Partitioned Collective Communication

Daniel J. Holmes,Anthony Skjellum,Julien Jaeger,Ryan E. Grant,Purushotham V. Bangalore,Matthew G.F. Dosanjh,Amanda Bienz,Derek Schafer

2021 Workshop on Exascale MPI (ExaMPI)（2021）

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摘要

Partitioned point-to-point communication and persistent collective communication were both recently standardized in MPI-4.0. Each offers performance and scalability advantages over MPI-3.1-based communication when planned transfers are feasible in an MPI application. Their merger into a generalized, persistent collective communication with partitions is a logical next step, with significant advant...

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