[Beowulf] mpich2 error in 8 nodes

[Diego Moreno]

 Dear All,

I kept having this error message, I couldnt find out why, anybody have
similar experience?

Fatal error in MPI_Barrier: Other MPI error, error stack:
MPI_Barrier(406): MPI_Barrier(MPI_COMM_WORLD) failed
MPIR_Barrier(76):
MPIC_Sendrecv(152):
MPIC_Wait(321):
MPIDI_CH3_Progress_wait(209): an error occurred while handling an
event returned by MPIDU_Sock_Wait()
MPIDI_CH3I_Progress_handle_sock_event(489):
connection_recv_fail(1836):
MPIDU_Socki_handle_read(658): connection failure
(set=0,sock=2,errno=104:Connection reset by peer)
aborting job:

but in 7 nodes run fine, and not errors

can you help me ?

thanks!
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