Aspects of the invention relate to simulation of circuits with repetitive elements. With various implementations of the invention, a circuit design for simulation is analyzed to derive information of memory-circuit device groups that comprise word-line-driven device groups. If the circuit design is hierarchically structured, the circuit design is flattened to device level but keep the memory-circuit device groups intact. The circuit design is then partitioned into a plurality of subcircuits for a simulation. During a transient simulation, whether an instance of a word-line-driven device group is activated is first determined. If activated, whether device model values exist for the word-line-driven device group at a voltage state associated with the activated instance is then determined. If they exist, the device model values are associated with the activated instance. If they do not exist, the device model values are computed for, stored for and associated with the activated instance.