RDMA

Definition

Remote Direct Memory Access (RDMA) is a technology that allows one computer to directly access the memory of another computer without involving the operating system of either machine. This bypasses the CPU and kernel, dramatically reducing latency and CPU overhead for data transfers. RDMA is fundamental to high-performance computing interconnects like InfiniBand and is also available over Ethernet via RoCE (RDMA over Converged Ethernet) and iWARP protocols.

Written by
Daniel Kovacs

Updated Feb 11, 2026

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