Re:xAI joins SpaceX
by mike_hearn on Tuesday February 03, 2026 @04:15AM
(#46868554)
The silicon itself does wear out. Dopant migration or something, I'm not an expert. Three years is probably too low but they do die. GPUs dying during training runs was a major engineering problem that had to be tackled to build LLMs.
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> GPUs dying during training runs was a major engineering problem that had to be tackled to build LLMs.
The scale there is a little bit different. If you're training an LLM with 10,000 tightly-coupled GPUs where one failure could kill the entire job, then your mean time to failure drops by that factor of 10,000. What is a trivial risk in a single-GPU home setup would become a daily occurrence at that scale.