Simulation of MPI applications with time-independent traces

Abstract : Analyzing and understanding the performance behavior of parallel applications on parallel computing platforms is a long-standing concern in the High Performance Computing community. When the targeted platforms are not available , simulation is a reasonable approach to obtain objective performance indicators and explore various hypothetical scenarios. In the context of applications implemented with the Message Passing Interface, two simulation methods have been proposed, on-line simulation and off-line simulation, both with their own drawbacks and advantages. In this work we present an off-line simulation framework, i.e., one that simulates the execution of an application based on event traces obtained from an actual execution. The main novelty of this work, when compared to previously proposed off-line simulators, is that traces that drive the simulation can be acquired on large, distributed, heterogeneous , and non-dedicated platforms. As a result the scalability of trace acquisition is increased, which is achieved by enforcing that traces contain no time-related information. Moreover, our framework is based on an state-of-the-art scalable, fast, and validated simulation kernel. We introduce the notion of performing off-line simulation from time-independent traces, propose and evaluate several trace acquisition strategies, describe our simulation framework, and assess its quality in terms of trace acquisition scalability, simulation accuracy, and simulation time.
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Concurrency and Computation: Practice and Experience, Wiley, 2015, 27 (5), pp.24. <10.1002/cpe.3278>
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Dernière modification le : jeudi 12 mai 2016 - 09:54:11
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Henri Casanova, Frédéric Desprez, George S. Markomanolis, Frédéric Suter. Simulation of MPI applications with time-independent traces. Concurrency and Computation: Practice and Experience, Wiley, 2015, 27 (5), pp.24. <10.1002/cpe.3278>. <hal-01232776>

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