Functional supervision improves cross-model KV cache transport over reconstruction alone

CacheLink learns a coupled K/V correction through the frozen receiver, reducing handoff latency by up to 7.27x at 32K context.

Top University
Haomiao Qiu · Yining Tang · Zijia Song · Ruizi Han · Ziyue Qiao · Miao Zhang

Harbin Institute of Technology · Shenzhen Great Bay University · Zhejiang University

Research Digest··2 min read
The authors study zero-prefill cross-model context handoff, where a sender's KV cache is translated for direct receiver use.

The authors formulate zero-prefill cross-model context handoff and conduct diagnostic analyses of KV reuse, showing that similar reconstruction errors can lead to markedly different receiver behavior.

Why this paper

From Zhejiang University and 2 others

In one line

CacheLink achieves zero-prefill cross-model KV handoff by optimizing receiver computation rather than tensor fidelity, reducing latency up to 7.27x.

What we could check

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Research Digest

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