Optimised Recovery with a Coordinated Checkpoint/Rollback Protocol for Domain Decomposition Applications
Optimised Recovery with a Coordinated Checkpoint/Rollback Protocol for Domain Decomposition Applications
复制标题
通过域分解应用程序的协调检查点/回滚协议优化恢复
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
T. Gautier
中科院分区：
文献类型：
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作者：
Xavier Besseron;T. Gautier
在当今长期运行的科学平行应用中，容错方案起着重要作用。由于执行过程中涉及的不可靠组件的数量，故障的可能性可能很重要。在本文中，我们介绍了基于协调方案的新检查点/回滚协议的方法和初步结果。该协议的一个功能是，由于执行的抽象表示，故障恢复仅需要部分重新启动其他过程。域分解应用程序上的模拟表明，与经典的全局回滚协议相比，重新启动所需的计算量和相关过程的数量减少。
Fault-tolerance protocols play an important role in today long runtime scientific parallel applications. The probability of a failure may be important due to the number of unreliable components involved during an execution. In this paper we present our approach and preliminary results about a new checkpoint/rollback protocol based on a coordinated scheme. One feature of this protocol is that fault recovery only requires a partial restart of other processes thanks to the availability of an abstract representation of the execution. Simulations on a domain decomposition application show that the amount of computations required to restart and the number of involved processes are reduced compared to the classical global rollback protocol.