Patent ID: 8788856
Filing Date: 2014-07-22
Classification: G06F,G11C,Y02D

Abstract:
1. A control apparatus, comprising: a first data storage unit storing data representing whether or not transition to an energy-saving state is prohibited, for each of a plurality of memory blocks in a memory device, wherein power control is carried out for each of the plurality of memory blocks; a second data storage unit storing, for each of a plurality of threads of a program, an identifier of the thread in association with the number of times that access by the thread to a memory block that is in the energy-saving state is requested; and a first controller that increments the number of times which is stored in the second data storage unit and is associated with an identifier of a requesting source thread of a memory request, upon detection that a memory block including an access destination of the memory request received from a processing unit is in the energy-saving state, and sets data representing that the transition to the energy-saving state is prohibited in the first data storage unit for the memory block including the access destination of the memory request upon detection that the number of times after incrementing exceeds a threshold.