AI
prefill vs decode
process the prompt vs generate token-by-token
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InferenceAIMore terms from this board
- context windowmax tokens the model sees at once
- greedyalways take the top token
- groundingRAG/tools to tie answers to real sources
- hallucinationconfident, fluent, but false output
- inferencegenerating text from the trained model
- KV cachestored Keys/Values of past tokens (speeds generation)
- samplingpicking the next token from the distribution
- statelessno memory between calls (history is re-sent)
- temperaturerandomness dial (0 = deterministic)
- the KV cache grows with contextthe memory cost of long context
- throughputtokens/sec
- top-k / top-p (nucleus)sample only from the top tokens / the top cumulative mass
- TTFTtime to first token