Re: [GridSim-users] how to create a peer to peer network in gridsim

[Jonathan M. <jon...@bs...>]

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Hi Geetha,

For instance, a topology with 3 routers router[A, B, C], with A connected with B
and C, and B, C connected as well:

3
routerA
routerB
routerC
routerA routerB 0.1 10 1500
routerA routerC 0.1 10 1500
routerB routerC 0.1 10 1500


If you write this on a file, for instance let's say
"/home/geetha/mynetwork.conf" you can use the following
java code example:


String path = "/home/geetha/mynetwork.conf";
LinkedList<Router> l = gridsim.util.NetworkReader.createFlow(path);


If you are not using the new version of GridSim, you can use
NetworkReader.createFIFO(path), but the simulation time increases exponentially
since this second function uses SimpleLink links which implies the creation of a
new entity object per network packet (in our example with MTUs = 1500, implies a
new object for every 1500 bytes transferred).


Regards,

	Jonathan



geetha jini escribió:
> Thank u for ur reply sir.
> Can u please provide me an example for defining our own network topology.
> Geetha.
> 
> --- On *Tue, 17/3/09, Jonathan Marti /<jon...@bs...>/* wrote:
> 
> 
>     From: Jonathan Marti <jon...@bs...>
>     Subject: Re: [GridSim-users] how to create a peer to peer network in
>     gridsim
>     To: "geetha jini" <cge...@ya...>
>     Cc: gri...@li...
>     Date: Tuesday, 17 March, 2009, 9:17 PM
> 
> 
> You cand define your own network topology in a simple plain text
> file such as:
> 
> #num of routers
> 5
> #router ids
> router1
> router2
> router3
> router4
> router5
> #router links defined between two of them
> #               bw(Gbps) delay(ms) (MTU)
> router1 router2 0.1 10.0 1500
> router1 router5 0.1 10.0 1500
> router2 router5 0.1 10.0 1500
> router2 router3 0.1 10.0 1500
> router4 router5 0.1 10.0 1500
> 
> Then, you can use the gridsim.util.NetworkReader class to initialize the
> topology (this class parses the file and creates the routers).
> 
> Finally you can attach resources and users to any of these routers.
> 
> Regards,
> 
>     Jonathan
> 
> PS: Use GridSim 4.2 with Flow links if you want to simulate
> data-intensive
> gridlets. Otherwise, the time to execute simulation of data
> transfers among
> resources, grows exponentially.
> 
> 
> 
> geetha jini escribió:
>> Hello,
> 
>> How to create a peer to peer network  with peers as grid resources and
>> grid users in gridsim?
> 
>> Regards,
>> Geetha.
> 
> 
> 
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- --
- -----------------------------------------------------------------------
Jonathan Martí Fraiz
Storage Systems Research Group  - Computer Sciences Department
Barcelona Supercomputing Center - Centro Nacional de Supercomputación
www   : http://www.bsc.es/StorageSystems
email : jonathan(dot)marti(at)bsc(dot)es
phone : (0034) 934054281
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