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SCHEDULE: NOV 16-21, 2014
When viewing the Technical Program schedule, on the far righthand side is a column labeled "PLANNER." Use this planner to build your own schedule. Once you select an event and want to add it to your personal schedule, just click on the calendar icon of your choice (outlook calendar, ical calendar or google calendar) and that event will be stored there. As you select events in this manner, you will have your own schedule to guide you through the week.
Power Shifting Opportunities on BG/Q Using Memory Throttling
SESSION: Poster Reception
EVENT TYPE: Posters
TIME: 5:15PM - 7:00PM
AUTHOR(S):Bo Li, Edgar A. Leon
ROOM:New Orleans Theater Lobby
ABSTRACT:
Power and energy efficiency are major concerns for future exascale systems. Achieving the expected levels of application performance in these power-constrained systems will be challenging. Thus, it is important to understand how an application utilizes power throughout its different phases in order to maximize performance under the operating power budget. The goal is to shift power to the resources on the application’s critical path on a code-region basis. In this project, we identify power shifting opportunities for LULESH and pF3D, two applications from Lawrence Livermore National Laboratory. Using a linear regression model to predict the minimum memory speed without affecting performance, we dynamically throttle the memory system on a per-region or per-kernel basis. The results from an IBM Blue Gene/Q system show that we can save a significant amount of dynamic power at a marginal performance cost. Resources on the critical path could use this power to improve application performance.
Chair/Author Details:
Bo Li - Virginia Polytechnic Institute and State University
Edgar A. Leon - Lawrence Livermore National Laboratory
Click here to download .ics calendar file
