Jia-Hao Zhang

Range: Decoupling KV-Cache Reuse Granularity from Storage Work

LLM serving reuses cached key-value (KV) state to skip prefill, and growing contexts push that state past GPU HBM and CPU DRAM onto NVMe SSDs, placing prefix restore on the critical path of time-to-first-token (TTFT). We find that on a well-configured host-issued path the SSD is not the bottleneck: restoring the same 6...