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Home/Glossary/Admission control

Serving

Admission control

What it is

Admission control decides which queued requests enter active model execution and which remain waiting. The decision can account for cache capacity, batch limits, priorities, and latency objectives.

Why it moves cost and latency

Controlled admission prevents active work from consuming memory or latency headroom needed for stable service. Policies that are too conservative can leave useful accelerator capacity idle.

What it looks like in practice

A scheduler estimates prompt and generation demand before reserving execution capacity. It revises admission as sequences complete, caches free, requests cancel, or priorities change.

Related terms

  • Concurrency->
  • Chunked prefill->
  • In-flight batching->
  • Request queueing->
  • Context length->
  • Data-parallel serving->

Questions this definition answers

What does Admission control mean in inference serving?

Admission control decides which queued requests enter active model execution and which remain waiting. The decision can account for cache capacity, batch limits, priorities, and latency objectives. A scheduler estimates prompt and generation demand before reserving execution capacity. It revises admission as sequences complete, caches free, requests cancel, or priorities change.

Why can Admission control move cost or latency?

Controlled admission prevents active work from consuming memory or latency headroom needed for stable service. Policies that are too conservative can leave useful accelerator capacity idle.

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