Experimental work: CRAWLER-SAFE TRAIN/EVAL SURFACE (x5): Crawler-safe training/eval surface around a widened shared-crawler stack with final int6 and int8 checks. Specs: model_dim=512; vocab_size=1024; num_heads=8; num_kv_heads=4; BigramHash; XSA. 12L GQA MIXED-BIT TOWER (x4): 12-layer GQA tower: 8/4 GQA, RoPE-16, Bigram 2048, XSA on the last 11 layers, and mixed-bit packaging. Specs: num_layers=12; num_heads=8; num_kv_heads=4; rope_dims=16; eval_seq_len=2048; train_seq_len=2048.
Neural work: CRAWLER ABLATION CONTROL SET (x1): architecture family detected in measured rows; exact flags are preserved in the row details. COMPRESSION PACKAGING EXPERIMENT (x1): architecture family detected in measured rows; exact flags are preserved in the row details. 12L GQA MIXED-BIT TOWER (x1): 12-layer GQA tower: 8/4 GQA, RoPE-16, Bigram 2048, XSA on the last 11 layers, and mixed-bit packaging. Specs: num_layers=12; num_heads=8; num_kv_heads=4; rope_dims=16; eval_seq_len=2048; train_seq_len=2048.
Day 022 measured 16 architecture/test rows against VAL_BPB, with 8 valid rows and 0 TTT leakage readings excluded. Techniques to copy/reference: BigramHash; XSA; RoPE; crawler loop rope scales; instruction bottleneck; int6 roundtrip; int6 sliding-window eval; int8 zlib roundtrip.
No new personal best. Best valid of the day = 1.1057 (train_seed444.log); best-before-today = 1.0672 still stands. 8 crash-class outliers (6.68, 4.77) excluded.