ORBIT-USER: Question about Virtual Mobility Tutorial

[Arinto Murdopo]

Okay, thank you.

By the way, what do you mean by synchronization? Does it mean
synchronization between sender and receiver?

I read from one of ORBIT publication that nodehandler application is used
for synchronization. In this case, I think I need to use integrate the shell
scripting codes (something like loading file, set the file status etc) into
ruby script. Is that correct? Please correct me if I'm wrong.

By the way, one more question, how long does it take to complete the process
of switching off all nodes in the main grid using allOffSoft in CMC command?

Thank you

arinto

On 2/20/07, Sanjit Krishnan Kaul <sanjitkaul at gmail.com> wrote:
>
>  Your understanding is mostly correct. A specific node will start
> switching as soon as the node's click script is installed on it (using the
> command click-install). By "switching" I mean processing packets as defined
> by the node's click script.
>
>
>
> Nodes don't wait for other nodes to install their click scripts. Incase
> you want them to start switching at the same time you have to ensure
> synchronization between the nodes.
>
>
>
> Hope that helps!
>
>
>
> PS: The command in the example says click-install mob*.click. The "*"
> means the click script downloaded to the node where you are running the
> click-install command and not all scripts. Also, in general you shouldn't
> install more than a click script on a node. If you do the last installed
> script will determine the switching rules the node follows and the rest will
> be ignored.
>
>
>
> Sanjit
>  ------------------------------
>
> *From:* owner-orbit-user at winlab.rutgers.edu [mailto:owner-
> orbit-user at winlab.rutgers.edu] *On Behalf Of *Arinto Murdopo
> *Sent:* Tuesday, February 20, 2007 3:11 AM
> *To:* orbit-user at winlab.rutgers.edu
> *Subject:* ORBIT-USER: Question about Virtual Mobility Tutorial
>
>
>
> Dear all,
>
> I have question regarding the Virtual Mobility Tutorial using spatial
> switching (http://www.orbit-lab.org/wiki/HowTo/virtualMobilitySS). Last
> statement of the last section as shown below:
>
>  *Running an experiment ¶<http://www.orbit-lab.org/wiki/HowTo/virtualMobilitySS#Runninganexperiment>
> *
>
>    - Image all grid nodes (VM nodes and the nodes mapped to mobile
>    nodes) with the image click-2.4.26-20051204.ndz.
>    - Upload the click files onto the grid nodes they correspond. The
>    file *loadFiles.sh* contains sample commands for the example
>    experiment.
>    - For *each* node install the click script. On nodes specified in
>    the VM<no>.txt(s) it is important that the ath0 interface is up.
>
> $ ssh root at nodex-y
>
> $ click-install mob*.click
>
>
>    - *The installation of the click script marks the beginning of
>    experiment on each node*.
>
> What does the last statement mean? Does it mean that the node start
> switching when we finish the installation all the click configuration files
> using *click-install*?
> When is the time actually the specific nodes start switching?
>
> Thank you
>
> Arinto
>
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