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Deadlock-free dynamic reconfiguration schemes for increased network dependability

机译:无死锁的动态重配置方案可提高网络可靠性

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Network-based parallel computing systems often require the ability to reconfigure the routing algorithm to reflect changes in network topology if and when voluntary or involuntary changes occur. The process of reconfiguring a network's routing capabilities may be very inefficient and/or deadlock-prone if not handled properly. We propose efficient and deadlock-free dynamic reconfiguration schemes that are applicable to routing algorithms and networks which use wormhole, virtual cut-through, or store-and-forward switching, combined with hard link-level flow control. One requirement is that the network architecture use virtual channels or duplicate physical channels for deadlock-handling as well as performance purposes. The proposed schemes do not impede the injection, transmission, or delivery of user packets during the reconfiguration process. Instead, they provide uninterrupted service, increased availability/reliability, and improved overall quality-of-service support as compared to traditional techniques based on static reconfiguration.
机译:基于网络的并行计算系统通常需要具有重新配置路由算法的能力,以在发生自愿或非自愿更改时以及在发生更改时反映网络拓扑中的更改。如果处理不当,重新配置网络路由功能的过程可能会非常低效和/或容易出现死锁。我们提出了有效且无死锁的动态重配置方案,这些方案适用于使用虫洞,虚拟直通或存储转发切换并结合硬链接级流控制的路由算法和网络。一项要求是网络体系结构使用虚拟通道或重复的物理通道来进行死锁处理以及提高性能。所提出的方案在重新配置过程中不妨碍用户分组的注入,传输或传递。相反,与基于静态重新配置的传统技术相比,它们提供了不间断的服务,更高的可用性/可靠性以及改进的整体服务质量支持。

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