USING TEMPERATURE MARGIN TO BALANCE PERFORMANCE WITH POWER ALLOCATION

摘要

A method and apparatus using temperature margin to balance performance with power allocation. Nominal, middle and high power levels are determined for compute elements. A set of temperature thresholds are determined that drive the power allocation of the compute elements towards a balanced temperature profile. For a given workload, temperature differentials are determined for each of the compute elements relative the other compute elements, where the temperature differentials correspond to workload utilization of the compute element. If temperature overhead is available, and a compute element is below a temperature threshold, then particular compute elements are allocated power to match or drive toward the balanced temperature profile.

主权项

1. A power management system, comprising:
a plurality of compute units, each compute element having a temperature profile; a microcontroller configured to use temperature measurements of each of the plurality of compute units to infer utilization for each of the plurality of compute elements for a given workload; and the microcontroller further configured to allocate power to at least one of the plurality of compute elements on a condition that the temperature measurement for at least another of the plurality of compute elements is below a temperature threshold, wherein the temperature threshold is based on a temperature of each compute unit and drives toward a temperature profile for an optimal performance for each compute element for the given workload.