[akamoonknight]

Is there information on how the Fugaku machines are connected together? The highest performing Power9 ones seem to use InfiniBand, but is that still true with the ARM devices?

Edit: seems to be a Fujitsu designed interconnect [0]. Wonder how much of the overall performance is dependent on the difference in communication.

https://www.fujitsu.com/global/documents/solutions/business-...

[gnufx]

I don't know whats the best reference, but here's one: https://www.fujitsu.com/global/Images/the-tofu-interconnect-...

[akamoonknight]

Ah, much better than the white paper, thanks!