v6.0.0 — G5 continuation: kv4i1404_g00581_29ea3c73 (W_ERGOLIGHT_v2 74.40, 16/16 load cases)

Best individual kv4i1404_g00581_29ea3c73: W_ERGOLIGHT_v2 74.40 (Tier 2, h 0.2 mm), 88.4 g, worst margin 1.094, 16 of 16 RS-karambit-v5 load cases met. The v5.0.0 winner, re-evaluated on the same platform, scores 59.34. Status: computational design; not built, printed or physically tested.

The README, the paper docs/g5/paper/g5-v6.0.0.pdf and the cad/ kit are generated from evidence/g5/v6.0.0/release.json (PR #192).

• Cohort of record v6.0.0, with the frozen G5.0 decoder of v5.0.0 unchanged (c63629d4b310…, freeze bf3e37fa; the crate stays 5.0.0).
  • Best individual: kv4i1404_g00581_29ea3c73, rank 1 of the Tier-2 ranking.
  • Score and loads: W_ERGOLIGHT_v2 74.40 (hand multiplier E 0.922, worst-margin multiplier W 1.000); worst margin 1.094 over the plate meshes; 16 of 16 load cases met.
  • Mass: 88.4 g.
  • Against the v5.0.0 winner, re-evaluated on the same platform: score 59.34 → 74.40; worst margin 1.014 → 1.094; mass 83.3 → 88.4 g; cases met 16 → 16.
  • Receipt: evidence/g5/v6.0.0/release.json, written by g5-release receipt-v6, which recomputes the whole lineage and fails closed.
• The continuation:
  • Warm start: the 1,508 final v5.0.0 elites were re-evaluated on linux/amd64, giving 131 niches with a best of 63.36.
  • Rounds: 247 warm-started islands ran 20 rounds on xbabe3 and xbabe4, 296,400 evaluations in all. Each round was merged by the hub into a pool lineage that the receipt recomputes byte for byte. The best rose 63.36 → 75.54 on the search grid.
  • Control: 4 fresh-start islands × 4,800 evaluations, with no pool and no migration. Best 59.56.
• One platform of record. Static x86_64 binaries run natively on Linux and in a linux/amd64 container under Rosetta on the Mac.
  • The same island is byte-identical on all four hosts.
  • epoch01/xbabe4/island101 re-run on xbabe2 reproduces its history bit for bit.
  • The v5.0.0 limit (arm64 and x86 not bit-identical) no longer applies.
• FEM renderings of every load case (g5-fem-fields): all 16 load cases of kv4i1404_g00581_29ea3c73 rendered from their own fields; the 28 scored values they re-solve match the receipt bit for bit. The analytic cases get an independent hex8 FE check: grip squeeze score model SF 2.32, hex8 FE 23.78; guard push score model SF 26.39, hex8 FE 8.85; teeth score model SF 2.38, hex8 FE 2.72.
• The fitness budget (g5-release fitness): where the 100 points of the score go. 74.4 earned (structural 45.3, mass 11.0, cutting geometry 11.0, build and form 7.1), 6.3 lost to the multipliers and 19.3 unmet credit.
  • The ranked bars show each term's points against the most it could earn.
• Fleet: the search ran one island per core complex on the Threadripper hosts, following an early pilot. A controlled measurement afterwards (fleet/sizing.json) shows that one island per core would have given 2.9× the throughput. The result is deterministic either way; the cost was evaluations, not correctness. The glibc malloc tunables cut page faults 2.5× with identical outputs.
• GPU spike, not adopted. The search records must stay exact CPU arithmetic, and Tier 1 is 90 % of island time. A perfect pre-screen costing nothing would give at most 3.1× more evaluations per hour; any real predictor costs time and misses designs, so the 3× bar for adopting one is out of reach. The GPUs render.
• Corrections to the v5.0.0 paper (none changes a v5.0.0 result):
  • "E⁵ = 0.222" had no meaning: E is already the fifth power of the hand factors' weighted product. v6 also states the product inside the power.
  • The marginal points per gram used E⁵ again: 0.063 → 0.211.
  • The promotion window is 256 Tier-0 scores (warm-up 16), not 128.
  • Lloyd relaxation is 20 iterations of 16 samples per centre, not 12 of 64.
• New tools:
  • g5-continue (run, reeval, merge, screen);
  • g5-release receipt-v6 and fitness;
  • g5-fem-fields;
  • the shared archive module.
• Generated docs: the README, docs/g5/paper/g5-v6.0.0.pdf and the cad/ kit, all from the receipt.

Assets (sha256 in the receipt): the archives of every island and pool, the Tier-1 records of the final pool, and the winner's h 0.2 mm print and envelope meshes.