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+# coding=utf-8
+# Copyright 2025 IBM and the HuggingFace Inc. team. All rights reserved.
+#
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""GraniteMoeHybrid model configuration"""
+
+from ...configuration_utils import PretrainedConfig
+from ...modeling_rope_utils import rope_config_validation
+from ...utils import logging
+
+
+logger = logging.get_logger(__name__)
+
+
+class GraniteMoeHybridConfig(PretrainedConfig):
+    r"""
+    This is the configuration class to store the configuration of a [`GraniteMoeHybridConfig`]. It is used to
+    instantiate an GraniteMoeHybrid model according to the specified arguments, defining the model architecture.
+
+    Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
+    documentation from [`PretrainedConfig`] for more information.
+
+
+    Args:
+        vocab_size (`int`, *optional*, defaults to 32000):
+            Vocabulary size of the GraniteMoeHybrid model. Defines the number of different tokens that
+            can be represented by the `inputs_ids` passed when calling [`GraniteMoeHybridModel`]
+        hidden_size (`int`, *optional*, defaults to 4096):
+            Dimension of the hidden representations.
+        intermediate_size (`int`, *optional*, defaults to 11008):
+            Dimension of the MLP representations.
+        num_hidden_layers (`int`, *optional*, defaults to 32):
+            Number of hidden layers in the Transformer decoder.
+        num_attention_heads (`int`, *optional*, defaults to 32):
+            Number of attention heads for each attention layer in the Transformer decoder.
+        num_key_value_heads (`int`, *optional*):
+            This is the number of key_value heads that should be used to implement Grouped Query Attention. If
+            `num_key_value_heads=num_attention_heads`, the model will use Multi Head Attention (MHA), if
+            `num_key_value_heads=1` the model will use Multi Query Attention (MQA) otherwise GQA is used. When
+            converting a multi-head checkpoint to a GQA checkpoint, each group key and value head should be constructed
+            by meanpooling all the original heads within that group. For more details, check out [this
+            paper](https://huggingface.co/papers/2305.13245). If it is not specified, will default to
+            `num_attention_heads`.
+        hidden_act (`str` or `function`, *optional*, defaults to `"silu"`):
+            The non-linear activation function (function or string) in the decoder.
+        max_position_embeddings (`int`, *optional*, defaults to 2048):
+            The maximum sequence length that this model might ever be used with.
+        initializer_range (`float`, *optional*, defaults to 0.02):
+            The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
+        rms_norm_eps (`float`, *optional*, defaults to 1e-06):
+            The epsilon used by the rms normalization layers.
+        use_cache (`bool`, *optional*, defaults to `True`):
+            Whether or not the model should return the last key/values attentions (not used by all models).
+            Only relevant if `config.is_decoder=True`.
+        pad_token_id (`int`, *optional*):
+            Padding token id.
+        bos_token_id (`int`, *optional*, defaults to 1):
+            Beginning of stream token id.
+        eos_token_id (`int`, *optional*, defaults to 2):
+            End of stream token id.
+        tie_word_embeddings (`bool`, *optional*, defaults to `False`):
+            Whether to tie weight embeddings
+        rope_theta (`float`, *optional*, defaults to 10000.0):
+            The base period of the RoPE embeddings.
+        rope_scaling (`Dict`, *optional*):
+            Dictionary containing the scaling configuration for the RoPE embeddings. Currently supports two scaling
+            strategies: linear and dynamic. Their scaling factor must be a float greater than 1. The expected format is
+            `{"type": strategy name, "factor": scaling factor}`. When using this flag, don't update
+            `max_position_embeddings` to the expected new maximum. See the following thread for more information on how
+            these scaling strategies behave:
+            https://www.reddit.com/r/LocalLLaMA/comments/14mrgpr/dynamically_scaled_rope_further_increases/. This is an
+            experimental feature, subject to breaking API changes in future versions.
+        attention_bias (`bool`, *optional*, defaults to `False`):
+            Whether to use a bias in the query, key, value and output projection layers during self-attention.
+        attention_dropout (`float`, *optional*, defaults to 0.0):
+            The dropout ratio for the attention probabilities.
+        embedding_multiplier (`float`, *optional*, defaults to 1.0): embedding multiplier.
+        logits_scaling (`float`, *optional*, defaults to 1.0): divisor for output logits.
+        residual_multiplier (`float`, *optional*, defaults to 1.0): residual multiplier.
+        attention_multiplier (`float`, *optional*, defaults to 1.0): attention multiplier.
+        num_local_experts (`int`, *optional*, defaults to 8): total number of experts.
+        num_experts_per_tok (`int`, *optional*, defaults to 2): number of experts per token.
+        output_router_logits (`bool`, *optional*, defaults to `False`):
+            Whether or not the router logits should be returned by the model. Enabling this will also
+            allow the model to output the auxiliary loss.
+        router_aux_loss_coef (`float`, *optional*, defaults to 0.001): router auxiliary loss coefficient
+        shared_intermediate_size (`int`, *optional*, defaults to 1024): intermediate size for shared experts.
+        position_embedding_type (`str`, *optional*): Positional embedding
+            type to be used; defaults to None. Allowed options: `[None, "rope"]`
+        layer_types (`List`, *optional*): list of strings to be used as layer types.
+            Allowed choices: "mamba", "attention".
+        mamba_n_heads (`int`, *optional*, defaults to 128):
+            The number of mamba heads used.
+        mamba_n_groups (`int`, *optional*, defaults to 1):
+            The number of the mamba groups used.
+        mamba_d_state (`int`, *optional*, defaults to 256):
+            The dimension the mamba latent state space.
+        mamba_d_head (`int`, *optional*, defaults to `"auto"`):
+            Head embedding dimension size.
+        mamba_d_conv (`int`, *optional*, defaults to 4):
+            The size of the mamba convolution kernel.
+        mamba_expand (`int`, *optional*, defaults to 2):
+            Expanding factor (relative to hidden_size) used to determine the mamba intermediate size.
+        mamba_chunk_size (`int`, *optional*, defaults to 256):
+            The chunks in which to break the sequence when doing prefill/training.
+        mamba_conv_bias (`bool`, *optional*, defaults to `True`):
+            Flag indicating whether or not to use bias in the convolution layer of the mamba mixer block.
+        mamba_proj_bias (`bool`, *optional*, defaults to `False`):
+            Flag indicating whether or not to use bias in the input and output projections (["in_proj", "out_proj"])
+            of the mamba mixer block.
+    ```python
+    >>> from transformers import GraniteMoeHybridModel, GraniteMoeHybridConfig
+
+    >>> # Initializing a GraniteMoeHybrid config
+    >>> configuration = GraniteMoeHybridConfig()
+
+
+    >>> # Accessing the model configuration
+    >>> configuration = model.config
+    ```"""
+
+    model_type = "granitemoehybrid"
+    attribute_map = {
+        "layers_block_type": "layer_types",
+    }
+    keys_to_ignore_at_inference = ["past_key_values"]
+
+    def __init__(
+        self,
+        vocab_size=32000,
+        hidden_size=4096,
+        intermediate_size=11008,
+        num_hidden_layers=32,
+        num_attention_heads=32,
+        num_key_value_heads=None,
+        hidden_act="silu",
+        max_position_embeddings=2048,
+        initializer_range=0.02,
+        rms_norm_eps=1e-6,
+        use_cache=True,
+        pad_token_id=None,
+        bos_token_id=1,
+        eos_token_id=2,
+        tie_word_embeddings=False,
+        rope_theta=10000.0,
+        rope_scaling=None,
+        attention_bias=False,
+        attention_dropout=0.0,
+        embedding_multiplier=1.0,
+        logits_scaling=1.0,
+        residual_multiplier=1.0,
+        attention_multiplier=1.0,
+        num_local_experts=8,
+        num_experts_per_tok=2,
+        output_router_logits=False,
+        router_aux_loss_coef=0.001,
+        shared_intermediate_size=1024,
+        position_embedding_type=None,
+        layer_types=None,
+        mamba_n_heads=128,
+        mamba_n_groups=1,
+        mamba_d_state=256,
+        mamba_d_head="auto",
+        mamba_d_conv=4,
+        mamba_expand=2,
+        mamba_chunk_size=256,
+        mamba_conv_bias=True,
+        mamba_proj_bias=False,
+        **kwargs,
+    ):
+        self.vocab_size = vocab_size
+        self.max_position_embeddings = max_position_embeddings
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+
+        # for backward compatibility
+        if num_key_value_heads is None:
+            num_key_value_heads = num_attention_heads
+
+        self.num_key_value_heads = num_key_value_heads
+        self.hidden_act = hidden_act
+        self.initializer_range = initializer_range
+        self.rms_norm_eps = rms_norm_eps
+        self.use_cache = use_cache
+        self.rope_theta = rope_theta
+        self.rope_scaling = rope_scaling
+        self.attention_bias = attention_bias
+        self.embedding_multiplier = embedding_multiplier
+        self.logits_scaling = logits_scaling
+        self.residual_multiplier = residual_multiplier
+        self.attention_multiplier = attention_multiplier
+        self.attention_dropout = attention_dropout
+        self.num_local_experts = num_local_experts
+        self.num_experts_per_tok = num_experts_per_tok
+        self.output_router_logits = output_router_logits
+        self.router_aux_loss_coef = router_aux_loss_coef
+        self.shared_intermediate_size = shared_intermediate_size
+        self.position_embedding_type = position_embedding_type
+
+        mamba_intermediate = mamba_expand * hidden_size
+
+        if layer_types is not None and any(layer_type not in ["mamba", "attention"] for layer_type in layer_types):
+            raise ValueError("layer_types must be a list strings in  [`mamba` `attention`]")
+
+        if mamba_intermediate % mamba_n_heads != 0:
+            raise ValueError("mamba_n_heads must divide mamba_expand * hidden_size")
+
+        # for the mamba_v2, must satisfy the following
+        if mamba_d_head == "auto":
+            mamba_d_head = mamba_intermediate // mamba_n_heads
+
+        if mamba_d_head * mamba_n_heads != mamba_intermediate:
+            raise ValueError("The dimensions for the Mamba head state do not match the model intermediate_size")
+
+        self.mamba_n_heads = mamba_n_heads
+        self.mamba_d_head = mamba_d_head
+        self.mamba_n_groups = mamba_n_groups
+        self.mamba_d_state = mamba_d_state
+        self.mamba_d_conv = mamba_d_conv
+        self.mamba_chunk_size = mamba_chunk_size
+        self.mamba_conv_bias = mamba_conv_bias
+        self.mamba_proj_bias = mamba_proj_bias
+        self.mamba_expand = mamba_expand
+        self.layer_types = layer_types
+
+        super().__init__(
+            pad_token_id=pad_token_id,
+            bos_token_id=bos_token_id,
+            eos_token_id=eos_token_id,
+            tie_word_embeddings=tie_word_embeddings,
+            **kwargs,
+        )
+
+        if self.position_embedding_type == "rope":
+            rope_config_validation(self)
+
+    # overwrite the function to use in `HybridMambaAttentionDynamicCache`
+    @property
+    def layers_block_type(self):
+        return self.layer_types if self.layer_types else ["mamba"] * self.num_hidden_layers
+
+
+__all__ = ["GraniteMoeHybridConfig"]