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Zero-sided RDMA: Network-driven Data Shuffling

Matthias Jasny; Lasse Thostrup; Carsten Binnig
In: Norman May; Nesime Tatbul (Hrsg.). Proceedings of the 19th International Workshop on Data Management on New Hardware, DaMoN 2023, Seattle, WA, USA, June 18-23, 2023. International Workshop on Data Management on New Hardware (DaMoN), Pages 82-85, ACM, 2023.


In this paper, we present a novel communication scheme called zero-sided RDMA, enabling data exchange as a native network service using a programmable switch. In contrast to one- or two-sided RDMA, in zero-sided RDMA, neither the sender nor the receiver is actively involved in data exchange. Zero-sided RDMA thus enables efficient RDMA-based data shuffling between heterogeneous hardware devices in a disaggregated setup. In our initial evaluation, we show that zero-sided RDMA can outperform existing one-sided RDMA-based schemes due to offloading the coordination to the network and new optimizations that are only possible by coordinating the data exchange on the switch.

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