ORBIT-USER: Question about Virtual Mobility Tutorial

[Arinto Murdopo]

Okie thank you.. yup, like what you stated above, sometimes there are few
nodes that still in on state although I have issued allOffSoft.

Thank you :D

arinto

On 2/21/07, Sanjit Krishnan Kaul <sanjitkaul at gmail.com> wrote:
>
>  What I meant was synchronizing the installation of click scripts across
> nodes that are part of your experiment. So it could also mean
> synchronization between the sender and the receiver but only as far as
> installation of click scripts is concerned.
>
>
>
> You could try integrating shell scripts that load the click scripts or you
> can have your own mechanism.
>
>
>
> allOffSoft should take 1 – 2 mins max. Fire the command again in case you
> see some nodes that have not switched off.
>
>
>  ------------------------------
>
> *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 6:23 AM
> *To:* orbit-user at winlab.rutgers.edu
> *Subject:* Re: ORBIT-USER: Question about Virtual Mobility Tutorial
>
>
>
> 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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