message: saner default for consolidate command.  prefix filename with model (so sorting still works)
diff: @@ -143,7 +143,7 @@ def train_loop():
  def consolidate(
  input_directory: 'where to look for games'='data/selfplay/',
  - max_positions: 'how many positions before discarding games'= 2500000,
  + max_positions: 'how many positions before discarding games'= 250000,
  before_model: 'consolidate games only for models before this.'=1):
  import ds_wrangler, numpy as np
  @@ -174,14 +174,13 @@ def consolidate(
  bigchunks.append(current)
  - for idx, c in enumerate(bigchunks):
  + for idx, c in enumerate(tqdm(bigchunks)):
  datasets = [DataSetV2.read(filename.replace('.meta','.gz')) for filename in c]
  combined = DataSetV2(
  np.concatenate([d.pos_features for d in datasets]),
  np.concatenate([d.next_moves for d in datasets]),
  np.concatenate([d.results for d in datasets]))
  - combined.write(os.path.join(model, "combined-%d.gz" % idx))
  - print("%s: Wrote %d consolidated positions" % (model, combined.data_size))
  + combined.write(os.path.join(model, "%s-combined-%d.gz" % (os.path.basename(model), idx)))
  parser = argparse.ArgumentParser()
  