try:
    from colossalai.zero.shard_utils import TensorShardStrategy
except ImportError:
    # colossalai > 0.2.8
    from colossalai.legacy.zero import TensorShardStrategy

zero = dict(
    model_config=dict(shard_strategy=TensorShardStrategy(), tensor_placement_policy="auto", reuse_fp16_shard=True),
    optimizer_config=dict(gpu_margin_mem_ratio=0.8, initial_scale=16384),
)