Parts/Interconnect/AWS Elastic Fabric Adapter
Interconnect · EFA · 2019
AWS Elastic Fabric Adapter
OS-bypass network interface using AWS’s own SRD transport rather than InfiniBand. Completes the AWS-designed stack: Graviton host, Trainium accelerator, EFA fabric, none of it sold as a part.
Why this part
An operating-system bypass adapter on top of ordinary data-centre Ethernet, using AWS's own Scalable Reliable Datagram transport instead of TCP or InfiniBand. SRD deliberately gives up in-order delivery and sprays packets across every available path, on the reasoning that a cloud network's real enemy is tail latency from congestion rather than raw hop time. It is the network layer of a fully AWS-designed node, none of which can be bought as hardware, and it is another large pool of compute that exists only as rentable capacity.
Systems using this part
- Systems
- 2
- Rmax underneath
- 0.0 GFlop/s
- Units recorded
- -
| System | Role | Country | Units | System Rmax | Supplied by | Rank |
|---|---|---|---|---|---|---|
| Project Rainier 2025-10 | Interconnect | USA | - | - | Amazon | - |
| Project Ceiba | Interconnect | USA | - | - | Amazon | - |
“Units recorded” sums only the edges where a public source states a quantity. It is a floor, not a total, and should never be read as installed base.