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A Systematic Approach for the Characterization of Performance Variability

MCS Seminar
Tom Cornebize, Grenoble University
December 15, 2017 10:30AM to 11:30AM
Building 240, Room 4301

Abstract: Production high-performance computing systems are becoming increasingly complex, both in terms of hardware and software. As a result, applications deployed on such systems experience performance variability (e.g., two executions of the same application with the same parameters will not take the same time).

To provide a better understanding of this performance variability across all its dimensions, we present a systematic approach to identify the different sources of variability and quantify their contribution to the observed variations. We illustrate this approach with early results on a study of multi-threaded implementations of dgemm.