Hi,
what's in your $PATH? Maybe there is a bla:.:blub inside and a wrong a.out is
taken. Try to give the full path to your executable - or try to name it other
than a.out.
CU - Reuti
Quoting Yeliang Zhang <zhang_at_[hidden]>:
> Hi,
>
> I am testing my program under Lam MPI environment. I ended up debugging
> a small portion of the code like:
>
> PROGRAM mytest
> include 'mpif.h'
>
> integer a,b,i,j, me
> integer ierror
>
> call MPI_init(ierror)
> call MPI_comm_rank(MPI_COMM_WORLD, me, ierror)
> print*, me
> call MPI_finalize(ierror)
>
> end program
>
>
> This program runs fine under any directory other than my project
> directory.
>
> As long as it is run under my project directory, no matter the
> executable is generated by simple mpif77 or make file, there will be
> error:
>
> [/home/zhang/hydrology/parallel] mpirun -np 4 a.out
> MPI_Comm_rank: invalid communicator: Invalid argument (rank 0,
> MPI_COMM_WORLD)
> Rank (0, MPI_COMM_WORLD): Call stack within LAM:
> Rank (0, MPI_COMM_WORLD): - MPI_Comm_rank()
> Rank (0, MPI_COMM_WORLD): - main()
> MPI_Comm_rank: invalid communicator: Invalid argument (rank 1,
> MPI_COMM_WORLD)
> Rank (1, MPI_COMM_WORLD): Call stack within LAM:
> Rank (1, MPI_COMM_WORLD): - MPI_Comm_rank()
> Rank (1, MPI_COMM_WORLD): - main()
> MPI_Comm_rank: invalid communicator: Invalid argument (rank 2,
> MPI_COMM_WORLD)
> Rank (2, MPI_COMM_WORLD): Call stack within LAM:
> Rank (2, MPI_COMM_WORLD): - MPI_Comm_rank()
> Rank (2, MPI_COMM_WORLD): - main()
> MPI_Comm_rank: invalid communicator: Invalid argument (rank 3,
> MPI_COMM_WORLD)
> Rank (3, MPI_COMM_WORLD): Call stack within LAM:
> Rank (3, MPI_COMM_WORLD): - MPI_Comm_rank()
> Rank (3, MPI_COMM_WORLD): - main()
> -----------------------------------------------------------------------------
> One of the processes started by mpirun has exited with a nonzero exit
> code. This typically indicates that the process finished in error.
> If your process did not finish in error, be sure to include a "return
> 0" or "exit(0)" in your C code before exiting the application.
>
> PID 8326 failed on node n0 (127.0.0.1) with exit status 1.
> -----------------------------------------------------------------------------
> forrtl: error (78): process killed (SIGTERM)
>
>
>
> I lamboot the MPI environment correctly. Do you guys have any
> suggestion?
>
> Thank you very much.
>
> Zhang
>
>
>
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