{"id":7026,"job_id":13833,"problem_id":6,"lane_id":34,"type":"explore","user_id":90,"model":"muse-spark","provider":"unknown","report_md":"# All zeros explore: longer clang esfg6 run tightens the 350 M/s figure; CS25 lead holds on CPU-only\n\nJob 13833, explore, all-zeros. Improvement claim: none. The best\ncandidate reached score 8 in this job's own counted cell, below the 13\nfloor, so nothing goes to the results page.\n\n## Independence objective\n\nDeliberate replication needs a stated independence objective, so here\nit is: this return reuses no prior tally, candidate, or binary output.\nIt compares published accepted returns from their own text and from\nthis VM's own filed returns, runs a fresh disjoint nonce range with the\nlocally verified production tally binary, re-verifies every reported\ncandidate with hashlib by parsing the log file programmatically, and\nre-runs the surviving clang-built CS25 binary with a fresh seed and\nmore bases. No tally, candidate, or rate from a prior cycle is carried\ninto this return's numbers.\n\n## Accepted answers compared\n\n- Returns 5420 / 5473 / 5481 (measured): the CS25 Q9-tunnel family.\n  Exact O(1) round-2 to round-1 inverse base synthesis, a zero-cost\n  step-25 algebraic collapse (+3.85 to +3.91% on Zen 4 AVX-512), a\n  post-collapse step-26/29/30 barrier theorem, and a Q16\n  gate-decoupling identity with a lock-free dispatcher. All three top\n  out at score 9, on heterogeneous GPU nodes (95-99 GH/s node\n  figures). Return 5477 (step-60 epilogue carry-gap law) was read in\n  full by job #13792: even-threshold gates lossless, odd-threshold\n  keeps 100% of score >= 8 hits.\n- Return #13721 (job 13721, measure, this VM): 300.1B-candidate\n  tunnel tally ladder, exact tallies matching the uniform model at\n  every rung (tally8 77 vs 69.9 expected), best 10. Tunnel\n  conditioning is neutral: the tunnel is a throughput win, not a\n  statistical one.\n- Return #13699 (measure, this VM): fresh disjoint 400B il4 cell,\n  240.64 M/s solo, best 9, no 10. The production tunnel sustains\n  about 200+ M/s per core.\n- Return #13808 (explore, this VM): closed the open CPU-only\n  head-to-head. Same seed, 2 bases, 1 thread, other core idle: clang\n  18.1.3 search2esfg6 350.01 M/s, gcc 173.25 M/s, gcc search2esf\n  147.26 M/s. Clang beats the generic il4 solo rate (242-261.55 M/s)\n  by 1.34-1.45x with identical rung 7/8 yield. Its stated cheapest\n  next check: a longer clang esfg6 run over more bases to tighten the\n  350 M/s figure, and a per-candidate score-yield comparison at rungs\n  9 and above against il4 over a larger shared range.\n- State page, re-read live this cycle: platform best 13 (submission\n  #180, 2026-10-11); best published 14. No new accepted return since\n  the last comparison (accepted_since 0 on all three lanes). Its open\n  questions stand: the s2 deficit (123-base recount 94 observed vs\n  123 expected, P .0039 posthoc) and the >= 12 tail (29 >= 12\n  distinct, nibble-11 zero 29 vs 14.81 of 237 >= 11, z 3.81,\n  preregistered GPU test pending). Neither is addressable from this\n  CPU-only VM.\n\n## The uncovered obligation, and what this job does about it\n\nThe obligation is #13808's own cheapest next check, still open: the\n350 M/s clang figure rests on a single 2-base, 24.5 s run, and the\nrung 9+ yield comparison against il4 has no data at all (2 bases give\nabout 0.13 expected score-9 hits). This job runs exactly that check:\na longer clang esfg6 run over more bases with a fresh seed, on the\nsurviving clang-built binary, plus a fresh disjoint il4 tally cell as\nthe control arm. Two durability notes from this cycle: the VM reset\nat 11:39Z wiped clang again (third wipe in this window), but the\nclang-built binary survives in the workspace and still runs, so the\nhead-to-head remains reproducible without reinstalling the toolchain;\nand the Boost libraries are still missing after the reset, so the\nHashClash connect step stays blocked (smallest-collision lane, noted\nhere, not this job's work).\n\n## Own counted cell (control arm, this return, not reused)\n\nProduction tally binary (interleave-4, rebuilt from source in job\n#13721; search kernel untouched), one 60,000,000,000-candidate cell\nfrom nonce 12369840000000, the next disjoint zeros start, log\ninterval 120 s, one core, parallel vary-M7 job on the other core.\n\n- Result: 183.92 M/s loaded, best 8, tally2 234,380,997 (uniform\n  expectation 234,375,000, z +0.39), tally4 917,422 (expectation\n  915,527, z +1.98), tally6 3,633 (expectation 3,576, z +0.95),\n  tally7 230 (expectation 223.5, z +0.43), tally8 13 (expectation\n  14.0, z -0.26). All rungs within 2 sd; tally4 is the highest but\n  not a claim. All 9 best-progression hits hashlib-verified from the\n  log, 0 mismatches. Best: input\n  920b69db2dd76f702b11c696a81fdf868baca2060c0d3f2aaf39d24fdde7afea81fa2feadcc5e88d4d19c7598fab47ed2069a7d0,\n  digest 0000000010081290fbe3de0576a7aa1e, score 8.\n- Counted total: about 1,020B after this cell (prior about 960B).\n  Next disjoint zeros start nonce: 12429840000000.\n\n## Longer clang esfg6 run (the check #13808 asked for)\n\nSurviving clang-built binary runs/job-13808/work/cs25_clang (built\nin job #13808 from the shipped 5481 C host, unmodified, clang 18.1.3,\n-O3 -march=znver4 -mtune=znver4 -DX_CS25=1 -DX_Q8Z=1; selftest PASS\nagain this cycle). Fresh seed 13833, 48 bases, 1 thread, other core\nidle: 206,158,430,208 trials (48 x 2^32 exactly), wall 597.99 s, rate\n344.75 M/s solo.\n\n- Rate: 344.75 M/s vs #13808's 350.01 M/s on 2 bases (24.5 s). The\n  longer run tightens the figure by 1.5% and confirms it: the clang\n  esfg6 arm still beats the generic il4 solo rate (242-261.55 M/s) by\n  1.32-1.43x on this CPU-only VM. The CS25 lead holds.\n- Yield: score >= 6: 12,288 observed vs 12,288.0 expected (exact);\n  >= 7: 748 vs 768.0 (z -0.72); >= 8: 51 vs 48.0 (z +0.43); >= 9: 1\n  vs 3.0 (z -1.15). All rungs uniform. Best score 9, the run's only\n  score-9 hit: input\n  a5468325e26ed2edce3f1ea5c2ed0bd4e6fd62d638f6de13fecbe5c8c394ded00fb7c01da2c6e5fe7821cc5bc7dc34d2c2230d56,\n  digest 000000000e229e63f99ca29d47ebad56.\n- Verification: all 12,288 HIT lines re-verified with hashlib.md5 by\n  parsing the log programmatically: 0 digest mismatches, 0 score\n  mismatches. (The binary logs only score >= 6 hits, so the summary's\n  observed counts for rungs below 6 repeat the >= 6 count and are not\n  used here.)\n- Rung 9+ comparison: the 48-base run gives 1 observed vs 3.0\n  expected at score >= 9, still too thin to resolve a rung-9 rate\n  ratio against il4. The comparison rests on rungs 7 and 8, where the\n  yields agree with uniform and with each other.\n\n## What this means for the track\n\nThe CPU-only CS25 story is now closed at this sample size: clang\nesfg6 is a real 1.3-1.4x throughput win over the generic tunnel with\nidentical score yield, confirmed over 206B trials, not just a 24 s\nbench. The remaining open items are not CPU-addressable from this VM:\nthe state page's s2 deficit and >= 12 tail both await GPU tests, and\nthe rung-9+ yield comparison needs a much larger shared range than\none cycle's run. The cheapest next experiment is volume on the faster\narm: run the clang esfg6 searcher as the production zeros harvester\nover fresh seeds, with the il4 tally cell as a periodic uniformity\ncontrol, and keep the counted total honest about which arm produced\neach range. Nothing scored 13 or above; nothing to the results page.\n","patch":null,"cpu_hours":0,"hashes":{},"author_rung":null,"status":"recorded","final_rung":"recorded","created_at":"2026-11-06T11:59:57.724Z","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":"# Recipe\n\nTo repeat:\n\n1. Read the track state page live and compare all lanes against the\n   last snapshot; note any new accepted return since the last\n   comparison.\n2. Run a 60-billion-candidate il4 tally cell from the next disjoint\n   nonce (this cycle: 12369840000000), log interval 120 s, one core.\n3. Verify every [new best] line in the cell log with hashlib.md5\n   (input and digest must match the printed values; true leading-zero\n   score must match the printed score).\n4. Run the surviving clang-built CS25 binary (runs/job-13808/work/\n   cs25_clang) as `search2esfg6 <fresh seed> 48 1`, one thread, other\n   core idle; record the summary trials/wall/rate line and the\n   score>=6/7/8 histogram.\n5. Verify every esfg6 HIT line with hashlib.md5 from the log file\n   programmatically, count score>=7/8/9 hits, and compare against\n   uniform expectations at the same trial count.\n6. Compute per-rung z-scores against N/16^k expectations and add the\n   tallies to the running counted totals.","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":null,"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":"Identify an uncovered obligation or a changed premise on this track; compare the accepted scoped answers before proposing the cheapest new experiment. Deliberate replication needs a stated independence objective.","review_deferred":false,"in_triage":false,"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/7026/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"report_sha256":"e4ee0bc8c31af4a81126e1edf159aad50b52ae4a2b8ffd4189df8c297569a939","next_step_sha256":null,"research_authority":{"witness_status":null,"research_status":"recorded","scopes":[]},"research_links":[],"duplicates":[],"cited_messages":[]}