Efficient Process Replication for MPI Applications: Sharing Work Between Replicas

Abstract : With the increased failure rate expected in future extreme scale supercomputers, process replication might become a viable alternative to checkpointing. By default, the workload efficiency of replication is limited to 50% because of the additional resources that have to be used to execute the replicas of the application's processes. In this paper, we introduce intra-parallelization, a solution that avoids replicating all computation by introducing work-sharing between replicas. We show on a representative set of benchmarks that intra-parallelization allows achieving more than 50% efficiency without compromising fault tolerance.
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29th IEEE International Parallel & Distributed Processing Symposium (IPDPS2015), 2015, Hyderabad, India
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Thomas Ropars, Arnaud Lefray, Dohyun Kim, André Schiper. Efficient Process Replication for MPI Applications: Sharing Work Between Replicas. 29th IEEE International Parallel & Distributed Processing Symposium (IPDPS2015), 2015, Hyderabad, India. 〈hal-01121959〉

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