Sync from v0.13

2026-01-19 10:38:50 +08:00
parent b2ef04d792
commit 5aef6c175a
3714 changed files with 854317 additions and 89342 deletions
--- a/vllm/model_executor/models/bamba.py
+++ b/vllm/model_executor/models/bamba.py
@@ -0,0 +1,511 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+"""Inference-only Bamba model."""
+
+# Added by the IBM Team, 2024
+from collections.abc import Iterable
+
+import torch
+from torch import nn
+from transformers import BambaConfig
+
+from vllm.attention.layer import Attention
+from vllm.compilation.decorators import support_torch_compile
+from vllm.config import CacheConfig, ModelConfig, VllmConfig
+from vllm.distributed import get_tensor_model_parallel_world_size
+from vllm.distributed.parallel_state import get_pp_group
+from vllm.model_executor.layers.activation import SiluAndMul
+from vllm.model_executor.layers.layernorm import RMSNorm
+from vllm.model_executor.layers.linear import (
+    MergedColumnParallelLinear,
+    QKVParallelLinear,
+    RowParallelLinear,
+)
+from vllm.model_executor.layers.logits_processor import LogitsProcessor
+from vllm.model_executor.layers.mamba.mamba_mixer2 import MambaMixer2
+from vllm.model_executor.layers.mamba.mamba_utils import (
+    MambaStateDtypeCalculator,
+    MambaStateShapeCalculator,
+)
+from vllm.model_executor.layers.quantization import QuantizationConfig
+from vllm.model_executor.layers.rotary_embedding import get_rope
+from vllm.model_executor.layers.vocab_parallel_embedding import (
+    ParallelLMHead,
+    VocabParallelEmbedding,
+)
+from vllm.model_executor.model_loader.weight_utils import default_weight_loader
+from vllm.sequence import IntermediateTensors
+
+from .interfaces import (
+    HasInnerState,
+    IsHybrid,
+    SupportsLoRA,
+    SupportsMambaPrefixCaching,
+    SupportsPP,
+    SupportsQuant,
+)
+from .utils import (
+    AutoWeightsLoader,
+    is_pp_missing_parameter,
+    make_empty_intermediate_tensors_factory,
+    make_layers,
+    maybe_prefix,
+)
+
+
+class BambaMLP(nn.Module):
+    def __init__(
+        self,
+        config: BambaConfig,
+        quant_config: QuantizationConfig | None = None,
+        bias: bool = False,
+        prefix: str = "",
+    ) -> None:
+        super().__init__()
+        self.gate_up_proj = MergedColumnParallelLinear(
+            input_size=config.hidden_size,
+            output_sizes=[config.intermediate_size] * 2,
+            bias=bias,
+            quant_config=quant_config,
+            prefix=f"{prefix}.gate_up_proj",
+        )
+        self.down_proj = RowParallelLinear(
+            input_size=config.intermediate_size,
+            output_size=config.hidden_size,
+            bias=bias,
+            quant_config=quant_config,
+            prefix=f"{prefix}.down_proj",
+        )
+        if config.hidden_act != "silu":
+            raise ValueError(
+                f"Unsupported activation: {config.hidden_act}. "
+                "Only silu is supported for now."
+            )
+        self.act_fn = SiluAndMul()
+
+    def forward(self, x):
+        x, _ = self.gate_up_proj(x)
+        x = self.act_fn(x)
+        x, _ = self.down_proj(x)
+        return x
+
+
+class BambaMixerDecoderLayer(nn.Module):
+    def __init__(
+        self,
+        config: BambaConfig,
+        layer_idx: int,
+        model_config: ModelConfig | None = None,
+        cache_config: CacheConfig | None = None,
+        quant_config: QuantizationConfig | None = None,
+        prefix: str = "",
+    ) -> None:
+        super().__init__()
+        self.config = config
+        self.mamba = MambaMixer2(
+            hidden_size=config.hidden_size,
+            ssm_state_size=config.mamba_d_state,
+            conv_kernel_size=config.mamba_d_conv,
+            intermediate_size=config.mamba_expand * config.hidden_size,
+            use_conv_bias=config.mamba_conv_bias,
+            use_bias=config.mamba_proj_bias,
+            n_groups=config.mamba_n_groups,
+            num_heads=config.mamba_n_heads,
+            head_dim=config.mamba_d_head,
+            rms_norm_eps=config.rms_norm_eps,
+            activation=config.hidden_act,
+            model_config=model_config,
+            cache_config=cache_config,
+            quant_config=quant_config,
+            prefix=f"{prefix}.mixer",
+        )
+
+        self.feed_forward = BambaMLP(
+            config, quant_config=quant_config, prefix=f"{prefix}.feed_forward"
+        )
+        self.input_layernorm = RMSNorm(config.hidden_size, eps=config.rms_norm_eps)
+        self.pre_ff_layernorm = RMSNorm(config.hidden_size, eps=config.rms_norm_eps)
+
+    def forward(
+        self,
+        hidden_states: torch.Tensor,
+        residual: torch.Tensor | None,
+        **kwargs,
+    ):
+        if residual is None:
+            residual = hidden_states
+            hidden_states = self.input_layernorm(hidden_states)
+        else:
+            hidden_states, residual = self.input_layernorm(hidden_states, residual)
+
+        output = self.mamba(hidden_states)
+        # Fully Connected
+        hidden_states, residual = self.pre_ff_layernorm(output, residual)
+        hidden_states = self.feed_forward(hidden_states)
+        return hidden_states, residual
+
+
+class BambaAttentionDecoderLayer(nn.Module):
+    def __init__(
+        self,
+        config: BambaConfig,
+        layer_idx: int,
+        model_config: ModelConfig | None = None,
+        cache_config: CacheConfig | None = None,
+        quant_config: QuantizationConfig | None = None,
+        prefix: str = "",
+    ) -> None:
+        super().__init__()
+        max_position_embeddings = getattr(config, "max_position_embeddings", 8192)
+        self.hidden_size = config.hidden_size
+        tp_size = get_tensor_model_parallel_world_size()
+        self.total_num_heads = config.num_attention_heads
+        assert self.total_num_heads % tp_size == 0
+        self.num_heads = self.total_num_heads // tp_size
+        self.total_num_kv_heads = config.num_key_value_heads
+        if self.total_num_kv_heads >= tp_size:
+            # Number of KV heads is greater than TP size, so we partition
+            # the KV heads across multiple tensor parallel GPUs.
+            assert self.total_num_kv_heads % tp_size == 0
+        else:
+            # Number of KV heads is less than TP size, so we replicate
+            # the KV heads across multiple tensor parallel GPUs.
+            assert tp_size % self.total_num_kv_heads == 0
+        self.num_kv_heads = max(1, self.total_num_kv_heads // tp_size)
+        self.head_dim = config.hidden_size // self.total_num_heads
+        self.q_size = self.num_heads * self.head_dim
+        self.kv_size = self.num_kv_heads * self.head_dim
+        self.scaling = self.head_dim**-0.5
+        self.max_position_embeddings = max_position_embeddings
+
+        rotary_dim = getattr(config, "attn_rotary_emb", self.head_dim)
+        config.rope_parameters["partial_rotary_factor"] = rotary_dim / self.head_dim
+
+        self.rotary_emb = get_rope(
+            head_size=self.head_dim,
+            max_position=max_position_embeddings,
+            rope_parameters=config.rope_parameters,
+            is_neox_style=True,
+            dtype=torch.get_default_dtype(),  # see impl of get_rope
+        )
+
+        self.qkv_proj = QKVParallelLinear(
+            config.hidden_size,
+            self.head_dim,
+            self.total_num_heads,
+            self.total_num_kv_heads,
+            bias=False,
+            quant_config=quant_config,
+            prefix=f"{prefix}.qkv_proj",
+        )
+        self.o_proj = RowParallelLinear(
+            self.total_num_heads * self.head_dim,
+            config.hidden_size,
+            bias=False,
+            quant_config=quant_config,
+            prefix=f"{prefix}.o_proj",
+        )
+
+        self.attn = Attention(
+            self.num_heads,
+            self.head_dim,
+            self.scaling,
+            num_kv_heads=self.num_kv_heads,
+            cache_config=cache_config,
+            prefix=f"{prefix}.attn",
+        )
+
+        self.feed_forward = BambaMLP(
+            config, quant_config=quant_config, prefix=f"{prefix}.feed_forward"
+        )
+        self.input_layernorm = RMSNorm(config.hidden_size, eps=config.rms_norm_eps)
+        self.pre_ff_layernorm = RMSNorm(config.hidden_size, eps=config.rms_norm_eps)
+
+    def self_attention(
+        self,
+        positions: torch.Tensor,
+        hidden_states: torch.Tensor,
+        **kwargs,
+    ) -> torch.Tensor:
+        qkv, _ = self.qkv_proj(hidden_states)
+        q, k, v = qkv.split([self.q_size, self.kv_size, self.kv_size], dim=-1)
+
+        q, k = self.rotary_emb(positions, q, k)
+        attn_output = self.attn(q, k, v)
+        output, _ = self.o_proj(attn_output)
+        return output
+
+    def forward(
+        self,
+        positions: torch.Tensor,
+        hidden_states: torch.Tensor,
+        residual: torch.Tensor | None,
+        **kwargs,
+    ):
+        if residual is None:
+            residual = hidden_states
+            hidden_states = self.input_layernorm(hidden_states)
+        else:
+            hidden_states, residual = self.input_layernorm(hidden_states, residual)
+
+        hidden_states = self.self_attention(
+            positions=positions,
+            hidden_states=hidden_states,
+        )
+        # Fully Connected
+        hidden_states, residual = self.pre_ff_layernorm(hidden_states, residual)
+        hidden_states = self.feed_forward(hidden_states)
+        return hidden_states, residual
+
+
+ALL_DECODER_LAYER_TYPES = {
+    "attention": BambaAttentionDecoderLayer,
+    "mamba": BambaMixerDecoderLayer,
+}
+
+
+@support_torch_compile
+class BambaModel(nn.Module):
+    def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
+        super().__init__()
+
+        config: BambaConfig = vllm_config.model_config.hf_config
+        model_config = vllm_config.model_config
+        cache_config = vllm_config.cache_config
+        quant_config = vllm_config.quant_config
+
+        self.config = config
+
+        self.vocab_size = config.vocab_size
+
+        self.embed_tokens = VocabParallelEmbedding(
+            self.vocab_size,
+            config.hidden_size,
+        )
+
+        def get_layer(prefix: str):
+            layer_idx = int(prefix.rsplit(".", 1)[1])
+            layer_class = ALL_DECODER_LAYER_TYPES[config.layers_block_type[layer_idx]]
+            return layer_class(
+                config,
+                layer_idx,
+                model_config,
+                cache_config,
+                quant_config=quant_config,
+                prefix=prefix,
+            )
+
+        self.start_layer, self.end_layer, self.layers = make_layers(
+            config.num_hidden_layers, get_layer, prefix=f"{prefix}.layers"
+        )
+        self.make_empty_intermediate_tensors = make_empty_intermediate_tensors_factory(
+            ["hidden_states", "residual"], config.hidden_size
+        )
+
+        self.final_layernorm = RMSNorm(config.hidden_size, eps=config.rms_norm_eps)
+
+    def embed_input_ids(self, input_ids: torch.Tensor) -> torch.Tensor:
+        return self.embed_tokens(input_ids)
+
+    def forward(
+        self,
+        input_ids: torch.Tensor,
+        positions: torch.Tensor,
+        intermediate_tensors: IntermediateTensors | None = None,
+        inputs_embeds: torch.Tensor | None = None,
+    ) -> torch.Tensor:
+        if get_pp_group().is_first_rank:
+            if inputs_embeds is not None:
+                hidden_states = inputs_embeds
+            else:
+                hidden_states = self.embed_input_ids(input_ids)
+            residual = None
+        else:
+            assert intermediate_tensors is not None
+            hidden_states = intermediate_tensors["hidden_states"]
+            residual = intermediate_tensors["residual"]
+
+        residual = None
+        for i, layer in enumerate(self.layers):
+            hidden_states, residual = layer(
+                positions=positions,
+                hidden_states=hidden_states,
+                residual=residual,
+            )
+
+        if not get_pp_group().is_last_rank:
+            return IntermediateTensors(
+                {"hidden_states": hidden_states, "residual": residual}
+            )
+        hidden_states, _ = self.final_layernorm(hidden_states, residual)
+        return hidden_states
+
+    def load_weights(self, weights: Iterable[tuple[str, torch.Tensor]]) -> set[str]:
+        stacked_params_mapping = [
+            # (param_name, shard_name, shard_id)
+            ("qkv_proj", "q_proj", "q"),
+            ("qkv_proj", "k_proj", "k"),
+            ("qkv_proj", "v_proj", "v"),
+            ("gate_up_proj", "gate_proj", 0),
+            ("gate_up_proj", "up_proj", 1),
+        ]
+
+        params_dict = dict(self.named_parameters())
+        loaded_params: set[str] = set()
+        for name, loaded_weight in weights:
+            if "rotary_emb.inv_freq" in name:
+                continue
+
+            if "A_log" in name:
+                name = name.replace("A_log", "A")
+
+            if ".self_attn." in name:
+                name = name.replace(".self_attn", "")
+
+            for param_name, weight_name, shard_id in stacked_params_mapping:
+                if weight_name not in name:
+                    continue
+
+                name = name.replace(weight_name, param_name)
+                # Skip loading extra bias for GPTQ models.
+                if name.endswith(".bias") and name not in params_dict:
+                    continue
+                # Skip layers on other devices.
+                if is_pp_missing_parameter(name, self):
+                    continue
+                param = params_dict[name]
+                weight_loader = param.weight_loader
+                weight_loader(param, loaded_weight, shard_id)
+                break
+            else:
+                # Skip loading extra bias for GPTQ models.
+                if name.endswith(".bias") and name not in params_dict:
+                    continue
+                if is_pp_missing_parameter(name, self):
+                    continue
+
+                param = params_dict[name]
+                weight_loader = getattr(param, "weight_loader", default_weight_loader)
+                weight_loader(param, loaded_weight)
+            loaded_params.add(name)
+        return loaded_params
+
+
+class BambaForCausalLM(
+    nn.Module,
+    HasInnerState,
+    SupportsLoRA,
+    SupportsPP,
+    IsHybrid,
+    SupportsQuant,
+    SupportsMambaPrefixCaching,
+):
+    packed_modules_mapping = {
+        "qkv_proj": [
+            "q_proj",
+            "k_proj",
+            "v_proj",
+        ],
+        "gate_up_proj": ["up_proj", "down_proj"],
+    }
+
+    # LoRA specific attributes
+    embedding_modules = {
+        "embed_tokens": "input_embeddings",
+        "lm_head": "output_embeddings",
+    }
+
+    @classmethod
+    def get_mamba_state_dtype_from_config(
+        cls,
+        vllm_config: "VllmConfig",
+    ) -> tuple[torch.dtype, torch.dtype]:
+        return MambaStateDtypeCalculator.mamba2_state_dtype(
+            vllm_config.model_config.dtype,
+            vllm_config.cache_config.mamba_cache_dtype,
+            vllm_config.cache_config.mamba_ssm_cache_dtype,
+        )
+
+    @classmethod
+    def get_mamba_state_shape_from_config(
+        cls,
+        vllm_config: "VllmConfig",
+    ) -> tuple[tuple[int, int], tuple[int, int, int]]:
+        """Calculate shapes for Mamba's convolutional and state caches.
+
+        Args:
+            vllm_config: vLLM config
+
+        Returns:
+            Tuple containing:
+            - conv_state_shape: Shape for convolutional state cache
+            - temporal_state_shape: Shape for state space model cache
+        """
+        parallel_config = vllm_config.parallel_config
+        hf_config = vllm_config.model_config.hf_config
+        intermediate_size = hf_config.mamba_expand * hf_config.hidden_size
+
+        return MambaStateShapeCalculator.mamba2_state_shape(
+            intermediate_size=intermediate_size,
+            tp_world_size=parallel_config.tensor_parallel_size,
+            n_groups=hf_config.mamba_n_groups,
+            num_heads=hf_config.mamba_n_heads,
+            head_dim=hf_config.mamba_d_head,
+            state_size=hf_config.mamba_d_state,
+            conv_kernel=hf_config.mamba_d_conv,
+        )
+
+    def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
+        config = vllm_config.model_config.hf_config
+        self.vllm_config = vllm_config
+        self.model_config = vllm_config.model_config
+
+        scheduler_config = vllm_config.scheduler_config
+        self.quant_config = vllm_config.quant_config
+
+        super().__init__()
+        self.config = config
+        self.scheduler_config = scheduler_config
+        self.model = BambaModel(
+            vllm_config=vllm_config, prefix=maybe_prefix(prefix, "model")
+        )
+
+        self.lm_head = ParallelLMHead(
+            config.vocab_size,
+            config.hidden_size,
+            prefix=maybe_prefix(prefix, "lm_head"),
+        )
+
+        self.logits_processor = LogitsProcessor(config.vocab_size)
+
+        self.make_empty_intermediate_tensors = (
+            self.model.make_empty_intermediate_tensors
+        )
+
+    def embed_input_ids(self, input_ids: torch.Tensor) -> torch.Tensor:
+        return self.model.embed_input_ids(input_ids)
+
+    def forward(
+        self,
+        input_ids: torch.Tensor,
+        positions: torch.Tensor,
+        intermediate_tensors: IntermediateTensors | None = None,
+        inputs_embeds: torch.Tensor | None = None,
+        **kwargs,
+    ):
+        hidden_states = self.model(
+            input_ids, positions, intermediate_tensors, inputs_embeds
+        )
+
+        return hidden_states
+
+    def compute_logits(
+        self,
+        hidden_states: torch.Tensor,
+    ) -> torch.Tensor | None:
+        logits = self.logits_processor(self.lm_head, hidden_states)
+        return logits
+
+    def load_weights(self, weights: Iterable[tuple[str, torch.Tensor]]) -> set[str]:
+        loader = AutoWeightsLoader(self)
+        return loader.load_weights(weights)