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[owner-orbit-user at winlab.rutgers.edu]

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<5f17261c0611101205k34bbc127sa3c96c397d548c06 at mail.gmail.com>
Date: Fri, 10 Nov 2006 15:05:35 -0500
From: "Zhibin Wu" <zbinwu at gmail.com>
To: orbit-user at winlab.rutgers.edu
Subject: Re: ORBIT-USER: Questions about forwarding experiment on grid
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The perl-script shall only run when node is up. So, I think the right
moment to run the perl-script is when the node is up and  before the
application starts.
Therefore, that is why the ruby script given in the Wiki page has
something like:

.....
whenAllInstalled() {|node|
puts "run something..."
  wait 30
  allNodes.startApplications
  wait 30
......

When you see  the prompt of "run something....", it is the moment to run
the perl script.

I'm sorry that this is tricky, and we are in the process of incorporate
this perl-script as part of the node configure procedure written in
RUBY.

Please try the experiment again. If any problems, let us know.

Zhibin

On 11/9/06, Yang Chen <yangchen at cc.gatech.edu> wrote:
> hi, all:
>
> Did anyone recently try the forwarding experiment
> (http://www.orbit-lab.org/wiki/Documentation/OTG/ScriptsRepository/Exp
> FWD)
> on the grid?
>
> I have two problems about this example:
>
> 1) route set-up for the sender to use forwarder I am assuming this 
> route setup should be done before the experiment.
> However, when I try the perl script, I always got an error msg
"SIOCADDRT:
> Network is unreachable", which means the 11.0.0.1 (expected gateway) 
> is unreachable.
> And I tried the "iwconfig" command on node4-3 but got only this:
> eth0      no wireless extensions.
> eth1      no wireless extensions.
> lo        no wireless extensions.
>
> So what is the correct procedure to setup the routing table entry.
>
> 2) Without trying setup the routing table entry but using the command 
> "node.net.w0.gateway = "11.0.0.1", I tried the experiment anyway, 
> however, the node5-8 and 7-6 never startup.
> Actully, during my experience on the grid, sometimes, I just cannot 
> start particular nodes by all means, (wget command and nodehandler), 
> therefore, even the "hello world" example cannot run then.
> Anyone have similar experience?
>
> thx for attention.
>
> rgds,
> Yang
>
>


--
Zhibin Wu
Graduate Research Assistant
WINLAB, Rutgers University
Technology Centre of New Jersey
671 Route 1 South
North Brunswick, N.J. 08902-3390
Phone: 732-932-6857 x653
Fax:   732-932-6882