1. An integrated circuit (IC) comprising: first and second groups of reconfigurable circuits,each reconfigurable circuit of the first group for performing a plurality of operations at a first reconfiguration rate, each reconfigurable circuit of the second group for performing a plurality of operations at a second reconfiguration, wherein the first reconfiguration rate is different than the second reconfiguration rate, wherein each reconfigurable circuit has a plurality of sets of storage elements that store a plurality of configuration data sets; and for each reconfigurable circuit, a set of configuration retrieval circuits for iteratively reading, in a looping manner, different sets of storage elements of the reconfigurable circuit in order to retrieve configuration data sets for reconfiguring the reconfigurable circuit.