QDR Infiniband is, like, 2007 level tech. Today we have NDR Infiniband where a t... | Hacker News

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		jabl on March 1, 2023 \| parent \| context \| favorite \| on: AMD Zen2 ymm registers rolling back QDR Infiniband is, like, 2007 level tech. Today we have NDR Infiniband where a typical 4xHCA gets you 400 GB/s. Seems like a hypothetical Mac cluster would be severely limited by this compared to the typical x86 based server clusters.

bee_rider on March 1, 2023 | [–]

I’m sure such a switch would be serving some pretty beefy nodes, though, right? Maybe the compute:communication can be held constant with less-powerful Mac mini nodes?

piperswe on March 2, 2023 | [–]

The problem is that the Thunderbolt ports don't support that bandwidth, and there isn't any other way to connect PCIe peripherals.

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