Running and Verification

Procedure

1. Use PuTTY to log in to the server as the root user.
2. Run the following commands to create and go to the working directory:

   mkdir /path/to/WW3_TEST
   cd /path/to/WW3_TEST

3. Download the test case and copy it to the /path/to/WW3_TEST directory.
4. Run the following commands to decompress the package:

   tar -xvf ww3_from_ftp.v6.07.tar.gz
   cd cases

5. Run the following commands to set environment variables:

   source /path/to/WAVEWATCH/WW3-6.07.1/env_ww3.sh
   export ww3_dir=/path/to/WAVEWATCH/WW3-6.07.1/model

6. Run the following commands to modify the mww3_case_01 file:
   1. Open mww3_case_01.

      vi  mww3_case_01

   2. Press i to enter the insert mode and modify the file as follows:
      Line 61:

      #cd /scratch1/portfolios/NCEPDEV/ocean/noscrub/Henrique.Alves/WW3_CASES/cases

      Line 65:

      #module load intel mpt grads

      Line 72:

      compstr="Gnu"

      Line 143:

      #ww3_dir='echo $case_dir | sed 's/\/cases\/*//g''

      Line 138:

      proc=96

      Line 420:

      mpirun --allow-run-as-root --mca btl ^openib -np $proc --hostfile /path/to/WW3_TEST/hostfile $path_e/ww3_multi

   3. Press Esc, type :wq!, and press Enter to save the file and exit.
7. Run the following command to create a host file:
   1. Create host.

      vi hostfile

   2. Press i to enter the insert mode and add the following content:

      node1
      node2

   3. Press Esc, type :wq!, and press Enter to save the file and exit.
8. Open another login window and use PuTTY to log in to node 2 as the root user.
9. On node 2, run the following command to configure environment variables:
   1. Open .bashrc.

      vi /root/.bashrc

   2. Press i to enter the insert mode, and add the following content to the end of the .bashrc file:

      export PATH=/path/to/GNU/bin:/path/to/OPENMPI/bin:$PATH
      export LD_LIBRARY_PATH=/path/to/GNU/lib64:/path/to/OPENMPI/lib:$LD_LIBRARY_PATH

   3. Press Esc, type :wq!, and press Enter to save the file and exit.
10. On node 1, run the following command to start the WAVEWATCH III program:

    ./mww3_case_01

    If the information shown in Figure 1 is displayed when the WAVEWATCH III program is complete, the WAVEWATCH III program is running properly.

    Figure 1 Result example
    

    Check the value of Elapsed time in the work_case_01/log.mww3 log file. The unit is second. A smaller value indicates better performance.

    Figure 2 shows the command output.

    Figure 2 Result example