NVIDIA's DOCA GPUNetIO unifies GPU-initiated networking across DOCA and open-source stack
DOCA GPUNetIO provides a common GDA‑KI foundation that lets CUDA kernels directly drive Ethernet, RDMA/Verbs and DMA operations to keep CPUs out of the application critical path. NVIDIA ships GPUNetIO as a full DOCA SDK implementation and a lighter open‑source Verbs‑focused library; major libraries (NCCL GIN since 2.27, NVSHMEM 3.7, UCX/NIXL, NVQLink and Holoscan components) are adopting the shared path, with reported benefits such as improved small‑message scaling and sub‑microsecond-to-microsecond latencies in specialized workflows.