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arXiv 2407.05337cs.DC
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混合科学工作流的容错机制

A Fault Tolerance Mechanism for Hybrid Scientific Workflows

Alberto Mulone, Doriana Medić, Marco Aldinucci

AI总结:

针对混合工作流在异构分布式环境中故障点增多的问题,本文提出并实现了一种基于恢复与回滚的容错机制,并通过形式化表示和实验验证了其有效性。

摘要:

在大型分布式系统中,故障是每天频繁发生的事件,尤其是随着计算任务数量及其部署位置的不断增长。用工作流表示应用的优势在于可以利用工作流管理系统(WMS)的特性,例如可移植性。一些WMS提供的一个相关特性是可靠性。近年来,混合工作流的出现通过增加涉及异构和独立环境的分布式计算的可能性,带来了新的、引人入胜的挑战。因此,执行过程中可能发生故障的点的数量增加了,产生了不同且值得研究的重要挑战。本文基于恢复和回滚方法,提出了一种面向混合工作流的容错机制实现。文中给出了使用形式化框架对混合工作流进行表示的方法,并通过实验证明了所实现方法的功能。

英文摘要:

In large distributed systems, failures are a daily event occurring frequently, especially with growing numbers of computation tasks and locations on which they are deployed. The advantage of representing an application with a workflow is the possibility of exploiting Workflow Management System (WMS) features such as portability. A relevant feature that some WMSs supply is reliability. Over recent years, the emergence of hybrid workflows has posed new and intriguing challenges by increasing the possibility of distributing computations involving heterogeneous and independent environments. Consequently, the number of possible points of failure in the execution increased, creating different important challenges that are interesting to study. This paper presents the implementation of a fault tolerance mechanism for hybrid workflows based on the recovery and rollback approach. A representation of the hybrid workflows with the formal framework is provided, together with the experiments demonstrating the functionality of implementing approach.

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。

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