Power control apparatus, electronic computer, and power control method

摘要

A power control apparatus includes a processor configured to collect first information related to operation of a performing unit configured to perform data processing and information related to operation of a bus configured to transfer data; determine an operating frequency and an operating voltage for the performing unit, based on the collected information; estimate based on the collected information, a period elapsing until the performing unit suspends operation and a period elapsing until the bus suspends operation; derive a discriminant that obtains a difference of total power consumption and power consumption pre-switching; and execute a switching of an operating frequency and an operating voltage of the performing unit, based on a value of the discriminant.

主权项

1. A power control apparatus comprising
a processor configured to: collect first information related to operation of a performing unit configured to perform data processing and second information related to operation of a bus configured to transfer data; determine an operating frequency and an operating voltage for the performing unit, based on the first information and the second information; estimate based on the first information and the second information, a first period elapsing until the performing unit suspends data processing that is being performed and a second period elapsing until the bus suspends data transmission that is being conducted; derive a discriminant that obtains a difference of total power consumption and power consumption pre-switching, the total power consumption being power consumed in a case of switching the operation of the performing unit based on the determined operating frequency and operating voltage plus power consumed during the estimated first and second periods; and
execute a switching of an operating frequency and an operating voltage of the performing unit, based on a value of the discriminant.