nexar-rdma 0.1.2

RDMA and GPUDirect transport extensions for nexar
Documentation

nexar-rdma

RDMA and GPUDirect transport extensions for nexar.

Provides InfiniBand/RoCE kernel-bypass transport as a drop-in extension to nexar's QUIC-based communication. After bootstrapping a nexar cluster, establish an RDMA mesh over the existing connections for zero-copy, OS-bypass data transfers.

Features

Feature What it enables Extra dependencies
(default) RDMA transport via ibverbs (InfiniBand/RoCE) libibverbs (rdma-core)
gpudirect GPU memory ↔ NIC directly, CudaAdapter libibverbs + CUDA runtime

Usage

[dependencies]
nexar-rdma = "<use-latest-version>"

# For GPUDirect:
# nexar-rdma = { version = "<use-latest-version>", features = ["gpudirect"] }

use nexar_rdma::{bootstrap::establish_rdma_mesh, PeerConnectionRdmaExt};

// After nexar bootstrap, layer RDMA on top:
establish_rdma_mesh(&clients).await;

With the gpudirect feature, CudaAdapter implements nexar's DeviceAdapter trait for GPU memory, and NexarClientRdmaExt adds RDMA-accelerated collective operations.

Building

# RDMA (requires libibverbs / rdma-core)
cargo build -p nexar-rdma --release

# GPUDirect RDMA (requires libibverbs + CUDA)
cargo build -p nexar-rdma --release --features gpudirect

License

Licensed under the Apache License, Version 2.0. See LICENSE for details.