[wxm@pc2 lam]$ lamboot -v lamhosts
 
LAM 7.1.4/MPI 2 C++/ROMIO - Indiana University
 
n-1<4600> ssi:boot:base:linear: booting n0 (192.168.33.202)
n-1<4600> ssi:boot:base:linear: booting n1 (192.168.33.203)
wxm@192.168.33.203's password: 
wxm@192.168.33.203's password: 
-----------------------------------------------------------------------------
The lamboot agent failed to read a message over a socket from the
newly-booted process.  This should not happen (especially since TCP is
a guaranteed protocol).  
 
*** PLEASE READ THIS ENTIRE MESSAGE, FOLLOW ITS SUGGESTIONS, AND
*** CONSULT THE "BOOTING LAM" SECTION OF THE LAM/MPI FAQ
*** (http://www.lam-mpi.org/faq/) BEFORE POSTING TO THE LAM/MPI USER'S
*** MAILING LIST.
 
You should probably check the following:
 
- Network connectivity: Ensure that messages can be passed reliably
  over TCP using random ports.
- Environment / PATH settings: Ensure that you are running the same
  version of LAM/MPI on all nodes.  Sometimes premature disconnects
  (and therefore this error message) may be caused if mismatched
  versions of LAM are used on different nodes.
- Node health: Ensure that the host where the newly-booted process was
  launched is healthy and still available on the network.
-----------------------------------------------------------------------------
n-1<4600> ssi:boot:base:linear: aborted!
n-1<4606> ssi:boot:base:linear: booting n0 (192.168.33.202)
n-1<4606> ssi:boot:base:linear: booting n1 (192.168.33.203)
wxm@192.168.33.203's password: 
wxm@192.168.33.203's password: 
n-1<4606> ssi:boot:base:linear: finished
lamboot did NOT complete successfully