Overview

WRF (Weather Research and Forecasting) is a numerical weather prediction system used in atmospheric research and forecasting workflows. It supports parallel computation and is commonly used for mesoscale weather simulation.

This example demonstrates how to submit a WRF job in IEC and verify that the expected output files are generated.

Procedure

Preparing Input Data

1. Go to EonKube > HPC > File Explorer.
2. Create a folder named wrf_data under your home directory.
3. Upload the required meteorological data and configuration files inside it.

Submitting the Job

1. Go to EonKube > Apps > Marketplace.
2. Open the WRF application page.
3. Click Submit.
4. Configure the required settings, including:
   • Basic Settings
     • Project: Select a Project from the drop-down menu
     • Job Name: For example, wrf-job.
     • App Version: Choose the version of the WRF application, such as 4.1.0 for Singularity.
     • MPI: Enable if MPI execution is required
   • Resource Configuration:
     Configure control node and compute node resources according to workload requirements.
     Example configuration:
     • Control Node
       • CPU: 1 Core
       • Memory: 2 GiBs.
     • Compute Node
       • CPU: 2 Cores.
       • Memory: 4 GiBs.
   • Command Settings: Enter the command to execute WRF.
     Example:

     mkdir -p wrf_test
     singularity run $APP_BINARY bash -c "ln -sf /usr/local/WPS_WRF/WRF-4.3-ARW/run/* wrf_test/"
     cp wrf_data/met_em* wrf_test/
     cp wrf_data/namelist.input wrf_test/
     cd wrf_test/
     mpirun --host $MPI_HOST -np $NODE_NUM singularity run $APP_BINARY ./real.exe
     mpirun --host $MPI_HOST -np $NODE_NUM singularity run $APP_BINARY ./wrf.exe

5. Click on Create to submit the job.

Monitoring the Job

1. Go to EonKube > HPC > Volcano Jobs.
2. Locate the WRF job.
3. Confirm that the status changes to Completed.
4. Click ⋮ > View Logs to review execution detail. Check if there are information show like below.

   Done! Written: relion_test_MotionCorr/corrected_micrographs.star
   Now generating logfile.pdf ...
   Done! Written: relion_test_MotionCorr/logfile.pdf

Review Results

1. Go to EonKube > HPC > File Explorer.
2. Open the wrf_data folder or the configured output directory.
3. Verify that output files such as wrfout_d0* have been generated
4. Confirm that the output log contains the expected completion message such as SUCCESS COMPLETE WRF.

Users can further analyze results by using tools such as NCL or other post-processing tools compatible with WRF output.