并行CFD-DEM耦合的同位分区策略
A co-located partitions strategy for parallel CFD-DEM couplings
摘要：
在这项工作中，一个新的分区配置策略的并行执行的CFD-DEM耦合进行了研究。具有良好的并行性能是欧拉-拉格朗日软件的一个关键问题，该软件旨在应用于解决工业上重要的问题，因为这些耦合的计算成本是它们的主要缺点之一。这里提出的方法包括在同一MPI进程中的每个软件的仿真域的重叠部分，以减少数据交换的成本。它示出了这种策略如何允许减少内存消耗和CFD和DEM之间的进程间通信到最低限度，从而克服了文献中确定的一个重要的并行化瓶颈。提出了三个基准来评估这种方法的一致性和可扩展性。在280个核心上的耦合执行表明，不到0.1%的时间用于执行物理间数据交换。
英文摘要：
In this work, a new partition-collocation strategy for the parallel execution of CFD--DEM couplings is investigated. Having a good parallel performance is a key issue for an Eulerian-Lagrangian software that aims to be applied to solve industrially significant problems, as the computational cost of these couplings is one of their main drawback. The approach presented here consists in co-locating the overlapping parts of the simulation domain of each software on the same MPI process, in order to reduce the cost of the data exchanges. It is shown how this strategy allows reducing memory consumption and inter-process communication between CFD and DEM to a minimum and therefore to overcome an important parallelization bottleneck identified in the literature. Three benchmarks are proposed to assess the consistency and scalability of this approach. A coupled execution on 280 cores shows that less than 0.1% of the time is used to perform inter-physics data exchange.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
