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How to use GPUs over multiple computers for local AI?
(lemmy.dbzer0.com)
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this post was submitted on 09 Apr 2025
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You don’t need cards to have full bandwidth, they only time it will matter is when you’re loading the models on the card. You need a motherboard with x16 slots but even x4 connections would be good enough. Running the model doesn’t need a lot of bandwidth. Remember you only load the model once then reuse it.
An x4 pcie gen 4 slot has ~7.8 GiB/s theoretical transfer rate (after overhead), a x16 has ~31.5GiB/s - so disk I/O is likely your limit even for a x4 slot.
I see. That solves a lot of the headaches I imagined I would have. Thank you so much for clearing that up