[ndnSIM] Zipf-Mandelbrot Patch for ndnSIM

[Saran Tarnoi]

Hi Alex,

Thanks a lot for your hint. It helps me very much.
I have fixed the problem.
However, I didn't put "SetNumberOfContents (m_N);" in SetQ function because
I don't clearly understand the logic of code.
Anyway, it works properly now according to my sample simulation.

Would you kindly double check it?

Thanks,
Saran


2013/2/14 Alex Afanasyev <alexander.afanasyev at ucla.edu>

> Hi Saran,
>
> Unfortunately, the problem has been finally solved yet.  What is happening
> (
> https://github.com/shockjiang/ndnSIM/blob/master/apps/ndn-consumer-zipf-mandelbrot.cc)
> is that "q" and "s" parameters are only activated when
> "SetNumberOfContents" method is called (either directly or indirectly via
> NS-3 attribute system).   When "q" or "s" is updated through NS-3 attribute
> system, this is not resulting in any change with rank or power of the Zipf
> distribution (not until somebody calls SetNumberOfContents again).
>
> To "fix" the problem, we just need to implement functions to set "q" and
> "s" (and replace accessors on
> https://github.com/shockjiang/ndnSIM/blob/master/apps/ndn-consumer-zipf-mandelbrot.cc#L53 and
> on
> https://github.com/shockjiang/ndnSIM/blob/master/apps/ndn-consumer-zipf-mandelbrot.cc#L57 to
> use these functions) and in part of these functions there should be a
> call SetNumberOfContents.
>
> Like
>
> void
> SetQ (double q)
> {
>    m_q = q;
>    SetNumberOfContents (m_N);
> }
>
> We will appreciate if you can spare some time to write this "fix".
>
> Thanks,
> Alex
>
> On Feb 12, 2013, at 6:24 PM, Saran Tarnoi <sarantarnoi at gmail.com> wrote:
>
> Hi Alex and Xiaoke,
>
> I have been following your code to better understand ndnSIM.
> Thank you so much for your effort to create and share the simulator and
> documentation.
>
> I am studying how various traffic characteristics affect a caching
> performance of a network.
> I have walked through zipf-mandelbrot code.
> There was a comment by Alex said that adding attributes "s" and "q" does
> not properly work.
> Do you already solve the problem in the latest patch?
> Or would you please tell me what the problem is? So that I may help you
> fix it.
>
> Thanks.
> Saran
> --
> Regards,
> Saran Tarnoi
> Graduate Student
> Department of Informatics
> The Graduate University for Advanced Studies (Sokendai)
> Tokyo, Japan
>  _______________________________________________
> ndnSIM mailing list
> ndnSIM at lists.cs.ucla.edu
> http://www.lists.cs.ucla.edu/mailman/listinfo/ndnsim
>
>
>


-- 
Regards,
Saran Tarnoi
Graduate Student
Department of Informatics
The Graduate University for Advanced Studies (Sokendai)
Tokyo, Japan
http://sarantarnoi.blogspot.jp<http://sarantarnoi.blogspot.jp/2012/11/my-profile.html>
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