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A STATE-TIME FORMULATION FOR MULTIBODY SYSTEMS DYNAMICS SIMULATION , PART Ⅱ: PARALLEL IMPLEMENTATION

机译:多体系统动力学仿真的状态时间公式,第二部分:并行实现

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摘要

This paper outlines the parallel implementation of a newly developed multibody system dynamics formulation. The methodology provides the means for the dynamic simulation to be parallelized temporally as well as spatially which will allow better exploitation of anticipated massively parallel computing resources. This will have three advantages: First, the system of equations may now be coarse grain parallelized to a far greater degree allowing an increased number of processors to be effectively utilized. Secondly, this will significantly reduce the fraction of serial operations and thus should increase speedup (reduced turn-around). Finally, the method allows temporal scale of each variable to be adjusted independently and as such offer considerable advantage for the efficient and accurate modeling and simulation ofmultiscale behaviors. These gains can be accomplished by discretizing a special form of the equations of motion in both temporal and spatial domains. Examples are provided to clarify the application of this scheme with particular attention on time domain parallelization.
机译:本文概述了新开发的多体系统动力学公式的并行实现。该方法为动态仿真在时间和空间上并行化提供了手段,这将允许更好地利用预期的大规模并行计算资源。这将具有三个优点:首先,方程式系统现在可以在更大程度上并行化粗粒度,从而可以有效利用更多数量的处理器。其次,这将大大减少串行操作的比例,因此应提高速度(减少周转)。最后,该方法允许独立调整每个变量的时间尺度,因此为多尺度行为的有效和准确建模和仿真提供了相当大的优势。这些增益可以通过在时域和空间域离散化运动方程的一种特殊形式来实现。提供了一些实例来阐明该方案的应用,尤其要注意时域并行化。

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