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Powersched(Hawk)

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Power Management (Powersched)

Powersched

Powersched (HPE) proposes a reliable, efficient, and transparent mechanism to keep a HPC system under a power cap. The tool aims to increase the energy efficiency of available resources by enabling power capping based on an application-specific, energy-optimized runtime environment. The power capping is governed by the Golden-Section-Search (GSS) optimization of a given metric (a variant of the Energy-Delay-Product) and will adapt to different application phases. Depending on the job characteristic we aim for an improvement in energy efficiency of order 20% with a moderate performance impact (or gain) of order 5%.

A summary is included below.

Golden Section Search (GSS)

GSS.png

Dynamic power capping (per socket). As a corollary you might observe a relaxation period especially during startup and in changing application phases.

GSS Full.png

Overview and Architecture

Media:HLRS_Workshop_Powersched_GSS.pdf