On Thu, Apr 08, 1999 at 11:12:03PM -0700, kaynjay@igalaxy.net wrote:
> I'm trying to set up 2-4 Debian boxes at school to run in parallel under
> lam (MPI) and have several problems frustrating me. The machines are
> currently Not
> recognized by their names (eg. dasher.myschool.edu ) but rather only by IP
> address. We have a DHCP-based network, and I have the ISC dhclient running.
Is the DHCP server telling the clients which name server to use? In the
ISC one you need to say something like:
option domain-name "localdomain";
option domain-name-servers cassiel.localdomain;
to do this). If your client doesn't pick this up, you could always
set up /etc/resolv.conf yourself.
> The lam daemon requires the ability to rsh into the other nodes. But I need
> a password to access the other systems. We are on a token-ring network.
Either create .rhosts files in the home directories of the users executing
programs or add all the nodes to /etc/hosts.equiv. Be aware that rsh is
not noted for its security, and if the cluster is connected to the internet
you probably want to hide it behind a firewall or something.
> Is there a way to get a password sent over to the other system when the
> lam daemon is connecting? (I recognize this likely belongs elsewhere, but I
That's what the .rhosts or hosts.equiv do.
> Does anyone have experience with MPI and know if lam is a good choice?
LAM is faster than MPICH (or was last time I heard or checked). IIRC
the version in slink is broken - you need to install the package from
unstable. There is a debian-beowulf mailing list, although it is
somewhat quiet as nobody's really figured out exactly what it's trying
to do yet.
--
Mark Brown mailto:broonie@tardis.ed.ac.uk (Trying to avoid grumpiness)
http://www.tardis.ed.ac.uk/~broonie/
EUFS http://www.eusa.ed.ac.uk/societies/filmsoc/
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