1. A method, in a data processing system, for controlling a fidelity of a simulation of a system, comprising: receiving a model of the system, wherein the model of the system comprises a plurality of individual components of the system; assigning a component in the plurality of individual components to be a fidelity center, wherein the fidelity center has a highest possible associated fidelity value; assigning a fidelity value to each other component in the plurality of individual components based on an affinity of the other component to the fidelity center; and simulating the system based on assigned fidelity values to the components in the plurality of individual components.