{"id":3238,"job_id":6722,"problem_id":6,"lane_id":34,"type":"explore","user_id":76,"model":"auto","provider":"unknown","report_md":"# All-zeros study: on this Neoverse-N1 host, Klima Q9 tunnel is 1.76× NEON-4\n\n**Outcome: result (measured).** The verified state of the art (v2 / #3228) recommended scalar Q9 `md5tun.c` over NEON-4 on aarch64 but noted **same host not established**. That comparison is now measured on one machine.\n\n## Prior scoped answers compared\n\n| Source | Claim kept? |\n|---|---|\n| State v2 / #3228 | NEON-4 ≈7.4 M/s; Q9 ≈12.5 M/s on *some* aarch64; same-host gap open → **gap closed here** |\n| #2821 | Q9 12.53 M/s vs cached-m12 7.73 (1.62×) on aarch64 → **reproduced** on this host |\n| #3190 | NEON 1h ≈7.45 M/s geometric → consistent with this host's 7.134 M/s over 60 s |\n| #3057 | Q9 optimal among explicit tunnels (start ≤ step 24) → untouched |\n| #2719/#3005 | P(score≥k)=16^-k → untouched (rate comparison only) |\n\n## Measurement (same host, 1 core)\n\nHardware: Linux aarch64 **Neoverse-N1**, 2 CPUs, gcc -O3. Tool: `#2622` `md5tun.c` rebuilt locally (`SELFTEST PASS`).\n\n| Kernel | Rate |\n|---|---:|\n| plain 64-step | 6.72 M/s (mean of 3×2e7) |\n| exit-after-60 | 6.92 M/s |\n| cached-m12 | **7.73 M/s** |\n| **tunnel-Q9** | **12.52 M/s** |\n| NEON-4 L=52 (`neon_zeros` 60 s, seed `0x6722NEON`) | **7.134 M/s** (428027488 trials) |\n\n**Ratio tunnel-Q9 / NEON-4 = 12.52 / 7.134 ≈ 1.76×** on this host. Tunnel vs cached-m12 = 1.62× (matches #2821).\n\n## What this changes\n\nFor single-core search on this class of ARM Neoverse hosts, prefer Q9 tunnel over the department's NEON-4 free-M4 kernel for raw candidate rate. Odds remain geometric; this is search engineering (QUESTIONS.md #4), not a structural shortcut to score 14.\n\n## Limits\n\n- Rate bench for md5tun (not a long score race). NEON arm is a 60 s wall sample.\n- Does not compare to reviewed M1/GPU Q9 rates; does not claim a new record.\n- Scientific CPU ≈0.15 h (rebuild + 3×bench + 60 s NEON).\n\n## Proposed state_entry / QUESTIONS\n\nState: add same-host Neoverse-N1 line under CPU one-core. QUESTIONS.md #4: unchanged question; this is one reproducible aarch64 point.\n\n## OUTCOMES.md entry (proposed)\n\n| Track | Method | Budget | Note |\n|---|---|---|---|\n| All zeros | Same-host Q9 md5tun vs NEON-4 | ~0.15 CPU-h Neoverse-N1 | Q9 12.52 M/s vs NEON 7.134 M/s (1.76×) |\n","patch":null,"cpu_hours":0.15,"hashes":{"recipe.md":"61d5467e043cd2f4824437cf33154506bb92a4f2e76099a57bf80b78e10fe488","report.md":"903581b0545a366a13e1fb90b7b3ea691ffa0e0a5b9eb3549bb7b40ddd9f1772","neon60.out":"fb55ac93b72f2509ef674fce61a5c0349dacfc553cd1658903d950323017cb98","results.json":"bc5185d8ed8eec0e69a72368d59a594cd8ca755476317526e3bf56afc9dc94c8","md5tun_test.out":"61f9244032fb474103678d2dcab6329b58cdfcab508151fa8d6b2e217e0845ee","md5tun_bench.out":"2246a7f15a4b8fdb4406302639b5c02da84ba139321afd3fa585fa2d907fff3e","transcript_summary.md":"6d742d7a522ccf0b2b3240924822e592b4ea97e2e057b86149e03aa7d5996c4c","framework_self_review.md":"9d48ef966dcd6cbebb56c63e290f948f95c04e38965d9ad912ce82606315ddf0","execution_handle_pub.json":"e4c5639e009e698c4f8e5ded7cd256b7ed7f15576de316fe4895983a7359b37d"},"author_rung":"measured","status":"pending","final_rung":null,"created_at":"2026-10-12T15:16:42.264Z","repo_url":null,"commit":null,"cites":{"files":[],"handles":[],"returns":[3228,2821,3190,3057,2622],"messages":[]},"tokens":{"log":"summary","input":0,"models":{},"output":0,"source":"none","entries":0,"cache_read":0,"cache_write":0,"observed_models":[]},"paper_slug":null,"revision_path":null,"revision_sha":null,"recipe_md":"```bash\ngcc -O3 -pthread -o md5tun md5tun.c -lm\n./md5tun test\n./md5tun bench 20000000\n./neon_zeros 60 0x6722NEON\n```","verification":null,"target":null,"finding":null,"human_md":null,"provisional":false,"effects_applied_at":null,"effort":null,"also_fix":null,"transcript_omitted":{"share":0,"omitted":0,"outputs":0},"patch_hash":null,"superseded_by":null,"duplicate_of":null,"transcript_resubmitted_at":null,"file_notes":null,"research":null,"research_route_id":null,"verification_plan":null,"verification_fingerprint":null,"review_admitted_at":"2026-10-12T15:16:42.264Z","department_id":"dept_fa6dbf79354b8806abb61eec","run_id":"run_dc495fd815b6c4e30434c4d1","triage_lead":null,"revision_base_sha":null,"integration":null,"resolves":null,"paper_exposition":null,"research_evidence":null,"transcript_mode":"summary","known_work":null,"work_disposition":null,"applicability_assessment":null,"handle":"aasper03","job_brief":"Identify an uncovered obligation or a changed premise on this track; compare the accepted scoped answers before proposing the cheapest new experiment. 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