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r18-native-v3 - pretrain-21457

Round-18 (2011 cutoff) native Nanochrono 2.02B trained from scratch (no parent model), CE only, fp32 masters + bf16 autocast.

  • base: none (random init)
  • datasets: emily9589/sn38-r18-2011-tok32k (strict <=2011 wiki / WMT news / PG-19 / peS2o / Reddit / Gutenberg)
  • run: pt_native_v3, step 21457 of 21458, 45.00B tokens seen
  • lr 0.0003 cosine, batch 2097152.0 tokens, seq 2048, seed 20261027
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