Peak power management for processing units

A method, comprising:

• receiving, by a first power estimate accumulator circuit of a peak power manager, one or more power estimates associated with one or more subsystems;
• generating, by the first power estimate accumulator circuit, a first accumulated power estimate;
• storing, using a first-in first-out (FIFO) storage circuit of the peak power manager, a plurality of first accumulated power estimates associated with a plurality of clock cycles corresponding to a moving time interval window;
• accumulating, by a second power estimate accumulator circuit of the peak power manager, the plurality of first accumulated power estimates to generate a second accumulated power estimate;
• comparing the second accumulated power estimate with a threshold power;
• generating a control signal to control one or more events at the one or more subsystems in response to the second accumulated power estimate satisfying a condition associated with the threshold power;
• receiving, by a leakage consumption accumulator circuit of the peak power manager, one or more leakage consumptions from the one or more subsystems;
• generating, by the leakage consumption accumulator, a total leakage consumption;
• comparing the total leakage consumption with one or more leakage thresholds, wherein the one or more leakage thresholds are based on a number of the one or more subsystems;
• and
• determining the threshold power for the peak power manager based on the comparison.

A non-transitory computer-readable medium storing instructions that, when executed by a processor, cause the processor to perform operations comprising:

• receiving one or more power estimates associated with one or more subsystems;
• generating a first accumulated power estimate from the one or more power estimates over a clock cycle;
• storing a plurality of first accumulated power estimates associated with a plurality of clock cycles corresponding to a moving time interval window;
• accumulating the plurality of first accumulated power estimates to generate a second accumulated power estimate over the plurality of clock cycles corresponding to the moving time interval window;
• comparing the second accumulated power estimate with a threshold power;
• generating a control signal to control one or more events at the one or more subsystems in response to the second accumulated power estimate satisfying a condition associated with the threshold power;
• receiving one or more leakage consumptions from the one or more subsystems;
• generating a total leakage consumption;
• comparing the total leakage consumption with one or more leakage thresholds, wherein the one or more leakage thresholds are based on a number of the one or more subsystems;
• and
• determining the threshold power based on the comparison.