1) the directory /tftpboot/pxelinux.cfg contains a file for each node (that 
name of the file is the hex conversion of the IP addr of the node).  after a 
node is installed, the contents of the file for that node's IP should be 
something like:
 
[...@argo pxelinux.cfg]$ cat COA80102
DEFAULT localhost
 
LABEL localhost
LOCALBOOT 0
 
this tells thie node to boot off its local disk.  if you delete this file and 
reboot the node in question and let it pxeboot, it should go through the series 
of steps of looking for this file, not finding it, then searching down until it 
exhausts all possible options and defaults to the "default" file will image the 
node.
 
2) when you run mpi, you have to give it a hosts file, correct?  in that file, 
you can include the IP addrs or names you've assigned to the 2nd interfaces on 
your system, so mpi will communicate over that, and then use the other addr or 
name you've assigned it when you're configuring OSCAR, ganglia, etc.
 
--Joe

________________________________

From: Ali Nazemian [mailto:alinazem...@gmail.com]
Sent: Sat 4/17/2010 3:55 AM
To: oscar-users@lists.sourceforge.net
Subject: [Oscar-users] Fwd: Two questions




---------- Forwarded message ----------
From: Ali Nazemian <alinazem...@gmail.com>
Date: Fri, Apr 9, 2010 at 9:18 PM
Subject: Two questions
To: oscar-users@lists.sourceforge.net


Hi everyboady,
I am using oscar 5 for a while and i have two different unanswered questions , 
please help me if you know,
Thanks a lot.
1- how can i reimage compute nodes?!
2- how can i use different Ethernet port for monitoring and MPI? i mean 1 port 
for management and 1 port for MPI?
Best regards.

-- 
A.Nazemian




-- 
A.Nazemian

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