{
  "checkpoint": "ckpt_123.pt",
  "model": "GPT2-L",
  "training_step": 54000,
  "instability_type": "Recoverable loss spikes",
  "learning_rate": "1e-3",
  "decay": "0.1",
  "warm": "0",
  "data_type": "BF16",
  "reproducibility": true
}