Running and Verification

Procedure

1. Use PuTTY to log in to the server as the root user.
2. Run the following command to go to the work directory:

   cd /path/to/NEMO/NEMO/releases/release-3.6/NEMOGCM/CONFIG/MY_AMM12/EXP00

3. Upload AMM12_v3.6.tar to /path/to/NEMO/NEMO/releases/release-3.6/NEMOGCM/CONFIG/MY_AMM12/EXP00.
4. Run the following commands to decompress the package:

   tar xf AMM12_v3.6.tar
   gunzip *.gz */*.gz
   rm domain_def.xml field_def.xml namelist_ref -f
   ln -s ../../SHARED/domain_def.xml ./domain_def.xml
   ln -s ../../SHARED/field_def.xml ./field_def.xml
   ln -s ../../SHARED/namelist_ref ./namelist_ref

5. 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.
6. Run the following command to start the NEMO program.

   { time mpirun --allow-run-as-root -np 192 -N 96 -hostfile hostfile --mca btl ^openib ./opa ; } 2>&1 | tee -a NEMO.log

   Table 1 Parameters

   Parameter	Description
   -np	Total number of processes used in the test.
   -N	Number of processes running on each server.
   --hostfile	Name of the node to be used.

   If the information shown in Figure 1 is displayed at the end of the ocean.output log generated by NEMO, the NEMO program ends normally.

   Figure 1 Test example
   

   Check the value of real in the NEMO.log file. The unit is second. A higher the value indicates a lower performance. Figure 2 shows the output result.

   Figure 2 Test example