I don't believe the pricing is in the same ballpark.
There's also other differences, such as port counts.
AFAICT Spectrum switches at 400Gbps have up to 128 ports whereas equivalent Infiniband NDR Quantum only have 64 [0].
When building clusters of 32K+ GPUs the network cost, power, transceivers etc start to add up.
There's also other differences, such as port counts. AFAICT Spectrum switches at 400Gbps have up to 128 ports whereas equivalent Infiniband NDR Quantum only have 64 [0].
When building clusters of 32K+ GPUs the network cost, power, transceivers etc start to add up.
[0] https://www.semianalysis.com/p/100000-h100-clusters-power-ne...