1-to-4 Cable or 1-to-2 Cable?

Leaf switches need to connect NDR200 ports of different servers in the SU with 1-to-4 cable to form different communication rings.
In Superpod networking, if I configure 4 NDR200 cards on each server, can I directly connect to the same switch with a 1-to-4 cable? Or do I have to use two 1-to-2 cables to connect to different switches?
Picture of FiberMall

FiberMall

Answered on 8:07 am

Not recommended. This connection mode does not comply with SuperPoD networking rules. Considering the NCCL/SHARP performance, Leaf switches need to connect NDR200 ports of different servers in the SU with one-quarter cables to form different communication rings.

People Also Ask

400G Ethernet vs InfiniBand NDR: Which Fabric for AI?

Both 400G Ethernet and InfiniBand NDR deliver a nominal bandwidth of 400 Gb/s per port. However, identical port speeds do not guarantee identical performance in AI training clusters. The differences

Related Articles

Scroll to Top