RE: [Dsol-java] simulator usage questions

[Houten, Stijn-P. v. <s.p...@tb...>]

Hi Mark,

Yes, it is very well possible to run dsol within a J2EE container. I
don't recall having problems with multiple threads and dsol in
combination with JBOSS. Of course, multiple ways exist to make a
simulator (or animator in this case) remotely available. Attached you
find three classes which together provide you with the idea of making an
animator remotely accessible, even without using JBOSS. However, you
could also let the classes that implement the SessionBean interface and
your EJBObject interface implement/extend the RemoteAnimatorInterface.
In the latter, you should make sure to delegate for example the
simulator.stop() method to the animator which is then an attribute of
the SessionBean.=20

Hope this helps, best regards,

Stijn-Pieter van Houten.

-----------------------------------------------

Ir. S.P.A. van Houten,     Researcher

Delft University of Technology, the Netherlands

Faculty of Technology, Policy and Management

Systems Engineering Group


Jaffalaan 5, 2628 BX Delft, the Netherlands

tel. (+31 |0) 15 2788545

fax. (+31 |0) 15 2783429

mob. (+31 |0) 6 48930745

mailto:S.P...@TB...

http://www.tbm.tudelft.nl/webstaf/stijnh

-----------------------------------------------
=20

-----Oorspronkelijk bericht-----
Van: dso...@li...
[mailto:dso...@li...] Namens Mark Stacey
Verzonden: dinsdag 19 april 2005 13:27
Aan: dso...@li...
Onderwerp: [Dsol-java] simulator usage questions

Hi,

I'm looking to run your simulation software in a J2EE container,
specifically JBoss. I was wondering if anyone has any experience with
this before? The J2EE spec doesn't allow threads to be created on the
fly within the container, and by the looks of it, the simulations are
run multi-threaded. Am I correct in saying this or is it possible to
switch off thread spawning?

I'm also curious as to whether it is possible to detect if variations in
results reduce to a minimum. Take for instance the M/M/1 queue
simulation.=20
The d(n) chart approaches 0.717 after about 800,000 units, but after
that, there is no difference to these figures. Is it possible to
automatically detect this and stop the simulation going further?

thanks!

Mark


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