Compute node failures are becoming a normal event for many long-running and scalable MPI applications. Keeping within the MPI standards and applying some of the methods developed so far in terms of fault tolerance, we developed a methodology that allows applications to tolerate failures through the creation of semi-coordinated checkpoints within the RADIC architecture. To do this, we developed the ULSC$^{2}$2-RADIC middleware that divides the application into independent MPI worlds where each MPI world would correspond to a compute node and make use of the DMTCP checkpoint library in a semi-coordinated environment. We performed experimental results using scientific applications and the NAS Parallel Benchmarks to assess the overhead and also the functionality in case of a node failure. We evaluated the computational cost of the semi-coordinated checkpoints compared with the coordinated checkpoints.

中文翻译：

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使用半协调检查点管理容错的中间件

计算节点故障正在成为许多长期运行且可扩展的 MPI 应用程序的正常事件。遵循 MPI 标准并应用迄今为止在容错方面开发的一些方法，我们开发了一种方法，该方法允许应用程序通过在 RADIC 架构内创建半协调检查点来容忍故障。为此，我们开发了 ULSC$^{2}$2-RADIC 中间件，将应用程序划分为独立的 MPI 世界，其中每个 MPI 世界对应一个计算节点，并在半协调环境中使用 DMTCP 检查点库。我们使用科学应用程序和 NAS Parallel Benchmarks 执行实验结果，以评估开销以及节点故障情况下的功能。我们评估了半协调检查点与协调检查点的计算成本。