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# SPDX-License-Identifier: Apache-2.0
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# Licensed under the Apache License, Version 2.0 (the "License");
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# http://www.apache.org/licenses/LICENSE-2.0
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import torch
from megatron.core import ModelParallelConfig

from cosmos_predict1.utils.lazy_config import LazyDict


def create_model_parallel_config():
    model_parallel = ModelParallelConfig(bf16=True, params_dtype=getattr(torch, "bfloat16"))
    model_parallel.tensor_model_parallel_size = "${model.model_parallel.tensor_model_parallel_size}"
    model_parallel.context_parallel_size = "${model.model_parallel.context_parallel_size}"
    model_parallel.sequence_parallel = "${model.model_parallel.sequence_parallel}"
    MODEL_PARALLELS = LazyDict(
        dict(
            model_parallel_bf16=model_parallel,
        ),
        flags={"allow_objects": True},
    )
    return MODEL_PARALLELS["model_parallel_bf16"]