Record: GDN-Hybrid + Sliding Window Attention (cold-cache, 1.01710 BPB)

[joshkmartinez]

Summary

• restages Joshua's strongest still-authoritative clean SAFE_SUBMISSION artifact after the run055-reeval-gdn-bpbfix audit invalidated the later run051-safe031 score
• stages run039-safe019 (GDN-Hybrid + Sliding Window Attention, cold-cache 3-seed confirmation)
• uses pulled TensorPool artifacts as authority for the reported metrics

Headline metrics

• Lane: SAFE_SUBMISSION (fixed-predictor / no-TTT Track-A)
• 3-seed mean quantized_bpb: 1.01710033
• 3-seed std: 0.00133490
• Best seed: 1.016192
• Artifact size range: 15,522,111 to 15,981,262 bytes
• Max artifact bytes: 15,981,262 (< 16,000,000)

Per-seed authoritative results

Seed	Steps	EMA BPB	Quantized BPB	XSA BPB	Artifact bytes
314	2223	1.007670	1.016476	1.020950	15,522,111
777	2239	1.007192	1.016192	1.020919	15,814,260
2718	2240	1.009535	1.018633	1.023874	15,981,262
Mean	—	1.008132	1.01710033	1.021914	15,772,544.33

Why this restage exists

A later Joshua submission (run051-safe031, previously advertised at 1.01671233 BPB) was re-audited on TensorPool by run055-reeval-gdn-bpbfix. The pulled audit artifacts showed that score used non-canonical SentencePiece byte-accounting; the corrected mean quantized BPB was 1.19671450, not 1.01671233. That makes the later PR stale as a leaderboard claim. This PR restages the strongest still-authoritative Joshua-owned clean artifact instead.

Legality notes

• fixed int6 model
• no TTT / no SLOT / no eval-time adaptation in the scored artifact
• all pulled artifacts stayed below the 16 MB cap
• submission authority is quantized_bpb from pulled artifacts

Provenance

• TensorPool job: j-xpv7d0b38j
• Canonical bundle: ~/parameter-golf-project/jobs/run039-safe019/
• Pulled artifacts: ~/parameter-golf-project/state/tp-pulls/run039-safe019/artifacts/
• Architecture lineage: reproduction / confirmation of the GDN-Hybrid family previously seen in upstream PR Record: GDN-Hybrid (Gated DeltaNet + SWA) — val_bpb 1.028308 (3-seed cold-cache mean) #1545

[joshkmartinez]

Superseded by #1624 after pulled / showed corrected mean quantized val_bpb 1.01710023 with max counted bytes_total 16,060,435 (over the 16,000,000-byte cap). Restaging the strongest currently clean, audited Joshua artifact instead.