[torqueusers] Multi-homed execution hosts

Gavin Rees gavintimothyrees at yahoo.co.uk
Fri Apr 13 02:19:33 MDT 2007


Hello All

I'm a little confused with the set-up of torque on execution hosts
which are multi-homed. I am using torque-2.1.2 and trying to set up a
dual network cluster consisting of a server with 10 attached
nodes. All 11 machines are attached to the same switch, but added to
this, the last 5 execution hosts are attached to a separate network
hidden from the pbs server and the first five nodes. The goal is to
separate the jobs' inter-node communication from the pbs and nfs
communication, on the last 5 nodes.

To put it another way, nfs/pbs communication should be done via the IP
addresses 192.168.0.*, and the jobs' inter-node communication on the
last 5 nodes should be done via the IP addresses 10.0.0.*.  The server
(and the first 5 nodes) have no knowledge of the 10.0.0.* network.

Currently, all communication is done via the 192.168.0.* network and
all attempts to add the second network have failed. Changing the
/etc/hosts file on the nodes to point the the execution hosts 10.0.0.*
network gives the error:

pbs_mom;Svr;im_request;connect from 10.0.0.6:1023
04/12/2007 12:16:28;0001;   pbs_mom;Svr;pbs_mom;im_request, bad connect from 10.0.0.6:1023 - unauthorized (okclients: 192.168.0.6,192.168.0.5,192.168.0.4,192.168.0.3,192.168.0.2,192.168.0.1,192.168.0.10,192.168.0.9,192.168.0.8,192.168.0.99,192.168.0.7,127.0.0.1)

My question is, how do I set up torque on the nodes so that pbs and job
communication are done via separate networks?  

Thanks in advance for any help you can provide.

Gavin Rees
       
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