About Distributed Simulation Packages 
The RiverSMART Distributed Simulation Packages allow you to distribute subsets of scenarios from a single study across multiple computers or virtual machines in a cloud computing environment, so you can run simulations in parallel, reducing overall study time. 
A 
master study is used to divide the study scenarios into 
simulation package files. These package files are then transferred to 
simulation computers, where RiverSMART is run in simulate-only mode. Results files are then combined in the master study for post-processing. See 
Distributed Simulation Package Process for details.