ds_config.json

{
    "zero_optimization": {
        "stage": 3,
        "contiguous_gradients": true,
        "stage3_max_live_parameters": 0,
        "stage3_max_reuse_distance": 0,
        "stage3_prefetch_bucket_size": 0,
        "stage3_param_persistence_threshold": 100,
        "reduce_bucket_size": 100,
        "sub_group_size": 100000000,
        "offload_optimizer": {
            "device": "cpu",
            "pin_memory": true
        },
        "offload_param": {
            "device": "cpu",
            "pin_memory": true
        },
        "stage3_gather_16bit_weights_on_model_save": true
    },
    "optimizer": {
        "type": "Adam",
        "params": {
            "lr": 0.00002,
            "betas": [
                0.9,
                0.999
            ],
            "eps": 1e-8,
            "weight_decay": 0
        }
    },
    "fp16": {
        "enabled": true,
        "auto_cast": false,
        "loss_scale": 0,
        "initial_scale_power": 32,
        "loss_scale_window": 1000,
        "hysteresis": 2,
        "min_loss_scale": 1
    },
    "train_batch_size": "auto",
    "train_micro_batch_size_per_gpu": "auto",
    "wall_clock_breakdown": false
}