..., a tool to generate commands for the simulation model to run, and to collect results afterwards will be needed. jEPlus has been developed as such a parametric tool for EnergyPlus.
To see jEPlus in action, check out this video: http://youtu.be/jBA7Q7npNK4
The source code of the jEPlus project is now hosted on GitHub: https://github.com/jeplus/jEPlus/