The present disclosure relates to a system and method for modeling an electronic circuit design. Embodiments may include receiving, at one or more computing devices, an electronic circuit design. Embodiments may also include partitioning, at a graphical user interface configured to display at least a portion of the electronic circuit design, at least one portion of the electronic circuit design into one or more sub-zones and generating, at the graphical user interface, one or more ports at each interface between one or more sub-zones. Embodiments may further include receiving a selection for an electromagnetic (EM) solver for each of the one or more sub-zones. Embodiments may also include modeling each of the one or more sub-zones.