#prefill-phase

Large Language Models

LLM Black Box Cracked: Prefill, Decode, KV Cache Exposed

Everyone figured LLMs just 'think' magically. Wrong. Prefill slams your prompt parallel, decode drips tokens slow—KV cache glues it efficient, but it's a memory hog too.

Large Language Models

Why AI Chats Crawl on Long Prompts: KV Cache, Prefill, and the Decode Trap

That endless wait when you paste a novel into ChatGPT? It's not just 'thinking'—it's LLM inference hitting a memory wall. Here's the inside story on KV cache and why it changes everything.