SYSTEMS AND METHODS FOR POWER OPTIMIZATION USING THROUGHPUT FEEDBACK

摘要

A voltage and frequency scaling system for a processor is provided that may be implemented in dedicated logic or in software. The various voltage and frequency settings for the processor comprise a set of performance settings. The system includes a profiler module that maps each performance setting to a workload range for the processor. The profiler module also maps each workload range to a profiled throughput for the processor. Using a predicated average throughput from the mapping, the voltage and frequency scaling system advantageously selects from the performance settings and commands the processor to operate according to the selected performance setting.

主权项

1. A voltage and frequency system for a processor operable according to a selection from a set of performance settings, comprising:
a profiler module configured to determine a mapping relating each performance setting to a corresponding workload range for the processor and relating each workload range to a corresponding profiled throughput for the processor; and an optimizer module configured to determine whether the selection should be changed with regard to a current frame in a series of frames and to command the processor to operate in a subsequent frame according to another selection from the performance settings responsive to a comparison of a predicted average throughput for the subsequent frame to a desired average throughput, wherein the optimizer module is further configured to determine the predicted average throughput using the mapping.