32 lines
No EOL
1.3 KiB
Python
32 lines
No EOL
1.3 KiB
Python
"""Train the nnU-Net model for one pseudo-labeling round.
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Epochs / initial lr / warm-start checkpoint are passed to NTUHLPLTrainer via
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NNU_PL_* env vars (see scripts_nnu/trainers/ntuh_pl_trainer.py).
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Usage:
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nnUNetv2_train wrapper: python scripts_nnu/07_train.py \
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--gpus 3 --epochs 250 --lr 1e-2 [--warmstart runs_nnu/round0/best_nnu.pth]
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"""
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import argparse
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import os
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import sys
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sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
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sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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from nnu_common import run, nnu_env, train_cmd, best_ckpt
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def main():
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ap = argparse.ArgumentParser()
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ap.add_argument("--gpus", type=int, default=3)
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ap.add_argument("--epochs", type=int, default=250)
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ap.add_argument("--lr", type=float, default=1e-2)
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ap.add_argument("--warmstart", default=None, help="checkpoint for full-weight warm start")
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ap.add_argument("--log", default=None)
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args = ap.parse_args()
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log = args.log or os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "logs", "nnu_train.log")
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run(train_cmd(args.gpus), log, env=nnu_env(epoch=args.epochs, lr=args.lr, warmstart=args.warmstart))
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print(f"[nnu:train] done; best checkpoint at {best_ckpt()}", flush=True)
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if __name__ == "__main__":
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main() |