1. A method for storing, in a computer readable medium, a data structure containing wire routing information of an integrated circuit, said method comprising: mapping said integrated circuit into memory locations of said medium as a wiring plane having a plurality of data points arranged in a grid, with each of said plurality of data points having state information associated therewith, said state information including a plurality of attributes; and associating subsections of said grid with sets of said memory locations in said computer readable medium to form a plurality of tiles so that a sub-portion of said data points associated with one of said plurality of tiles have common attributes.