I'm very happy about that. For the benefit of other users let me just state the error message you observed in text here, to make it searchable:
Fatal error in MPI_Init: Other MPI error, error stack:
MPIR_Init_thread(392)..............:
MPID_Init(139).....................: channel initialization failed
MPIDI_CH3_Init(38).................:
MPID_nem_init(234).................:
MPID_nem_tcp_init(108).............:
MPID_nem_tcp_get_business_card(346):
MPID_nem_tcp_init(305).............: gethostbyname failed, nano6 (errno 1)
And, again, in case you see this while running mpiexec, besides checking /etc/hosts, also check your machine file (cf.
http://quantumwise.com/forum/index.php?topic=1360.0#.UkA1XIbdeKx)