Le, Long Hoang Eslahi-Kelorazi, Mojtaba Coelho, Paulo Pedone, Fernando 2021 Atomic multicast is a group communication abstraction useful in the design of highly available and scalable systems. It allows messages to be addressed to a subset of the processes in the system reliably and consistently. Many atomic multicast algorithms have been designed for the message-passing system model. The paper presents RamCast, the first atomic multicast protocol for the shared-memory system model. We design RamCast by leveraging Remote Direct Memory Access (RDMA) technology and by carefully combining techniques from message-passing and shared-memory systems. We show experimentally that RamCast outperforms current state-ofthe-art atomic multicast protocols, increasing throughput by up to 3.7× and reducing latency by up to 28×. application/pdf https://localhost:5000/ark:/12658/srd1325346 https://susi.usi.ch/global/documents/325346 https://susi.usi.ch/documents/325346/files/Pedone_2021_ACM_Middleware.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1145/3464298.3493393 info:eu-repo/semantics/altIdentifier/ark/12658/srd1325346 info:eu-repo/semantics/openAccess Rights reserved Middleware '21: Proceedings of the 22nd International Middleware Conference. - 2021, p. 172–184 Group communication Atomic multicast RDMA info:eu-repo/classification/udc/004 RamCast : RDMA-based atomic multicast http://purl.org/coar/resource_type/c_5794