DIY GPU cluster war stories: PCIe retimers can literally catch fire
giffmana · x · 2026-10-25
Developer @carrigmat teased an upcoming blogpost on building DIY GPU clusters, including a section titled "PCIe retimers: You've never had to think about them before, here's how to stop them catching fire." @giffmana looked into it and reacted with "holy shit" — highlighting obscure hardware pitfalls in multi-GPU builds.
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