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首页> 外文期刊>Journal of Computing and Information Science in Engineering >Performance Study of GasTurbnLab, an Agent-Based Multi-Physics Problem Solving Environment for the Gas Turbine Engine Simulation
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Performance Study of GasTurbnLab, an Agent-Based Multi-Physics Problem Solving Environment for the Gas Turbine Engine Simulation

机译：GasTurbnLab的性能研究，基于Agent的燃气轮机仿真多物理场问题解决环境

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摘要

Multiphysics applications are real world problems with a large number of different shape components that obey different physical laws and manufacturing constraints and interact with each other through geometric and physical interfaces. They demand accurate and efficient solutions and a modern type of computational modeling, which designs the whole physical system with as much detail as possible. The simulation of gas turbine engine is such a multiphysics application and is realized with GasTurbnLab, an agent-based Multiphysics Problem Solving Environment (MPSE). Its performance and evaluation study is presented in this paper. For this, a short description of the software components and hardware infrastructure is given. The performance and the scalability of the parallelism are depicted, and the communication overhead between agents is studied with respect to the number of agents and their location in the "computational grid." The execution time is recorded, and its analysis verifies the complexity of the solvers in use and the performance of the available hardware. Three different clusters of INTEL Pentium processors were used for experimentation to study how the communication time was affected by processor's homogeneity/heterogeneity and the different connections between the processors. The study of the numerical experiments shows that the domain decomposition and interface relaxation methodology, along with the usage of agent platforms, does not increase the complexity of the simulation problem, and the communication cost is too low, compared with the computations, to reflect on the total simulation time. Therefore, GasTurbnLab is an efficient example of a complex physical phenomena simulation.
机译：多物理场应用是现实世界中的问题，具有大量不同形状的组件，这些组件遵循不同的物理定律和制造约束，并通过几何和物理界面相互交互。他们需要准确，高效的解决方案和现代类型的计算模型，以尽可能详细地设计整个物理系统。燃气涡轮发动机的仿真就是这样的多物理场应用程序，它是通过基于代理的多物理场问题解决环境（MPSE）GasTurbnLab实现的。本文介绍了其性能和评估研究。为此，给出了软件组件和硬件基础结构的简短描述。描述了并行性的性能和可伸缩性，并针对代理的数量及其在“计算网格”中的位置研究了代理之间的通信开销。记录执行时间，并对其进行分析，以验证所使用的求解器的复杂性以及可用硬件的性能。使用三个不同的INTEL Pentium处理器集群进行实验，以研究通信时间如何受到处理器的同质性/异质性以及处理器之间不同的连接的影响。数值实验研究表明，域分解和接口松弛方法以及Agent平台的使用并没有增加仿真问题的复杂性，与计算相比，通信成本太低，无法反映出来。总仿真时间。因此，GasTurbnLab是复杂物理现象模拟的有效示例。

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