Gahow Wang
d9cf3126c6
Reorganizes the outline from the EAR / dispatch-coupling framing (kept in git history) into the GPU-hit-first structure: - §1 background splits PD-colo / PD-disagg / KV storage hierarchy, each with a forward pointer to where it is used or refuted. - §2 leads with the metric argument (request latency / TPS / GPU util, not TTFT/TPOT); dispatch coupling is demoted to that justification. §2.2 embeds the two new v2 figures -- the measured 4-tier hit hierarchy (GPU < CPU-local < remote-RDMA-store << miss) and the capacity->APC/latency knee (Evidence #1) -- plus the cluster-scale correction to the working_set "14 nodes" number. - §3 recasts the three optimizations as corollaries of GPU-hit-first: make PD-colocation default (3.1), biased KV-awareness routing (3.2), dedup via migration not replication (3.3). - §5 related work now engages the storage-hierarchy camp directly. - Validation-status table and work plan updated (top priority: wall-clock amplification sweep). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>