Multi-core processing device and power consumption control method thereof

Abstract

The embodiment of the invention discloses a multi-core processing device and a power consumption control method thereof. The device obtains the workload of each of one or more single-instruction multi-thread processing units in a power consumption adjustment period through a power consumption control unit, and judges whether the workload of each of the one or more single-instruction multi-thread processing units in the power consumption adjustment period is smaller than a power consumption adjustment threshold value or not; when the working load of any one single-instruction multi-thread processing unit in one or more single-instruction multi-thread processing units in one power consumption adjusting period is smaller than a power consumption adjusting threshold value, at least part of thread bundles in the any one single-instruction multi-thread processing unit are indicated to execute a power consumption adjusting instruction; therefore, the workload of any single-instruction multi-thread processing unit is increased. According to the embodiment of the invention, the multi-core processing device can be ensured to maintain relatively stable current and voltage during an effective working period, and the problem of voltage prompt drop in the multi-core processing device is reduced, so that the overall power consumption of a chip is reduced, and the processing frequency and performance are improved.

Description

technical field [0001] The present application relates to the field of processor power management, in particular, to a multi-core processing device and a method for controlling power consumption thereof. Background technique [0002] Currently, a serious voltage droop problem occurs in multi-core processing chips such as CPU and GPU. In a multi-core processing chip, multiple or even all processing cores are often waiting for the same data or instruction. When all processing cores enter a dormant state, the chip workload will drop sharply and the voltage will rise sharply; once waiting for a certain clock After a cycle, data or instructions are returned to all processing cores simultaneously within a predetermined clock cycle, and all processing cores will enter the highest workload within a predetermined clock cycle, the current rises sharply in a short time, and the voltage drops sharply in a short time, This phenomenon is called the voltage droop problem. The voltage dro...

AI Technical Summary

Problems solved by technology

However, the post-event feedback control method can easily miss the time point when feedback is needed, and cannot effectively reduce the voltage drop problem of super-large chips; a large number of capacitors will lead to capacitor packaging problems; and multi-core asynchronous circuits with different frequencies are complicated to design , each processing core has a huge number of connections, occupies a large area, and requires extremely high engineering realization

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