[ndnSIM] Zipf-Mandelbrot Patch for ndnSIM

[Xiao yan Hu]

Hi,

Thanks for your reply.
And would you pls answer me another question.
What if I used several ns3::RandomVariable at different places of my
simulation, e.g., Besides in consumer, one in forwarding strategy. Would
that specifying --RngRun in command line works for all them?

Thanks,
Xiaoyan


On Wed, Apr 24, 2013 at 2:49 AM, Alex Afanasyev <
alexander.afanasyev at ucla.edu> wrote:

> Hi!
>
> Using srand is not an ideal way to produce different random results in the
> simulator, as the simulator suppose to produce exactly the same output
> based on input parameters, one of which is RngRun.
>
> The link that Xiaoke posted explains everything about randomization in
> NS-3.
>
> What I'm usually doing is adding a standard command line argument to the
> simulation run, e.g., --RngRun=2  for the second run and --RngRun=3 for the
> third and so on (RngRun is not exactly a seed and you don't need to
> "randomize" it, as you normally suppose to do with srand).   To use this
> standard argument, you need to have   "CommandLine cmd; ... cmd.Parse
> (argc, argv);" present in your code.
>
> ---
> Alex
>
>
> On Apr 23, 2013, at 8:15 AM, Xiao yan Hu <xhbreezehu at gmail.com> wrote:
>
> Thank you. And I just found that if I call srand() in the main, some
> randomness generates as well. But your reference should be better.
>
>
> On Tue, Apr 23, 2013 at 10:42 PM, Xiaoke Jiang <shock.jiang at gmail.com>wrote:
>
>> I think you have to set different seed for in order to generate different
>> traffic pattern.
>>
>> set seed: http://www.nsnam.org/docs/manual/html/random-variables.html
>> have a try!
>>
>> thanks
>>
>> My Regards,
>> ------------------------------
>> Xiaoke Jiang （蒋小可）
>>
>> Ph.D Candidate,
>> Dept. of Computer Science and Technology,
>> Tsinghua University, P. R. China
>>
>> On Apr 23, 2013, at 10:40 PM, Xiao yan Hu <xhbreezehu at gmail.com> wrote:
>>
>> Hi Xiaoke and Alex,
>>
>> I used ndn-zipf-mandelbrot.cc as the consumer in my simulations.
>> It is cool and thank you guys.
>> But I found that the app generates exactly the same Interest traffic for
>> different runs of the simulations.
>> Would you please tell me if there is a way that some randomness can be
>>  added in each run of the generated Interest traffic?
>>
>> Thanks,
>> Xiaoyan
>>
>>
>>
>>
>>
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