1. A computer program product comprising a computer usable storage medium storing computer usable program code for business process model simulation, the computer program product comprising: computer usable program code for loading a business process model for simulation; computer usable program code for designating a decision node in the business process model as a master decision node and linking another decision node in the business process model as a slave decision node to the master decision node; computer usable program code for simulating the master decision node to select an output pin and storing the selected output pin in association with the master decision node; and, computer usable program code for applying the selected output pin in the slave decision node when arriving at the slave decision node during the simulation without simulating the slave decision node.