ECE Graduate Seminar
<p> The Electrical and Computer Engineering Department cordially invites you to attend the following seminar:</p> <p> </p> <p> Automatic Runtime System for Energy Saving in Parallel Applications</p> <p> </p> <p> by</p> <p> Dr. Masha Sosonkina</p> <p> Department of Modeling, Simulation &</p> <p> Visualization Engineering</p> <p> Old Dominion University</p> <p> </p> <p> Friday, October 19, 2012</p> <p> 3:00 p.m. KH 224</p> <p> Host: Dr. Oscar González</p> <p> </p> <p> High-performance computing has always been about efficiency of large-scale applications and supercomputing platforms. Nowadays, both energy and power consumption have also become critical concerns owing to their effect on operating costs and failure rates of supercomputers. Modern processors provide techniques, such as Dynamic Voltage and Frequency Scaling (DVFS) and CPU Clock Modulation (Throttling), which modify their performance and power consumption at the runtime to save energy. Without careful application, however, DVFS and throttling may cause a significant performance loss due to system overhead.</p> <p> </p> <p> In this talk, I describe a novel runtime system that maximizes energy saving in parallel applications. Specifically, it predicts their communication phases and applies frequency scaling by considering both the CPU offload which provided by the network-interface card, and the architectural stalls. I will present some experiments performed on NAS parallel benchmarks and on real-world applications in the areas of molecular dynamics and partial differential equations, which exhibit energy savings of up to 14% with little performance loss.</p> <p> </p> <p> </p>
Posted By: Linda Marshall
Date: Mon Oct 15 11:18:26 EDT 2012