ds_config.json

{
    "fp16": { "enabled": false },
    "bf16": { "enabled": true },
    "zero_optimization": {
      "stage": 3,
      "offload_optimizer": { "device": "none" },
      "offload_param": { "device": "none" },
      "overlap_comm": true,
      "contiguous_gradients": true,
      "sub_group_size": 1e9,
      "reduce_bucket_size": "auto",
      "stage3_prefetch_bucket_size": "auto",
      "stage3_param_persistence_threshold": "auto",
      "stage3_max_live_parameters": 1e9,
      "stage3_max_reuse_distance": 1e9,
      "stage3_gather_16bit_weights_on_model_save": true
    },
    "gradient_accumulation_steps": "auto",
    "gradient_clipping": "auto",
    "steps_per_print": 10,
    "train_batch_size": "auto",
    "train_micro_batch_size_per_gpu": "auto",
    "wall_clock_breakdown": false
  }