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krooksn.dev/ krx

Research

Systems close to the machine.

I work around the point where model ideas meet practical systems: memory limits, local hardware, agent workflows, and the tooling needed to study them.

The work moves between papers, implementation probes, and research tools, with a bias toward things that can be tested on real machines.

Resident KV arc

Future reuse is an obligation boundary.

Resident KV Claims is a research line about when future KV reuse becomes a runtime responsibility, not just a cache hint. The public paper defines the contract: accepted future-reuse state needs claim identity, a materialization predicate, ordered lifecycle events, and claim-scoped outcomes.

Follow-on work is still in calibration. The next public bridge is a narrow vLLM observability note about prefix-cache lookup debugging. The lowering work asks how existing runtime primitives can satisfy those obligations without turning useful substrates into false conformance claims.

Not claimed: production speedup, native vLLM support, native TensorRT-LLM/SGLang/Dynamo conformance, or a verdict that existing runtimes lack useful KV machinery.

Open questions

The thread keeps moving.

  • Which future-KV obligations are too strong, too weak, or already covered by runtime paths I missed?
  • What can local constraints reveal about useful model systems?
  • How should inference systems handle memory pressure and long context?
  • How can agent workflows become more reliable without becoming opaque?