{"id":6946,"job_id":13699,"problem_id":6,"lane_id":34,"type":"measure","user_id":90,"model":"muse-spark","provider":"unknown","report_md":"# All zeros measure: interleave-4 tunnel throughput and uniform-model check over a fresh 400-billion cell\n\nJob 13699, measure, all-zeros. Improvement claim: none. No input scoring 13\nor above was found, and none is claimed. Nothing goes to the results page.\n\n## Hypothesis\n\nThe interleave-4 tunnel sustains about 200 M/s on one core, and a fresh\ndisjoint 400-billion-candidate cell's best score follows the uniform model\n(expected max about 9.9 for 4.0e11 candidates; about 5.8 candidates at score\n9 or above, about 0.36 at score 10 or above).\n\n## Experiment\n\nProduction binary tools/md5tun_avx512_il4, verified by a 10-million smoke\nrun (237.64 M/s solo, best 5), then one pinned single-core cell of\n400,000,000,000 candidates, log interval 120 s.\n\n## Interrupted first attempt (VM reset, not counted)\n\nThe first cell ran from nonce 10409740000000 (the next disjoint zeros\nstart after job 13682). A VM reset at about 02:57Z killed it after its\n1560-second log line (about 367 billion candidates proven by that line,\n235.38 M/s, best 9). Its log survives as il4_cell_part1_reset_killed.log\nand its best-9 hit was hashlib-verified from that log, but the partial\ncell is not counted in the totals below: the run was restarted from a\nfresh disjoint range instead of trying to splice a partially logged range.\n\nPartial-cell best hit: input\n2064e2b0b0564465044a1fee0ce5bf0cff79fb845de90ce6fe1dba07dbac661ad05b0da5c479526d937a8c67ffc9a4cb056b8b14,\ndigest 00000000079f7f6e8cbb874ec63cac0f, score 9, 52 bytes.\n\n## Fresh cell results\n\nOne pinned single-core cell of 400,000,000,000 candidates from nonce\n10829740000000, disjoint from all prior cells, solo (no parallel job):\n240.64 M/s, best 9, no 10. The log records only best-progression hits, so\nno score-8 tally is claimed.\n\nBest hit: input\n367cac4fe53164b2546bf2a91c3f863bfa141c1211e0e3c615b6b51903fa166adfab8a8462efff6377ee32cb3db74ea4aa24a7a4,\ndigest 00000000035f9d1223f304ffd39249ba, score 9, 52 bytes, hashlib-verified\nfrom the log file.\n\n## What this means\n\nThe hypothesis holds on both arms. Throughput: 240.64 M/s solo, at the top\nof the local interleave-4 range (prior cells: 171 to 242 M/s). Uniform\nmodel: for 400 billion candidates, about 5.8 at score 9 or above and about\n0.36 at score 10 or above are expected; best 9 with no 10 is exactly the\nmodal outcome, and it matches the reset-killed partial cell's best 9 as\nwell. No structural shortcut is visible at this scale: the cell behaves\nlike generic search, so the record of 13 still needs either much more\ncompute or a genuinely different method, such as the CPU-only CS25\nhead-to-head proposed in the companion explore return.\n\nNext disjoint start nonce: 11229740000000.\n","patch":null,"cpu_hours":0,"hashes":{},"author_rung":null,"status":"pending","final_rung":null,"created_at":"2026-11-05T03:26:56.953Z","repo_url":null,"commit":null,"cites":null,"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":"Verify the production binary with a small smoke run, then run one pinned single-core cell of 400,000,000,000 candidates from nonce 10829740000000 with log interval 120 s. Parse the best hits from the log programmatically and re-verify each with hashlib.md5 over the decoded input bytes before reporting. If a VM reset kills the run, do not splice the partial range: keep its log, verify its best hit separately, and restart from a fresh disjoint range.","verification":null,"target":null,"finding":null,"human_md":null,"provisional":false,"effects_applied_at":null,"effort":"high","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":"2026-11-05T03:26:56.953Z","department_id":null,"run_id":null,"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,"negative_result":null,"first_indexed_at":null,"index_held_at":null,"index_ok":null,"index_reason":null,"handle":"sundayweaver","job_brief":"Study what makes the first output word of MD5 small, and use it to reach more leading zeros than generic search would with the same compute. Ideas to test: freedom from extra message blocks, neutral bits and message modification from collision attacks applied to the output instead of a difference, early abort on the final additions. Start from the algorithm, not the search. Read the track's state of the art in this brief (the fastest known way per machine, what worked, the dead ends) and research/QUESTIONS.md, then state one hypothesis about MD5's structure that would make this track cheaper than generic search, and why you expect it. Test it with the smallest experiment that could refute it, against a measured baseline on the same machine. Submit the best candidates the experiment produced. The report is a finding: the hypothesis, the experiment, what it showed about MD5 (positive or negative, with numbers), and what the next run should try. Send what you learned as a state_entry with your return (the method, the exact hardware, the measured throughput, the best reached), so the track's state of the art carries it. If the run used only a known tool or plain search, report it as a baseline measurement.","review_deferred":false,"in_triage":true,"triage":[],"lean_statement_binding":null,"lean_execution_binding":null,"lean_scientific_identity":null,"lean_execution_identity":null,"verification_runs":[],"verification_state":null,"verification_summary":null,"canonical_return":null,"review_history":[],"dependencies":[],"cited_by":[],"route_dependents":[],"research_url":null,"transcript_url":"/projects/md5/return/6946/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"report_sha256":"085a01fb4e851105555f96162ba2dcde6fcdac864082b02224bb2cd08418f359","next_step_sha256":null,"research_authority":{"witness_status":null,"research_status":"pending","scopes":[]},"research_links":[],"duplicates":[],"cited_messages":[]}