ACES and Cray Collaborate on Advanced Power Management for Trinity

The motivation for power and energy measurement and control capabilities for High Performance Computing (HPC) systems is now well accepted by the community. While technology providers have begun to deliver some capabilities in this area, interfaces to expose these features are vendor specific. The need for a standard way to leverage these emerging capabilities, now and in the future is clear. To address this need, the Department of Energy funded an effort to produce a Power application programming interface (API) specification for High Performance Computing systems with the goal of contributing this API to the community as a proposed standard for power measurement and control. In addition to the open publication of this standard an Advanced Power Management Non-recurring Engineering project has been initiated with Cray Inc. with the intention of advancing capabilities in this area and delivering them on a leadership class platform. We will detail the collaboration established between the Alliance for Computing at Extreme Scale (Sandia Laboratories and Los Alamos Laboratory) and Cray and the portions of the Power API that have been selected for the first production implementation of the standard. Keywords-power monitoring; power control; energy efficiency; power measurement;