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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

I agree with your assessment. I was indeed going to run k8s, just hadn't figured out what you told me. Thanks for that.

And yes, I realised that 10Gbe is just not enough for this stuff. But another commenter told me to look for used threadripper and EPYC boards (which are extremely expensive for me), which gave me the idea to look for older Intel CPU+Motherboard combos. Maybe I'll have some luck there. I was going to use Talos in a VM with all the GPUs passed through to it.