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This paper proposes Clock-RSM, a new state machine replication protocol that uses loosely synchronized physical clocks to totally order commands for geo-replicated services. Clock-RSM assumes realistic non-uniform latencies among replicas located at different data centers. It provides low-latency linearizable replication by overlapping 1) logging a command at a majority of replicas, 2) determining...
The increasing algorithm complexity and dataset sizes necessitate the use of networked machines for many graph-parallel algorithms, which also makes fault tolerance a must due to the increasing scale of machines. Unfortunately, existing large-scale graph-parallel systems usually adopt a distributed checkpoint mechanism for fault tolerance, which incurs not only notable performance overhead but also...
With the rapid scale out of supercomputers comes a corresponding higher failure frequency. Fault-tolerant methods have evolved to adapt to high rates of failure, but the behavior of MPI, the most widely used scalable programming middleware, is insufficient when confronting such failures. We present FA-MPI (Fault-Aware MPI), a set of extensions to the MPI standard designed to enable applications to...
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