run times.
>
> We are investigating the idea of running a 4 km grid over the entire
> region driven by the 12km NAM 3 hourly fields and running 2 1.33 km
> grids (non overlapping) over two separate areas. We have executed
> this concept using the ARW core (the NMM core will not run it - get
> Mountains Too High error that we can't overcome). We find that if we
> execute the 4 km grid alone that it runs well and is reasonably fast
> on
> a dual quad 3.0 GHz machine. A 10 minute run executes in about 45
> seconds. However once we add the nested grids the time suddenly runs
> long. Once the nested grids are executed, the 3 second clock time to
> run the 4 km grid becomes nearly 400 seconds by the end of 10
> minutes of
> forecast time.
>
> We need to discover why this is so. If we run the 4 km the use
> ndown to
> convert to 1.33 km then run the times are fast but in combination they
> are unusable.
>
> I am attaching the namelist.wps, namelist,input, projection.jpg and
> the
> file WRFRUN2.LOG that is the piped output from the model. Any hepl on
> this will be greatly appreciated.
>
> Sincerely
>
> Mac MacLeod
> --
>
> M.A. (Mac) MacLeod
> President and General Manager
> Scotia Weather Services Inc
> 192 Wyse Road, Suite 8,
> Dartmouth, N.S. B3A 1M9
>
> Tele: 902-468-3866
> Fax: 902-461-1768
> E-mail: mmacleod at scotiaweather.com
> Visit us: www.scotiaweather.com
>
> -------------- next part --------------
> Namelist dfi_control not found in namelist.input. Using registry
> defaults for variables in dfi_control
> WRF V3.0.1.1 MODEL
> *************************************
> Parent domain
> ids,ide,jds,jde 1 168 1 136
> ims,ime,jms,jme -4 173 -4 141
> ips,ipe,jps,jpe 1 168 1 136
> *************************************
> DYNAMICS OPTION: Eulerian Mass Coordinate
> med_initialdata_input: calling input_model_input
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 33 CATEGORIES 2
> SEASONS WATER CATEGORY = 16 SNOW CATEGORY = 24
> INITIALIZE THREE Noah LSM RELATED TABLES
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 27 CATEGORIES
> INPUT SOIL TEXTURE CLASSIFICAION = STAS
> SOIL TEXTURE CLASSIFICATION = STAS FOUND 19 CATEGORIES
> STEPRA,STEPCU,STEPBL 25 13 1
> *************************************
> Nesting domain
> ids,ide,jds,jde 1 91 1 61
> ims,ime,jms,jme -4 96 -4 66
> ips,ipe,jps,jpe 1 91 1 61
> INTERMEDIATE domain
> ids,ide,jds,jde 94 129 68 93
> ims,ime,jms,jme 89 134 63 98
> ips,ipe,jps,jpe 92 131 66 95
> *************************************
> d01 2008-12-10_12:00:00 *** Initializing nest domain # 2 from an
> input file. ***
> d01 2008-12-10_12:00:00 med_initialdata_input: calling
> input_model_input
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 33 CATEGORIES 2
> SEASONS WATER CATEGORY = 16 SNOW CATEGORY = 24
> INITIALIZE THREE Noah LSM RELATED TABLES
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 27 CATEGORIES
> INPUT SOIL TEXTURE CLASSIFICAION = STAS
> SOIL TEXTURE CLASSIFICATION = STAS FOUND 19 CATEGORIES
> STEPRA,STEPCU,STEPBL 75 38 1
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 33 CATEGORIES 2
> SEASONS WATER CATEGORY = 16 SNOW CATEGORY = 24
> INITIALIZE THREE Noah LSM RELATED TABLES
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 27 CATEGORIES
> INPUT SOIL TEXTURE CLASSIFICAION = STAS
> SOIL TEXTURE CLASSIFICATION = STAS FOUND 19 CATEGORIES
> STEPRA,STEPCU,STEPBL 75 38 1
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 33 CATEGORIES 2
> SEASONS WATER CATEGORY = 16 SNOW CATEGORY = 24
> INITIALIZE THREE Noah LSM RELATED TABLES
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 27 CATEGORIES
> INPUT SOIL TEXTURE CLASSIFICAION = STAS
> SOIL TEXTURE CLASSIFICATION = STAS FOUND 19 CATEGORIES
> STEPRA,STEPCU,STEPBL 25 13 1
> Timing for Writing wrfout_d01_2008-12-10_12:00:00 for domain
> 1: 2.02600 elapsed seconds.
> Timing for processing lateral boundary for domain 1:
> 0.02700 elapsed seconds.
> WRF NUMBER OF TILES FROM OMP_GET_MAX_THREADS = 8
> WRF NUMBER OF TILES = 8
> *************************************
> Nesting domain
> ids,ide,jds,jde 1 151 1 85
> ims,ime,jms,jme -4 156 -4 90
> ips,ipe,jps,jpe 1 151 1 85
> INTERMEDIATE domain
> ids,ide,jds,jde 48 103 26 59
> ims,ime,jms,jme 43 108 21 64
> ips,ipe,jps,jpe 46 105 24 61
> *************************************
> d02 2008-12-10_12:00:00 *** Initializing nest domain # 3 from an
> input file. ***
> d02 2008-12-10_12:00:00 med_initialdata_input: calling
> input_model_input
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 33 CATEGORIES 2
> SEASONS WATER CATEGORY = 16 SNOW CATEGORY = 24
> INITIALIZE THREE Noah LSM RELATED TABLES
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 27 CATEGORIES
> INPUT SOIL TEXTURE CLASSIFICAION = STAS
> SOIL TEXTURE CLASSIFICATION = STAS FOUND 19 CATEGORIES
> STEPRA,STEPCU,STEPBL 225 113 1
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 33 CATEGORIES 2
> SEASONS WATER CATEGORY = 16 SNOW CATEGORY = 24
> INITIALIZE THREE Noah LSM RELATED TABLES
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 27 CATEGORIES
> INPUT SOIL TEXTURE CLASSIFICAION = STAS
> SOIL TEXTURE CLASSIFICATION = STAS FOUND 19 CATEGORIES
> STEPRA,STEPCU,STEPBL 225 113 1
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 33 CATEGORIES 2
> SEASONS WATER CATEGORY = 16 SNOW CATEGORY = 24
> INITIALIZE THREE Noah LSM RELATED TABLES
> INPUT LANDUSE = USGS
> LANDUSE TYPE = USGS FOUND 27 CATEGORIES
> INPUT SOIL TEXTURE CLASSIFICAION = STAS
> SOIL TEXTURE CLASSIFICATION = STAS FOUND 19 CATEGORIES
> STEPRA,STEPCU,STEPBL 75 38 1
> Timing for Writing wrfout_d02_2008-12-10_12:00:00 for domain
> 2: 0.18700 elapsed seconds.
> WRF NUMBER OF TILES FROM OMP_GET_MAX_THREADS = 8
> WRF NUMBER OF TILES = 8
> Timing for Writing wrfout_d03_2008-12-10_12:00:00 for domain
> 3: 0.28600 elapsed seconds.
> WRF NUMBER OF TILES FROM OMP_GET_MAX_THREADS = 8
> WRF NUMBER OF TILES = 8
> Timing for main: time 2008-12-10_12:00:02 on domain 3: 1.47700
> elapsed seconds.
> Timing for main: time 2008-12-10_12:00:05 on domain 3: 0.80500
> elapsed seconds.
> Timing for main: time 2008-12-10_12:00:08 on domain 3: 0.80700
> elapsed seconds.
> Timing for main: time 2008-12-10_12:00:08 on domain 2: 7.22300
> elapsed seconds.
> Timing for main: time 2008-12-10_12:00:10 on domain 3: 0.81100
> elapsed seconds.
> Timing for main: time 2008-12-10_12:00:13 on domain 3: 0.80900
> elapsed seconds.
> Timing for main: time 2008-12-10_12:00:16 on domain 3: 0.80600
> elapsed seconds.
> Timing for main: time 2008-12-10_12:00:16 on domain 2: 3.11600
> elapsed seconds.
> d03 2008-12-10_12:00:16 1 points exceeded cfl=2 in
> domain d03 at time 2008-12-10_12:00:16 hours
> d03 2008-12-10_12:00:16 MAX AT i,j,k: 149
> 83 34 vert_cfl,w,d(eta)= 2.192428 159.2094
> 9.6851895E-03
> Timing for main: time 2008-12-10_12:00:18 on domain 3: 0.81100
> elapsed seconds.
> d03 2008-12-10_12:00:18+02/03 47 points exceeded cfl=2 in
> domain d03 at time 2008-12-10_12:00:18+02/03 hours
> d03 2008-12-10_12:00:18+02/03 MAX AT i,j,k: 149
> 83 34 vert_cfl,w,d(eta)= 24.04470 2711.260
> 9.6851895E-03
> Timing for main: time 2008-12-10_12:00:21 on domain 3: 0.80800
> elapsed seconds.
> d03 2008-12-10_12:00:21+01/03 232 points exceeded cfl=2 in
> domain d03 at time 2008-12-10_12:00:21+01/03 hours
> d03 2008-12-10_12:00:21+01/03 MAX AT i,j,k: 148
> 83 33 vert_cfl,w,d(eta)= 165.1756 3203.720
> 1.0798805E-02
> Timing for main: time 2008-12-10_12:00:24 on domain 3: 1.47100
> elapsed seconds.
> Timing for main: time 2008-12-10_12:00:24 on domain 2: 3.78500
> elapsed seconds.
> Timing for main: time 2008-12-10_12:00:24 on domain 1: 20.53100
> elapsed seconds.
>
>
> Timing for main: time 2008-12-10_12:09:52 on domain 3: 29.98500
> elapsed seconds.
> Timing for main: time 2008-12-10_12:09:52 on domain 2: 108.54400
> elapsed seconds.
> Timing for main: time 2008-12-10_12:09:54 on domain 3: 29.98600
> elapsed seconds.
> Timing for main: time 2008-12-10_12:09:57 on domain 3: 29.98000
> elapsed seconds.
> Timing for main: time 2008-12-10_12:10:00 on domain 3: 29.97800
> elapsed seconds.
> Timing for main: time 2008-12-10_12:10:00 on domain 2: 108.29200
> elapsed seconds.
> Timing for main: time 2008-12-10_12:10:00 on domain 1: 380.85800
> elapsed seconds.
> d01 2008-12-10_12:10:00 wrf: SUCCESS COMPLETE WRF
> -------------- next part --------------
> &time_control
> run_days = 0,
> run_hours = 1,
> run_minutes = 0,
> run_seconds = 0,
> start_year = 2008, 2008, 2008,
> start_month = 12, 12, 12,
> start_day = 10, 10, 10,
> start_hour = 12, 12, 12,
> start_minute = 00, 00, 00,
> start_second = 00, 00, 00,
> end_year = 2008, 2008, 2008,
> end_month = 12, 12, 12,
> end_day = 10, 10, 10,
> end_hour = 15, 15, 15,
> end_minute = 00, 00, 00,
> end_second = 00, 00, 00,
> interval_seconds = 10800
> input_from_file = .true.,.true.,.true.,
> history_interval = 60, 60, 60,
> frames_per_outfile = 1, 1, 1,
> restart = .false.,
> restart_interval = 5000,
> io_form_history = 2
> io_form_restart = 2
> io_form_input = 2
> io_form_boundary = 2
> debug_level = 0
> /
>
> &domains
> time_step = 24,
> time_step_fract_num = 0,
> time_step_fract_den = 1,
> max_dom = 3,
> s_we = 1,1,1,
> e_we = 168,91,151,
> s_sn = 1,1,1,
> e_sn = 136,61,85,
> s_vert = 1, 1, 1,
> e_vert = 35, 35, 35,
> num_metgrid_levels = 40
> dx = 4000,1333.333,1333.333,
> dy = 4000,1333.333,1333.333,
> p_top_requested = 5000,
> grid_id = 1,2,3,
> parent_id = 0,1,2,
> i_parent_start = 1,96,50,
> j_parent_start = 1,70,28,
> parent_grid_ratio = 1,3,3,
> parent_time_step_ratio = 1,3,3,
> feedback = 1,
> smooth_option = 0
> /
>
> &physics
> mp_physics = 6, 6, 6,
> ra_lw_physics = 1, 1, 1,
> ra_sw_physics = 1, 1, 1,
> radt = 10, 10, 10,
> sf_sfclay_physics = 1, 1, 1,
> sf_surface_physics = 2, 2, 2,
> bl_pbl_physics = 1, 1, 1,
> bldt = 0, 0, 0,
> cu_physics = 0, 0, 0,
> cudt = 5, 5, 5,
> isfflx = 1,
> ifsnow = 0,
> icloud = 1,
> surface_input_source = 1,
> num_soil_layers = 4,
> ucmcall = 0,
> mp_zero_out = 0,
> maxiens = 1,
> maxens = 3,
> maxens2 = 3,
> maxens3 = 16,
> ensdim = 144,
> slope_rad = 0,
> topo_shading = 0,
> /
>
> &fdda
> /
>
> &dynamics
> w_damping = 0,
> diff_opt = 1,
> km_opt = 4,
> diff_6th_opt = 0,
> diff_6th_factor = 0.12,
> base_temp = 290.
> damp_opt = 0,
> zdamp = 5000., 5000., 5000.,
> dampcoef = 0.01, 0.01, 0.01
> khdif = 0, 0, 0,
> kvdif = 0, 0, 0,
> non_hydrostatic = .true., .true., .true.,
> pd_moist = .true., .true., .true.,
> pd_scalar = .true., .true., .true.,
> /
>
> &bdy_control
> spec_bdy_width = 5,
> spec_zone = 1,
> relax_zone = 4,
> specified = .true., .false.,.false.,
> nested = .false., .true., .true.,
> /
>
> &grib2
> /
>
> &namelist_quilt
> nio_tasks_per_group = 0,
> nio_groups = 1,
> /
>
> -------------- next part --------------
> &share
> wrf_core = 'ARW',
> max_dom = 3,
> start_date = '2008-12-10_12:00:00', '2008-12-10_12:00:00',
> '2008-12-10_12:00:00',
> end_date = '2008-12-10_15:00:00', '2008-12-10_15:00:00',
> '2008-12-10_15:00:00',
> interval_seconds = 10800,
> io_form_geogrid = 2,
> opt_output_from_geogrid_path = '/home/wrf/domains/em/MARIFULL/',
> debug_level = 0,
> /
>
> &geogrid
> parent_id = 1,1,1,
> parent_grid_ratio = 1,3,3,
> i_parent_start = 1,96,50,
> j_parent_start = 1,70,28,
> e_we = 168,91,151,
> e_sn = 136,61,85,
> geog_data_res = '2m','30s','30s',
> dx = 4000,
> dy = 4000,
> map_proj = 'lambert',
> ref_lat = 45.75,
> ref_lon = -64,
> truelat1 = 45.75,
> truelat2 = 45.75,
> stand_lon = -64,
> geog_data_path = '/wrf/geog_data',
> opt_geogrid_tbl_path = '/home/wrf/domains/em/MARIFULL/',
> ref_x = 84.0,
> ref_y = 68.0,
> /
>
> &ungrib
> out_format = 'WPS',
> prefix = 'FILE',
> /
>
> &metgrid
> fg_name = 'FILE',
> io_form_metgrid = 2,
> opt_output_from_metgrid_path = '/home/wrf/domains/em/MARIFULL/',
> opt_metgrid_tbl_path = '/home/wrf/domains/em/MARIFULL/',
> /
>
> &mod_levs
> press_pa = 201300 , 200100 , 100000 ,
> 95000 , 90000 ,
> 85000 , 80000 ,
> 75000 , 70000 ,
> 65000 , 60000 ,
> 55000 , 50000 ,
> 45000 , 40000 ,
> 35000 , 30000 ,
> 25000 , 20000 ,
> 15000 , 10000 ,
> 5000 , 1000
> /
>
>
> &domain_wizard
> grib_data_path = '/mnt/sigma_wrf/grib_data/NAM2008121012',
> grib_vtable = 'Vtable.NAM',
> dwiz_name =MARIFULL
> dwiz_desc =Test of 4 km and 1 km over Halifax
> dwiz_user_rect_x1 =615
> dwiz_user_rect_y1 =226
> dwiz_user_rect_x2 =692
> dwiz_user_rect_y2 =273
> dwiz_show_political =true
> dwiz_center_over_gmt =true
> dwiz_latlon_space_in_deg =10
> dwiz_latlon_linecolor =-8355712
> dwiz_map_scale_pct =25
> dwiz_map_vert_scrollbar_pos =0
> dwiz_map_horiz_scrollbar_pos =0
> dwiz_gridpt_dist_km =4.0
> dwiz_mpi_command =
> /
> -------------- next part --------------
> A non-text attachment was scrubbed...
> Name: projection.jpg
> Type: image/jpeg
> Size: 57095 bytes
> Desc: not available
> Url : http://mailman.ucar.edu/pipermail/wrf-users/attachments/20090121/c69e4cea/projection.jpg
>
> ------------------------------
>
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>
> End of Wrf-users Digest, Vol 53, Issue 14
> *****************************************
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