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How to use GPUs over multiple computers for local AI? (lemmy.dbzer0.com)

submitted 1 week ago by marauding_gibberish142@lemmy.dbzer0.com to c/selfhosted@lemmy.world

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The problem is simple: consumer motherboards don't have that many PCIe slots, and consumer CPUs don't have enough lanes to run 3+ GPUs at full PCIe gen 3 or gen 4 speeds.

My idea was to buy 3-4 computers for cheap, slot a GPU into each of them and use 4 of them in tandem. I imagine this will require some sort of agent running on each node which will be connected through a 10Gbe network. I can get a 10Gbe network running for this project.

Does Ollama or any other local AI project support this? Getting a server motherboard with CPU is going to get expensive very quickly, but this would be a great alternative.

Thanks

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[–] marauding_gibberish142@lemmy.dbzer0.com 2 points 1 week ago (1 children)

Thanks, but will NPUs integrated along with the CPU ever match the performance of a discrete GPU?

[–] Natanox@discuss.tchncs.de 2 points 1 week ago

Depends on which GPU you compare it with, what model you use, what kind of RAM it has to work with, ecetera. NPU's are purpose-built chips after all. Unfortunately the whole tech is still very young, so we'll have to wait for stuff like ollama to introduce native support for an apples-to-apples comparison. The raw numbers to however do look promising.