Gahow Wang
b7902061d1
Three CPU-only analysis pieces that turn raw Window 1 artifacts into publishable numbers and figures. scripts/compute_apc_upper_bound.py Block-level trie walk over hash_ids to compute the theoretical APC ceiling on a trace, decomposed into intra-session / any-session / shared-prefix-only. Gives a fixed reference for what each routing policy could *possibly* achieve. w600 result: 79.6% intra-session, 80.3% any-session, 0.1% shared-prefix. analysis/characterization/b2_sweep_analysis.py (rewrite) Previous version used joined_analysis.interference_index() which labeled overlap = "any prefill in any other request during this decode". With short-prompt decode load this is always true (everyone's prefill overlaps everyone else's decode); n_overlap was 239/240 even in the different-worker control. New version labels overlap iff the decode's [t_first_token, t_finish] intersects an actual large *injection* window, computed from the cell's "prefill"-tagged metric rows. Different-worker control now cleanly sits at idx ≈ 1.0, same-worker scales monotonically. analysis/characterization/render_window1_figures.py Renders 8 PNGs from the result JSONs: B3 latency / APC vs ceiling / APC vs hotspot scatter / per-worker TTFT / failure breakdown, B2 TPOT and TTFT curves (overlap vs clean and idx), reuse decomposition, KV footprint. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>