PROCESSOR, INFORMATION PROCESSOR AND CONTROL METHOD OF PROCESSOR

摘要

A heat generation amount estimation unit(110) acquires the number of sub processors(200) currently in operation, acquires the current operating frequency, and estimates the amount of heat generation after a period ”t. A temperature control unit(120) estimates the temperature after the period ”t based on the current temperature input from a temperature sensor(400) and the amount of heat generation estimated, and compares it with a predetermined threshold temperature. If the predetermined threshold temperature is reached, the temperature control unit(120) acquires the number of sub processors(200) available in parallel after the period ”t from a task management unit(121), and consults a performance table(122) to determine which operation point to shift to. A sub processor control unit(130) and a frequency control unit(140) switch to the number of sub processors(200) in operation and the operating frequency accordingly. The performance table(122) lists possible operation points in order of performance.