Abstract: A processor including a coarse grained array including a plurality of processing elements, a central register file including a first plurality of register files, a shadow central register file including a second plurality of register files, each of the second plurality of register files corresponding to each of the first plurality of register files included in the central register file, and a plurality of shadow register files, each of the plurality of shadow register files corresponding to each of a third plurality of register files included in predetermined processing elements selected from the plurality of processing elements.