POWER CONSUMPTION CONTROL METHOD IN MULTI-CORE CPU, POWER CONSUMPTION CONTROL PROGRAM, AND INFORMATION PROCESSING SYSTEM

摘要

When one of cores (11, 12) which have read a CPU power saving driver (41) can be shifted to a power saving mode (S01), the core (11) reports that to the other core (12) (S02) and then turns off the power supply to itself (S03). The core (12) which has received the report creates a suspend image of a region (23) dedicated to the core (11) on an SDRAM (2), stores the image in a bank (231) of the region (23) (S05), shifts the bank (231) to the self refresh mode, and turns off the power supply to the remaining bank (232) of the region (23) (S06).