On Tue, 14 Oct 2003, Erwan Velu wrote:
> So lamboot is rshing my first node
Does this connection from rank0 to the others go through 10.0 interface or
through 172.16 interface ?
> but in answer nodes are trying to answer to the IP address that match
> the hostname of my server (172.16.1.253).
If you run "ping master.domcomp.com" from a compute node which IPs are
used ? There might be a name resolution problem...
> It is possible to ask lamboot to give the nodes the IP address of the
> NIC I want and not giving the IP Address that equals my hostname ?
Sure. I do this all the time (although not with LAM 7.x yet). Some of the
nodes have a Gigabit NIC which is used for computation and a FastEth one
used for file-serving and remote (ssh) access. The trick is to specify in
the LAM boot file the names coresponding to the NIC you want to use. In my
case I have nodexxx (corresponding to FastE NIC's IP) and gigaxxx
(corresponding to GigaE NIC's IP) names and use the gigaxxx ones in the
bootfiles - in this case also the rsh/ssh connections to start the LAM
daemons are made through these interfaces.
--
Bogdan Costescu
IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
E-mail: Bogdan.Costescu_at_[hidden]
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