Dear Mr<br>I need help.<br>This is my first time to use MPICH2 and when i run a.out file by this order<br>"mpirun -machinefile hosts -n 2 ./a.out" i got that error<br><br>"[cli_0]: aborting job:<br>Fatal error in MPI_Recv: Other MPI error, error stack:<br>MPI_Recv(186)................................: MPI_Recv(buf=0xbfd17014, count=100, MPI_CHAR, src=1, tag=50, MPI_COMM_WORLD, status=0xbfd17000) failed<br>MPIDI_CH3i_Progress_wait(215)................: an error occurred while handling an event returned by MPIDU_Sock_Wait()<br>MPIDI_CH3I_Progress_handle_sock_event(640)...:<br>MPIDI_CH3_Sockconn_handle_connopen_event(887): unable to find the process group structure with id <><br>[cli_1]: aborting job:<br>Fatal error in MPI_Send: Other MPI error, error stack:<br>MPI_Send(173).............................: MPI_Send(buf=0x7fff56ae6730, count=26, MPI_CHAR, dest=0, tag=50, MPI_COMM_WORLD) failed<br>MPIDI_CH3i_Progress_wait(215).............: an error occurred while
handling an event returned by MPIDU_Sock_Wait()<br>MPIDI_CH3I_Progress_handle_sock_event(420):<br>MPIDU_Socki_handle_read(633)..............: connection failure (set=0,sock=1,errno=104:(strerror() not found))<br>rank 1 in job 3 hisham_45672 caused collective abort of all ranks<br> exit status of rank 1: return code 1<br>rank 0 in job 3 hisham_45672 caused collective abort of all ranks<br> exit status of rank 0: return code 1"<br><br>where host file contain hostnames: hisham:1<br> rania:1<br><br>one of the PCs use Intel Duo Core and the other one is AMD.<br><br>This is the Greeting program.Please i need help<br><p> 
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