Re: [uml-devel] 2.5 ? Event-driven simulation ?

[Greg D. <gre...@en...>]

Hi Werner,

Our Team has been integrating UML and the Discrete Event Simulator
OMNet++ for data networking applications.

We have a paper in submission to Mobicom which you may be interested
in. (Please email me if you need a copy).

We have had some success in hijacking the clock for synchronizing
the UML with the event clock from the discrete event simulator.

Greg Daley

Werner Almesberger wrote:
> Hi,
> 
> I'm looking for a nice way for bringing my traffic control simulator
> tcsim (tcng.sourceforge.net) to 2.5, and using UML for this looks like
> a promising approach.
> 
> tcsim currently copies some of the networking stack from the kernel,
> and replaces various infrastructure functions (netlink, timers, etc.)
> with its own code. Then, you can run the "real" kernel code in an
> event-driven simulator. A few problems with this approach:
> 
>  - the editing tcsim needs to apply is somewhat fragile (okay, to be
>    honest, it's one of my ugliest hacks so far :-)
>  - as a consequence of this, porting it from 2.4 to 2.5 would be
>    feasible but messy
>  - there are a lot of things that tcsim currently doesn't include,
>    and that would be nice to have in a network simulator, e.g. full
>    routing, TCP, etc.
> 
> UML has all this, and the main missing feature seems that it runs in
> real time instead of simulated time, so I'd have to replace
> everything that touches time. I haven't studied the UML code yet,
> but this change should be reasonably simple.
> 
> First question: since this is a fairly obvious extension, has it
> already been done ?
> 
> Now, one of my main goals is to be able to use 2.5. As far as I can
> see, UML is currently 2.4 only. What are the plans (if any)
> regarding 2.5 ?
> 
> Thanks,
> - Werner (not subscribed to UML-devel, but reading the archive)
>