NetStep: a micro-stepped distributed network simulation framework

Olivier Dalle 1 Emilio P. Mancini 1
1 OASIS - Active objects, semantics, Internet and security
CRISAM - Inria Sophia Antipolis - Méditerranée , Laboratoire I3S - COMRED - COMmunications, Réseaux, systèmes Embarqués et Distribués
Abstract : This paper presents NetStep, a prototype for the distributed simulation of very large scale network simulations, such as the simulation of peer-to-peer applications. We use simulation micro-steps as a means for optimizing the overlap of communications and computations, without changing the original event-driven model. As a consequence, NetStep allows for the reuse of unmodified existing sequential simulators for building large-scale distributed simulations: the overall simulation is divided both in time and space, into a large number of simulation micro-steps, each of which being executed by a legacy sequential simulator. By choosing the time-step smaller than the minimal look-ahead due to communications, we avoid the need for synchronization between Logical Processes during the simulation. Instead, the simulated communications become inputs and outputs of the simulation micro-steps, and are routed in parallel between LPs by a NetStep dedicated entity. Our prototype is based on the SimGrid sequential simulator.
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Submitted on : Tuesday, February 12, 2013 - 3:27:08 PM
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Olivier Dalle, Emilio P. Mancini. NetStep: a micro-stepped distributed network simulation framework. SIMUTools - 6th International ICST Conference on Simulation Tools and Techniques - 2013, ICST, Mar 2013, Cannes, France. ⟨hal-00787636⟩

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