SCHEDULE: NOV 16-21, 2014

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Adaptive Power Efficiency: Runtime System Approach with Hardware Support

SESSION: Doctoral Showcase - Dissertation Research II

EVENT TYPE: Doctoral Showcase

TIME: 2:45PM - 3:00PM

SESSION CHAIR: Karen L. Karavanic

Presenter(s):Ehsan Totoni

ROOM:386-87

ABSTRACT:

Power efficiency is an important challenge for the HPC community, demanding major innovations. We propose novel techniques using a cross-layer approach to improve power efficiency. We use extensive application-centric analysis of different architectures to design automatic adaptive runtime system (RTS) techniques that save significant power. These techniques exploit common application patterns and only need minor hardware support. The application's pattern is recognized using Formal Language Theory to predict its future and adapt the hardware appropriately.

I will discuss why some system components such as caches and network links consume extensive power disproportionately for common HPC applications, and how a large fraction of power consumed in caches and networks can be saved using our approach automatically. In these cases, the hardware support the RTS needs is the ability to turn off ways of set-associative caches and network links.

Chair/Presenter Details:

Karen L. Karavanic (Chair) - Portland State University

Ehsan Totoni - University of Illinois at Urbana-Champaign

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