[mpich-discuss] Fatal Error_Need help

[Hisham Adel]

Dear Mr
I need help.
This is my first time to use MPICH2 and when i run a.out file by this  order
"mpirun -machinefile hosts -n 2 ./a.out" i got that error

"[cli_0]: aborting job:
Fatal error in MPI_Recv: Other MPI error, error stack:
MPI_Recv(186)................................: MPI_Recv(buf=0xbfd17014, count=100, MPI_CHAR, src=1, tag=50, MPI_COMM_WORLD, status=0xbfd17000) failed
MPIDI_CH3i_Progress_wait(215)................: an error occurred while handling an event returned by MPIDU_Sock_Wait()
MPIDI_CH3I_Progress_handle_sock_event(640)...:
MPIDI_CH3_Sockconn_handle_connopen_event(887): unable to find the process group structure with id <>
[cli_1]: aborting job:
Fatal error in MPI_Send: Other MPI error, error stack:
MPI_Send(173).............................: MPI_Send(buf=0x7fff56ae6730, count=26, MPI_CHAR, dest=0, tag=50, MPI_COMM_WORLD) failed
MPIDI_CH3i_Progress_wait(215).............: an error occurred while handling an event returned by MPIDU_Sock_Wait()
MPIDI_CH3I_Progress_handle_sock_event(420):
MPIDU_Socki_handle_read(633)..............: connection failure (set=0,sock=1,errno=104:(strerror() not found))
rank 1 in job 3  hisham_45672   caused collective abort of all ranks
  exit status of rank 1: return code 1
rank 0 in job 3  hisham_45672   caused collective abort of all ranks
  exit status of rank 0: return code 1"

where host file contain hostnames: hisham:1
                                                   rania:1

one of the PCs use Intel Duo Core and the other one is AMD.

This is the  Greeting program.Please i need help

       
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