Energy Claims at Scale: Decreasing the Energy Demand of HPC Workloads at OS Level

The ever-increasing performance and power demand of HPC systems requires sophisticated approaches that improve energy-efficient job execution. Targeted goals such as the 20-MW limit for an exascale system, set by the Department of Energy (DoE), are not achievable with advances at hardware level only. Instead, it is inevitable to establish new concepts at system-software level. We propose a system software in which the operating system acquires a key position in the energy-reduction process. Our approach advocates heterogeneous hardware components-especially those that currently emerge from the embedded-system domain-to achieve both high performance and high energy efficiency.