Weather Research and Forecasting (WRF) model is a common atmospheric modeling system developed by NCAR. It is suitable for both meteorological research and operational weather prediction.
Official website: https://www2.mmm.ucar.edu/wrf/users/
Updated: Feb May 2023
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Available version
WRF Version | Module name | OptimizationNote |
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4.4.2 | WRF/4.4.2-DMSM-CrayCCEcpeCray-2223.0603 | Aggressive |
WRF/4.4.2-DMSM-CrayGNU-22.06 | Standard | |
optimization |
WPS Version | Module name | Optimization | ||
|---|---|---|---|---|
4.4 | WPS/4.4-DM-CrayCCEcpeCray-2223.0603 | Aggressive | WPS/4.4-DM-CrayGNU-22.06 | Standardoptimization |
1. Input file
1.1 To drive run the WRF model, time-dependent meteorological data (global model output/background state) is required. It can be downloaded from, for example, WRF - Free Data and NCEP GFS / GDAS.
1.2 To set configure the domain configuration and simulation time, the namelist.wps is needed. A short detail brief description of it can be found here. It is advised recommended to define use the WRF domains using WRF Domain Wizard or the GIS4WRF plug-in for QGIS to define WRF domains.
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Users can use utilize static geographical data already available on LANTA by specifying |
1.3 To run the WRF model, the namelist.input is neededrequired. A concise information description of the essential parameters can be found here, while the full description is available in chapter 5 of the WRF user's guide.
2. Job submission script
An Below is an example of a WRF submission script is shown below. It could can be created by using vi submitWRF.sh. For To ensure whole node allocation, please confirm verify that 128 x (Number of nodes) = (Number of MPI processes) x (Number of OpenMP threads per MPI processes).
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#!/bin/bash #SBATCH -p compute # Partition #SBATCH -N 1 # Number of nodes #SBATCH --ntasks=1632 # Number of MPI processes #SBATCH --cpus-per-task=84 # Number of OpenMP threads per MPI process #SBATCH -t 02:00:00 # Job runtime limit #SBATCH -J WRF # Job name #SBATCH -A ltXXXXXXltxxxxxx # Account *** {USER EDIT} *** module purge module load WPS/4.4-DM-CrayCCEcpeCray-2223.0603 module load WRF/4.4.2-DMSM-CrayCCEcpeCray-22.06 ### A fix for CrayMPICH, until further notice ### module load craype-network-ucx module swap cray-mpich cray-mpich-ucx module load libfabric/1.15.0.0 export UCX_TLS=all export UCX_WARN_UNUSED_ENV_VARS=n # -- (Recommended) -- # export 23.03 export OMP_STACKSIZE="32M" export OMP_NUM_THREADS=${SLURM_CPUS_PER_TASK} ulimit -s unlimited # *** {USER EDIT} *** # # Please check that namelist.wps and namelist.input are in this same directory link_grib /--Path-to-your-meteorological-data--/ link_vtable /--Name-of-Vtable-to-parse-the-above-met-data--/ # -- WPS -- # link_wps srun -n${SLURM_NTASKS} ./geogrid.exe srun -N1 -n1 ./ungrib.exe srun -n${SLURM_NTASKS} ./metgrid.exe unlink_wps # -- WRF -- # link_emreal srun -n${SLURM_NTASKS} ./real.exe srun -n${SLURM_NTASKS} -c${SLURM_CPUS_PER_TASK} ./wrf.exe unlink_emreal |
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More Additional information about ThaiSC custom commands for the WPS and WRF modules can be found accessed by using commands such as |
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Some options do not support hybrid run |
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. To determine if this is the case, do the following:
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3. Job submission
To submit jobs to the SLURM queuing system on LANTA, execute sbatch submitWRF.sh.
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If WPS and WRF jobs are going to need be submitted separately, users could use the |
A complete example is available at /project/common/WRF/Example1. To run it under within a directory, use cp /project/common/WRF/Example1/* ., edit the account details by using vi submitWRF.sh to edit the account and execute and then issue the command sbatch submitWRF.sh.
4. Post-processing
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Other main packages installed in netcdf-py39 are NCO, CDO, netcdf4-python, wrf-python, pyngl, pynio and cartopy.
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