[Beowulf] IB vs. Ethernet

[Ryan Novosielski]

Haven’t tried other than Infiniband, except a brief stint with OPA (which you certainly know about), which was also fine.

I have a sense that not that many users are taking advantage of the Infiniband performance, but I don’t know how close the performance is.

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On Jan 15, 2026, at 11:07, Prentice Bisbal <prentice at ucar.edu> wrote:

Beowulfers,

Here's a good topic for discussion: What are your thoughts on Ethernet vs. InfiniBand? Can UltraEthernet compete with/surpass IB, or is IB still the standard for non-proprietary (Slingshot, Tofu, etc.) networking for HPC? Discuss!

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Prentice

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