Energy Aware Race to Halt: A Down to EARtH Approach for Platform Energy Management

The EARtH algorithm finds the optimal voltage and frequency operational point of the processor in order to achieve minimum energy of the computing platform. The algorithm is based on a theoretical model employing a small number of parameters, which are extracted from real systems using off-line and run-time methods. The model and algorithm have been validated on real systems using 45nm, 32nm and 22nm Intel® Core processors. The algorithm can save up to 44% energy compared with the commonly used fixed frequency policies.