M1 Ultra Chip Interconnect Latency

By: Ian Ameline (ian.delete@this.augmenta.ai), March 16, 2022 1:22 pm
Room: Moderated Discussions
The interconnect between the two M1 max dies that make up the M1 ultra is claimed to be 2.5TB/second -- that's alot of bandwidth, but what about latency? They also let slip that it is 10,000 lanes wide. Simple math leads me to believe that it is running at 2 Ghz.

It will be interesting to see how many cycles of latency this is going to add to accesses that go across this interconnect. Anyone care to speculate -- or even better, try it out on an M1 ultra to see?

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TopicPosted ByDate
M1 Ultra Chip Interconnect LatencyIan Ameline2022/03/16 01:22 PM
  M1 Ultra Chip Interconnect LatencyDummond D. Slow2022/03/17 09:52 AM
    Wrong thread, sorry.Dummond D. Slow2022/03/17 10:03 AM
    M1 Ultra Chip Interconnect LatencyMark Roulo2022/03/17 12:23 PM
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