encount error while running real_nmm.exe

Dear all,

I hit  "/opt/mpi/intel-18.0/mvapich2-2.3/bin/mpiexec -f /home/lwj/jobs/MODL/HWRF/HWRF_v3.9a/hwrfrun_ckcd/wrappers/hosts -np 4 ./real_nmm.exe"

in my command after geogrid. ungrib. metgrid.exe were successfully implemeted.

I got below error message while I am running real_nmm.exe

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taskid: 0 hostname: node10
*** The MPI_Comm_f2c() function was called before MPI_INIT was invoked.
*** This is disallowed by the MPI standard.
*** Your MPI job will now abort.
[node10:413169] Local abort before MPI_INIT completed completed successfully, but am not able to aggregate error messages, and not able to guarantee that all other processes were killed!
---------------------------------------------------

Do you have any idea what I am wrong ?

I am looking forward to your reply.

Thanks,

Woojeong