Post #2558864
2025-12-18 15:47 UTC
Replies (3)
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@fclc@mast.hpc.social 2025-12-18 16:16
@geerlingguy@mastodon.social Slightly strange: A few minutes in there's a comment on how RDMA can only be enabled on 3 of the ports because of a naming conventions? CC @never_released@mastodon.social That seems extremely strange to me. Suspect it's time to update this post: https://gist.github.com/FCLC/6e0f0e79e9d4f5740573f09d7579eb72 Even with that limitation, you should still have 3 more TB5 ports on the M3Ultra devices. Suspect the switch clustering side can be addressed using these: https://shop.atto.com/products/thunderlink-eu-model-5102-dual-port-thunderbolt%E2%84%A2-5-to-qsfp28-lc-optical-100gb-ethernet-adapter?_pos=7&_fid=69a565b99&_ss=c Turns a pair of TB5 ports into a pair of ...
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@geerlingguy@mastodon.social 2025-12-18 16:05
@fclc@mast.hpc.social I'd love to get HPL going over Thunderbolt, much less RDMA. But if there are any other HPC things you can think of to test, let me know!
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@ctaylor@mastodon.content.town 2025-12-18 23:21
@fclc@mast.hpc.social @geerlingguy@mastodon.social Apple could put an "i" in front of OpenMPI 🥁