Cerebras Explains | What Is LLM Inference?
LLM inference is bottlenecked by memory bandwidth, not compute speed
“LLM inference is actually limited by memory bandwidth, not computational speed.”
Cerebras published a short explainer video on LLM inference mechanics, covering the prefill and decoding phases and KV caching. The piece positions Cerebras hardware as purpose-built to eliminate the memory bandwidth bottleneck that limits inference speed. This is a marketing-flavored educational asset rather than a new announcement — the memory-bandwidth-bound nature of inference is already well understood in the industry.