Running and Verification

Procedure

1. Use PuTTY to log in to the server as the root user.
2. Go to the test directory.

   cd /path/to/SPECFEM3D_ GLOBE/specfem3d_globe-7.0.0

3. Perform the single-node test.

   mpirun --allow-run-as-root -np 64 --mca btl ^openib ./bin/xmeshfem3D
   mpirun --allow-run-as-root -np 64 --mca btl ^openib ./bin/xspecfem3D
   vim OUTPUT_FILES/output_solver.txt

   If the following information is displayed, the running is successful:

   

4. If the test must be performed on more than one node, edit the hostfile file.
   1. Open the hostfile file.

      vi hostfile

   2. Press i to enter the edit mode and modify the file as follows:

      Node1
      Node2

      

      Node1 and Node2 are the node names. Change them based on the site requirements and ensure that the nodes can ping each other.

   3. Press Esc, enter :wq!, and press Enter to save the changes and exit.
5. Perform the multiple-node test.

   mpirun --allow-run-as-root -x PATH=$PATH -x LD_LIBRARY_PATH=$LD_LIBRARY_PATH --hostfile hostfile -np 32 –N 16 --mca btl ^openib ./bin/xmeshfem3D
   mpirun --allow-run-as-root -x PATH=$PATH -x LD_LIBRARY_PATH=$LD_LIBRARY_PATH –np 32 -N 16 --mca btl ^openib ./bin/xspecfem3D

   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.