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I tried to use MPI to parallel running external command line program.
So I write `run.f90`
program run use mpi implicit none integer::num_process,rank,ierr; call MPI_Init(ierr); call MPI_Comm_rank(MPI_COMM_WORLD, rank,ierr); call MPI_Comm_size(MPI_COMM_WORLD, num_process,ierr); call execute_command_line('./a.out') call MPI_Finalize(ierr); end program
I compile it using intel compiler like
mpiifort run.f90 -o run.out
Now if `./a.out` is normal non-MPI program like
program test implicit none print*,'hello' end
then
mpiexec.hydra -n 4 ./run.out
works fine.
However, if `./a.out` is also a MPI program like
program mpi_test use mpi implicit none integer::num_process,rank,ierr; call MPI_Init(ierr); call MPI_Comm_rank(MPI_COMM_WORLD, rank,ierr); call MPI_Comm_size(MPI_COMM_WORLD, num_process,ierr); print*,rank call MPI_Finalize(ierr); end program
Then, I got error after running "mpiexec.hydra -n 4 ./run.out"
==================================================================================== BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES= PID 19519 RUNNING AT i02n18= EXIT CODE: 13= CLEANING UP REMAINING PROCESSES= YOU CAN IGNORE THE BELOW CLEANUP MESSAGES======================================================================================================================================================================= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES= PID 19522 RUNNING AT i02n18= EXIT CODE: 13= CLEANING UP REMAINING PROCESSES= YOU CAN IGNORE THE BELOW CLEANUP MESSAGES===================================================================================Intel(R) MPI Library troubleshooting guide:
What is wrong?
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