[ns] Bug with wireless simulations
val_larim at yahoo.ca
Thu Jun 2 06:07:58 PDT 2005
I have now another bug with ns when running wireless
simulations. I have already sent a mail about this,
but no one seems to have a solution.
I really don't know what to do about this as I get no
error message ! The simulation apparently stops
(nothing more is written in trace file, and scheduler
do stop) while Ns keeps on running !!!
Could you help me about this ? Thanks you very much !
--- Padmaparna Haldar <haldar at ISI.EDU> wrote:
> Hi Valerie,
> The error message is not a bug. The event UID
> is an unique
> (negative) number for
> every event scheduled (within the scheduler) and is
> set to positive when
> the event is scheduled. The scheduler unsets it
> again once the event is
> executed. So this error could be raised if you tried
> to reschedule an
> event with the same UID without cancelling the event
> or other cases as
> well. You need to step thru the debugger and find
> out why and where the
> UID is being invalidated. The scheduler is
> implemented in
> common/scheduler.cc and the error is called from
> Hope this helps,
> On Tue, 31 May 2005,
> Valerie Alandzi wrote:
> > Hi
> > I am doing some simulations of cbr traffic in a
> > wireless LAN with Ns-2.27. I have implemented my
> > routing protocol, and everything works fine, but
> > I run simulations with 50 nodes and 30 cbr
> sources, I
> > get the error message "Scheduler: Event UID not
> > valid!". I saw many mails about this bug, but no
> > solution !
> > Can anyone help me? Thank you very much !!
> > Regards,
> Be true to your work, your word, and your friend.
> Padmaparna Haldar
Mobile Computing and Networking Research Laboratory,
Ecole Polytechnique de Montréal
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