SCHEDULE: NOV 12-18, 2011

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Performance Modeling for Systematic Performance Tuning

SESSION: State of the Practice - Performance II

EVENT TYPE: State of the Practice

TIME: 2:30PM - 3:00PM

SESSION CHAIR: Yunquan Zhang

AUTHOR(S):Torsten Hoefler, William Gropp, Marc Snir, William Kramer

ROOM:TCC 202

ABSTRACT:
The performance of parallel scientific applications depends on many factors which are determined by the execution environment and the parallel application. Especially on large parallel systems, it is too expensive to explore the solution space with series of experiments. Deriving analytical models for applications and platforms allow estimating and extrapolating their execution performance, bottlenecks, and the potential impact of optimization options. We propose to use such "performance modeling" techniques beginning from the application design process throughout the whole software-development cycle and also during the lifetime of supercomputer systems. Such models help to guide supercomputer system design and re-engineering efforts to adopt applications to changing platforms and allow users to estimate costs to solve a particular problem. Models can often be built with the help of well-known performance-profiling tools. We discuss how we successfully used modeling throughout the proposal, initial testing, and beginning deployment phase of the Blue Waters supercomputer system.

Chair/Author Details:

Yunquan Zhang (Chair) - Lab. of Parallel Computing, ISCAS

Torsten Hoefler - University of Illinois at Urbana-Champaign

William Gropp - University of Illinois at Urbana-Champaign

Marc Snir - University of Illinois at Urbana-Champaign

William Kramer - University of Illinois at Urbana-Champaign

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The full paper can be found in the ACM Digital Library