The International Conference for High Performance Computing, Networking, Storage and Analysis
Framework for Optimizing Power, Energy, and Performance.
Authors: Prasanna Balaprakash (Argonne National Laboratory), Ananta Tiwari (San Diego Supercomputer Center), Stefan Wild (Argonne National Laboratory)
Best Poster Finalist
Abstract: Code optimization in the high-performance computing realm has traditionally focused on reducing execution time. The problem, in mathematical terms, has been expressed as a single objective optimization problem. The expected concerns of next-generation systems, however, demand a more detailed analysis of the interplay among execution time and other metrics. Metrics such as power, performance, energy, and resiliency may all be targeted together and traded against one another. We present a multi-objective formulation of the code optimization problem. Our proposed framework helps one explore potential tradeoffs among multiple objectives and provides a significantly richer analysis than can be achieved by treating additional metrics as hard constraints.
We empirically examine a variety of metrics, architectures, and code optimization decisions and provide evidence that such tradeoffs exist in practice.