[Beowulf] Re: quick and dirty method for starting job on another node?

[David Mathog]

> > > Any good systems person would shoot you, of course, for putting
any such
> > > thing on an open network.
> > 
> > rsh  :)

I missed the original post somehow.  If that poster wants something
that's really, really fast but hideously insecure for his tiny
feeble nodes consider using nettee like this:

   nettee -stm EOS -next $NEXTNODE | execinput 

See the distribution here for more info:

  http://saf.bio.caltech.edu/nettee.html

I've messed with this a little where the top node reads
from a fifo in -stm mode and a command sent to that fifo
with "echo" executes on every node in the chain very, very quickly,
essentially they run in parallel.  No rshd required.  NO
SECURITY TO SPEAK OF EITHER!  Good enough for a private subnet
though. If all he wants to do is contact
one node then change the nextnode part to _EOC_.

To shut down the session echo "EOS" to the fifo.  (Your
choice of string, it doesn't have to be EOS.)

Regards,

David Mathog
mathog at caltech.edu
Manager, Sequence Analysis Facility, Biology Division, Caltech