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Periodic, coordinated, checkpointing to disk is the most prevalent fault tolerance method used in modern large-scale, capability class, high-performance computing (HPC) systems. Previous work has shown that as the system grows in size, the inherent synchronization of coordinated checkpoint/restart (CR) limits application scalability; at large node counts the application spends most of its time checkpointing...
Amazon S3-style storage is an attractive option for clouds that provides data access over HTTP/HTTPS. At the same time, parallel file systems are an essential component in privately owned clusters that enable highly scalable dataintensive computing. In this work, we take advantage of both of those storage options, and propose pWalrus, a storage service layer that integrates parallel file systems effectively...
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