Download Automatic Algorithm Selection for Complex Simulation by Roland Ewald PDF

By Roland Ewald

To pick the main compatible simulation set of rules for a given activity is usually tricky. this can be as a result of complex interactions among version positive factors, implementation information, and runtime setting, that may strongly have an effect on the general functionality. an automatic collection of simulation algorithms helps clients in establishing simulation experiments with no hard specialist wisdom on simulation.   Roland Ewald analyzes and discusses latest ways to resolve the set of rules choice challenge within the context of simulation. He introduces a framework for automated simulation set of rules choice and describes its integration into the open-source modelling and simulation framework James II. Its choice mechanisms may be able to do something about 3 occasions: no past wisdom is accessible, the effect of challenge gains on simulator functionality is unknown, and a courting among challenge gains and set of rules functionality might be demonstrated empirically. the writer concludes with an experimental evaluate of the built tools.

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Extra info for Automatic Algorithm Selection for Complex Simulation Problems

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12) i=1 The question of suitable approximation forms is much more complicated. 3. Convergence, complexity, and robustness are properties that can be evaluated for any kind of approximation form. In the ASP context, convergence refers to a sequence of approximation forms to which the 32 2 Algorithm Selection selection mapping sub-spaces S1 , S2 , . . ⊆ S correspond. The question is whether this sequence will eventually lead to an approximation form for which the corresponding subset of S contains the best selection mapping — and if so, how fast this can be expected to happen.

LP3 ... 4: Partitioning and load balancing: partitioning (left) occurs before the simulation starts. It aims at minimizing the communication of events between the local event queues that are executed in parallel (see fig. 3) and at fairly distributing the computational workload. Load balancing (right) is invoked at run-time to re-balance the workload if the initial partition turns out to be sub-optimal. In the given example, a load balancing algorithm might decide to relocate LP3 if it turns to communicate much more with LP1 and LP4 than with LP2 and LP5 .

73–75], which also extends the definition of dFm to infinite sets). ] the crucial ingredients for success are proper choices of the subclasses P0 , A0 , and S0 ” [272, p. 75]. The selection of these three sets are therefore important sub-problems of the ASP. The choice of P0 is usually motivated by the application context and one merely needs to follow some rough guidelines that take into account the different aspects of the ASP (as described in sec. 1). Likewise, A0 is usually predetermined by the set of implemented algorithms in a given system.

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