Example 1: Run WRF

cp -r /tarafs/data/project/common/WRF/Example1/GFS/ .    # Copy the prepared example data to the current directory

cd WPS
ln -s ./ungrib/Variable_Tables/Vtable.GFS ./Vtable  # For GFS data, link Vtable.GFS to the same location as ungrib.exe, naming it Vtable

./link_grib.csh Path_to_your_data      # Path to the folder containing the GFS data *** {USER EDIT} ***

# Edit namelist.wps 
# as follows while leave the others unchanged

### Share ###
  start_date     = '2022-05-09_00:00:00',  '2022-05-09_00:00:00',
  end_date       = '2022-05-09_12:00:00',  '2022-05-09_12:00:00',

### Geogrid ###
  i_parent_start =  1,  43,
  j_parent_start =  1,  53,
  e_we           = 120, 121,
  e_sn           = 150, 151,
  dx             = 36000,
  dy             = 36000,
  map_proj       = 'mercator',
  ref_lat        = 13.208,
  ref_lon        = 101,
  truelat1       = 13.208,
  truelat2       = 0,
  stand_lon      = 100.861,
  geog_data_path = '../WPS_GEOG' # *** {USER EDIT} ***

cp ./util/plotgrids_new.ncl .    # Copy the script to the same directory as namelist.wps
nano plotgrids_new.ncl           # Comment/uncomment the variable "type" 
                                 # For X11 (default), X11 Forwarding must be enabled.
ncl plotgrids_new.ncl            # Run the script

cp -r /tarafs/data/project/common/WRF/Example1/submitWPS.sh .   # Copy the script to WPS directory
nano submitWPS.sh                               # Specify your project account *** {USER EDIT} **

#!/bin/bash
#SBATCH -p devel                    # Partition or machine type [devel/compute/memory]
#SBATCH -N 1 --ntasks-per-node=4    # Number of nodes and Number of core per node
#SBATCH -t 02:00:00                 # Total run time limit (hour:minute:second)
#SBATCH -J WPS_Ex1                  # Job name (short)
#SBATCH -A projxxxx                 # Your project account *** {USER EDIT} ***

module purge
module load netCDF-Fortran/4.5.2-iimpi-2019b
module load libpng/1.6.37-GCCcore-8.3.0
module load JasPer/1.900.1-intel-2019b

export JASPERINC=$EBROOTJASPER/include
export JASPERLIB=$EBROOTJASPER/lib

ulimit -s unlimited         # MUST have otherwise ERROR

srun -n4 ./geogrid.exe      # Run geogrid.exe using 4 CPU cores (-n4)  
srun -n1 ./ungrib.exe       # ungrib.exe MUST run in serial (-n1)
srun -n4 ./metgrid.exe      # Run metgrid.exe using 4 CPU cores	(-n4)

# It is more efficient to run geogrid.exe, metgrid.exe and real.exe using a few CPU cores and enough memory.

sbatch submitWPS.sh

# Edit namelist.input 
# in ./WRF/test/em_real or your duplicated em_real folder
# as follows while leave the others unchanged

### Time_control ###
  run_days                            = 0,
  run_hours                           = 12,
  run_minutes                         = 0,
  run_seconds                         = 0,
  start_year                          = 2022, 2022,
  start_month                         = 05,   05,
  start_day                           = 19,   19,
  start_hour                          = 00,   00,
  end_year                            = 2022, 2022,
  end_month                           = 05,   05,
  end_day                             = 19,   19,
  end_hour                            = 12,   12,
  frames_per_outfile                  = 6, 6,

### Domains ###
  time_step                           = 80,
  e_we                                = 120,    121,
  e_sn                                = 150,    151, 
  e_vert                              = 50,     50,
  dx                                  = 36000,
  dy                                  = 36000,
  grid_id                             = 1,     2,
  parent_id                           = 0,     1,
  i_parent_start                      = 1,     43,
  j_parent_start                      = 1,     53,

### Physics ###
  physics_suite                       = 'tropical'

### Bdy_control ###
  specified                           = .true.,  .false.,
  nested                              = .false.,  .true.,

ln -s Path_to_WPS/met_em* .   # Path to WPS folder containing met_em files *** {USER EDIT} *** 
                              # Link ./WPS/met_em* to ./WRF/test/em_real/ or your duplicated em_real folder 

cp -r /tarafs/data/project/common/WRF/Example1/submitWRF.sh .   # Copy the script to your em_real directory
nano submitWRF.sh                                      # Specify your project account *** {USER EDIT} **

#!/bin/bash
#SBATCH -p compute                  # Partition or machine type [devel/compute/memory]
#SBATCH -N 1 --ntasks-per-node=40   # Number of nodes and Number of core per node
#SBATCH -t 24:00:00                 # Total run time limit (hour:minute:second)
#SBATCH -J WRF_Ex1                  # Job name (short)
#SBATCH -A projxxxx                 # Your project account *** {USER EDIT} ***

module purge
module load netCDF-Fortran/4.5.2-iimpi-2019b
module load libpng/1.6.37-GCCcore-8.3.0
module load JasPer/1.900.1-intel-2019b

export OMP_NUM_THREADS=1            # OpenMP threads per MPI process
export JASPERINC=$EBROOTJASPER/include
export JASPERLIB=$EBROOTJASPER/lib

ulimit -s unlimited                 # MUST have otherwise ERROR

srun -n8 ./real.exe                 # Run real.exe using 8 CPU cores (-n8)
srun -n40 -c1 ./wrf.exe

# It is more efficient to run geogrid.exe, metgrid.exe and real.exe using a few CPU cores (but enough memory).

sbatch submitWRF.sh
tail -F rsl.out.0000        # (Optional) see the progress