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ChatGPT Infrastructure Explained: GPUs, Memory, and Distributed Inference

When you ask ChatGPT a question, the hard part isn’t generating the answer. The hard part is moving enormous amounts of data fast enough that the response appears instantly. Modern AI systems process trillions of parameters across clusters of graphics processing units (GPUs) connected by specialized high-speed networks. Every word you type creates a chain reaction: Memory gets allocated. GPUs…