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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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Contributor : Thomas Ropars <>
Submitted on : Monday, March 2, 2015 - 10:57:19 PM
Last modification on : Monday, May 4, 2020 - 11:40:18 AM
Long-term archiving on: : Tuesday, June 2, 2015 - 10:00:49 AM


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  • HAL Id : hal-01121959, version 1



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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