Queueing Petri Net Modeling Environment / News: Recent posts

A minor bugfix release for QPME (Queueing Petri net Modeling Environment) is now available. Version 2.0.1 can be downloaded from here.

The following issues are fixed in this version:
[#2] Internal error - null pointer exception
[#3] Masked nullPointerException after deletion of a place
[#4] Nullpointer exception after color removal from a subnet
[#5] Scripts for batch execution missing in distribution
[#6] NPE when entering a decimal value with "," as separator char ... read more

In response to several requests from the QPME community, a publicly accessible repository containing the complete source-code of QPME is now available. The repository is hosted on sourceforge.net like many other parts of the QPME project. In order to access the source-code you need a Git client (e.g. [1] or a graphical client such as TortoiseGit [2]). Then you can run “git clone ssh://sspinner@git.code.sf.net/p/qpme/code qpme-code” to obtain a local working copy of the repository with which you can work. Alternatively, the source-code is also available as a self-contained download bundle here. Any patches from the QPME community providing bug-fixes or enhancements are always welcome and will be considered for inclusion in the next QPME release.... read more

A tutorial by the Descartes Research Group on Queueing Petri Nets presented at the ICPE 2012 International Conference is now available for download.

A tutorial by the Descartes Research Group on Queueing Petri Nets was presented by Samuel Kounev at the 3rd ACM/SPEC International Conference on Performance Engineering (ICPE 2012) http://icpe2012.ipd.kit.edu/ on April 22 in Boston, USA.

The tutorial provides:
1. a brief introduction to the Queueing Petri Net (QPN) modeling formalism providing references and links for further reading,
2. an overview of modeling case studies with QPNs in different application domains,
3. an introduction of relevant tools with focus on the Queueing Petri net Modeling Environment (QPME) developed at KIT.... read more

A major new release of QPME (Queueing Petri net Modeling Environment), version 2.0, is now available under the terms of the Eclipse Public License (EPL) v1.0 (http://www.eclipse.org/legal/epl-v10.html).

QPME (Queueing Petri net Modeling Environment) is a tool for stochastic modeling and analysis based on the Queueing Petri Net (QPN) (http://ls4-www.cs.tu-dortmund.de/QPN/) modeling formalism. Queueing Petri Nets are a combination of conventional queueing networks and stochastic Petri nets providing increased expressiveness and thus making it possible to model systems at a higher degree of accuracy. The development of the tool started in 2003 at the Technische Universität Darmstadt and was continued at the University of Cambridge from 2006 to 2008. Since 2008, QPME is being developed and maintained by the Descartes Research Group (http://descartes.ipd.kit.edu/) at Karlsruhe Institute of Technology (KIT). The first version was released in January 2007 and since then the tool has been distributed to more than 120 universities, companies and research institutes worldwide.... read more