...some information about VisualSimTM
VisualSim is a multi-domain, performance analysis and architectural exploration tool, based on the Ptolemy II simulation engine from UC Berkeley.
The VisualSim competitive edge:
Simulation and Data type Polymorphic (single event calendar common to all domains)
Fastest available mixed mode simulation
Simulations easily published for viewing and execution with open source/free software
No license fee to view and execute published materials
Platform independent (Solaris, HP/UX, Windows, Linux & Mac OS/X)