Horizon is a parallel discrete event simulation extension build on top of the OMNeT++ simulation framework. Based on the modeling paradigm of "expanded events", Horizon allows to run discrete event simulation models in parallel on multi-processor machines. More information on the concepts underlying Horizon is available in our MASCOTS 2010 publication. Additional insight into implementation details gives a recent publication at the OMNeT++ workshop 2011.
To download the code of Horizon, visit the sub-project Horizon Simulation Framework.
Example models illustrating the modeling paradigm of Horizon can be found in the Horizon Sample Models subproject.