Your team knows Ethernet and needs RDMA. Which option fits?
Why C is the answer
RoCE
RoCE carries RDMA over converged Ethernet.
In detail
- RoCE carries RDMA over converged Ethernet.
- RoCE needs careful network setup.
Use case
An illustrative scenario, not a real incident.
A team's network engineers know Ethernet, and RoCE gives them RDMA on it.
See it in different ways
flowchart TD
A{"What are the priorities?"} -->|"Largest training, lowest latency"| B["InfiniBand"]
A -->|"Ethernet skills and RDMA"| C["RoCE on Ethernet"]
A -->|"AI on Ethernet at scale"| D["Spectrum-X"]sequenceDiagram participant A as Server A memory participant N as NIC participant B as Server B memory A->>N: Direct read N->>B: Direct write over the fabric B-->>A: Completion
flowchart LR S0["Ethernet network"] --> S1["Lossless configuration"] --> S2["RoCE traffic"]
Key point: RoCE carries RDMA over Ethernet.
Why the other options are wrong
- A. NFS
- NFS is a file protocol.
- B. iSCSI
- iSCSI carries block storage.
- D. SATA
- SATA connects disks.