data:
  url: "https://database.lichess.org/standard/lichess_db_standard_rated_2024-04.pgn.zst"
  chunk_file: "dataset/stream_chunk.pgn"
  games_per_chunk: 5000
  max_length: 120
  val_split: 0.1

model:
  d_model: 512
  nhead: 8
  num_layers: 6

training:
  epochs: 10
  chunk_size: 50000
  epochs_per_chunk: 2
  batch_size: 32
  max_lr: 0.0005
  min_lr: 0.00001
  warmup_steps: 50000      # 10% of max_steps
  max_steps: 500000
  val_every_n_steps: 100   # Checkpoint frequently so you never lose progress
  patience: 50
  scheduler_t0: 100000     # T0 aligned with max_steps
  grad_accum_steps: 2
  log_file: "dataset/fast_training_log.txt"
  weights_path: "weights/chess_fast_best.pth"
  latest_weights_path: "weights/chess_fast_latest.pth"