Re: Must use C++ ? OTcl is also enough ?

[Frank Chu <frankchu_ns@yahoo.com>]

Thanks, John,

  I understand more about it now after reading the NS
doc these days.  If these experiences can be written
into next version of NS Doc, that will be very helpful
for beginners to estimate workload.

Thanks a lot!

Frank

--- John Heidemann <johnh@ISI.EDU> wrote:
> On Fri, 17 Sep 1999 10:03:38 PDT, Haobo Yu wrote: 
> >Here is my 1 cent: you use C++ if you want
> >- to manipulate packets
> >- to do large simulation with memory constraint
> >- smaller runtime
> >
> >- Haobo
> >
> >(OR you are a C++ fun and hate the hacky ad-hockey
> otcl.)
> 
> 
> Haobo has provided some very good rules of thumb.
> 
> I'd add:
> 	- use OTcl if you can do what you want from
> existing C++ objects
> 
> 	- use C++ if you have to change the behavior of an
> existing
> 		C++ object
> 
> For example, links are OTcl objects that assemble
> delay, queueing, and
> possibly loss modules.  If your experiment can be
> done with those
> pieces, great.  If instead you want do something
> fancier (a special
> queueing dicipline or model of loss), then you'll
> need a new C++
> object.
> 
>    -John Heidemann
> 
> 
> >
> >On Fri, 17 Sep 1999, Frank Chu wrote:
> >
> >> 
> >> Very much appreciate if anyone can answer this
> >> question.
> >> 
> >> I want to do some simulation in which I will need
> to
> >> inherit agents of queue management (including
> >> dropping), transmission (including rate control),
> and
> >> traffic aggregation.  The simulation will not be
> too
> >> complex.  I saw many people use C++ in their code
> even
> >> the simulation is not complex.  According to your
> >> experiences, apart from the purpose that their
> code
> >> can be included into ns, is there anything (any
> hidden
> >> facts?) require they must use C++ ?  I mean, can
> I
> >> just use OTcl if I don't plan my code included
> into ns
> >> ?
> >> 
> >>   The reason that I have such a question is that
> I
> >> didn't compiled and installed ns successfully on
> my
> >> Unix, but I got a copy of binary code of ns
> running ok
> >> on my machine, so I think probably I can only use
> OTcl
> >> to write my simulation code.
> >> 
> >> Best,
> >> Frank
> >> 
> >>
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> >
> >
> 

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