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Why Does HPC Need InfiniBand?

This story is from 2026-09-30. It is preserved in the archive; the latest stories are on the live feed.

When people first learn about HPC clusters, they often notice something unusual. The compute nodes don't just have Ethernet. Many HPC clusters also have InfiniBand . So a natural question is: Why? If Ethernet already connects computers together, why do HPC clusters need another network? The answer…

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  1. 2026-09-30 18:50 · DEV Community — AI
    Why Does HPC Need InfiniBand?

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