Federate Migration in a Service Oriented HLA RTI

11th IEEE International Symposium on Distributed Simulation and Real-Time Applications (DS-RT'07) Pub Date : 2007-10-22 DOI:10.1109/DS-RT.2007.28

Zengxiang Li, Wentong Cai, S. Turner, K. Pan

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引用次数: 40

Abstract

The High Level Architecture provides a general framework for distributed simulation, promoting reusability and interoperability of simulation components (federates). Large scale distributed simulation, in which federates run on many heterogenous computing machines may benefit from migrating federates among these machines for load- balancing and fault-tolerance. However, the HLA framework does not provide formal support for federate migration currently. We have previously developed a Service Oriented HLA RTL (SOHR) framework, which provides HLA RTL functionalities via the cooperation of a set of Grid services. SOHR is developed with migration support features by using a decoupled federate design. In this paper, a basic federate migration protocol is first proposed to illustrate the process of federate migration in SOHR. Then two optimized protocols are further developed to overlap federate migration with federate execution for the purpose of reducing migration overhead. Experiments show that the migration overhead is reduced considerably in the optimized protocols.

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面向服务HLA RTI中的联邦迁移

高级体系结构为分布式仿真提供了一个通用框架，促进了仿真组件(联邦)的可重用性和互操作性。大规模分布式仿真中，联邦运行在许多异构计算机器上，可以从在这些机器之间迁移联邦中获益，从而实现负载平衡和容错。然而，HLA框架目前还没有为联邦迁移提供正式的支持。我们之前已经开发了一个面向服务的HLA RTL (SOHR)框架，它通过一组网格服务的协作提供HLA RTL功能。SOHR通过使用解耦的联邦设计来开发迁移支持功能。本文首先提出了一个基本的联邦迁移协议来说明SOHR中的联邦迁移过程。然后进一步开发了两个优化协议，使联邦迁移与联邦执行重叠，以减少迁移开销。实验表明，优化后的协议显著降低了迁移开销。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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11th IEEE International Symposium on Distributed Simulation and Real-Time Applications (DS-RT'07)

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