biondizzle/vllm
1
0
Fork 0
Code Issues Pull Requests Actions 2 Packages Projects Releases Wiki Activity

[V1] Remove V0 code paths for Hybrid models (#25400)

Browse Source 
Signed-off-by: Thomas Parnell <tpa@zurich.ibm.com>
This commit is contained in:
Thomas Parnell
2025-09-23 17:26:13 +02:00
committed by GitHub
parent 2c58742dff
commit a903669e10
31 changed files with 352 additions and 2296 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
vllm/model_executor/models/bamba.py
View File

@@ -9,21 +9,17 @@ import torch
from torch import nn
from transformers import BambaConfig
from vllm import envs
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.forward_context import get_forward_context
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.mamba2_metadata import (
Mamba2Metadata, prepare_mamba2_metadata)
from vllm.model_executor.layers.mamba.mamba_mixer2 import MambaMixer2
from vllm.model_executor.layers.mamba.mamba_utils import (
MambaStateDtypeCalculator, MambaStateShapeCalculator)
@@ -32,10 +28,7 @@ from vllm.model_executor.layers.rotary_embedding import get_rope
from vllm.model_executor.layers.vocab_parallel_embedding import (
DEFAULT_VOCAB_PADDING_SIZE, ParallelLMHead, VocabParallelEmbedding)
from vllm.model_executor.model_loader.weight_utils import default_weight_loader
from vllm.model_executor.models.mamba_cache import (MambaCacheManager,
MambaCacheParams)
from vllm.sequence import IntermediateTensors
from vllm.utils import LayerBlockType
from .interfaces import (HasInnerState, IsHybrid, SupportsLoRA, SupportsPP,
SupportsQuant)
@@ -115,8 +108,6 @@ class BambaMixerDecoderLayer(nn.Module):
self,
hidden_states: torch.Tensor,
residual: Optional[torch.Tensor],
mamba_cache_params: MambaCacheParams,
mamba2_metadata: Mamba2Metadata,
**kwargs,
):
if residual is None:
@@ -127,7 +118,7 @@ class BambaMixerDecoderLayer(nn.Module):
hidden_states, residual)
output = torch.empty_like(hidden_states)
self.mamba(hidden_states, output, mamba_cache_params, mamba2_metadata)
self.mamba(hidden_states, output)
# Fully Connected
hidden_states, residual = self.pre_ff_layernorm(output, residual)
hidden_states = self.feed_forward(hidden_states)
@@ -315,22 +306,10 @@ class BambaModel(nn.Module):
self,
input_ids: torch.Tensor,
positions: torch.Tensor,
mamba_cache_params: MambaCacheParams,
intermediate_tensors: Optional[IntermediateTensors] = None,
inputs_embeds: Optional[torch.Tensor] = None,
) -> torch.Tensor:
attn_metadata = get_forward_context().attn_metadata
if not envs.VLLM_USE_V1:
mamba2_metadata = prepare_mamba2_metadata(
chunk_size=self.config.mamba_chunk_size,
attn_metadata=attn_metadata,
)
else:
# v1 get mamba2_metadata from forward_context
mamba2_metadata = None
if get_pp_group().is_first_rank:
if inputs_embeds is not None:
hidden_states = inputs_embeds
@@ -343,23 +322,11 @@ class BambaModel(nn.Module):
residual = intermediate_tensors["residual"]
residual = None
num_attn = 0
for i, layer in enumerate(self.layers):
if isinstance(layer, BambaAttentionDecoderLayer):
num_attn += 1
layer_mamba_cache_params = None
if isinstance(layer,
BambaMixerDecoderLayer) and mamba_cache_params:
layer_mamba_cache_params = mamba_cache_params.at_layer_idx(
i - num_attn)
hidden_states, residual = layer(
positions=positions,
hidden_states=hidden_states,
residual=residual,
mamba_cache_params=layer_mamba_cache_params,
mamba2_metadata=mamba2_metadata,
)
if not get_pp_group().is_last_rank:
@@ -457,13 +424,11 @@ class BambaForCausalLM(nn.Module, HasInnerState, SupportsLoRA, SupportsPP,
def get_mamba_state_shape_from_config(
cls,
vllm_config: "VllmConfig",
use_v1: bool = True,
) -> tuple[tuple[int, int], tuple[int, int, int]]:
"""Calculate shapes for Mamba's convolutional and state caches.
Args:
vllm_config: vLLM config
use_v1: Get shapes for V1 (or V0)
Returns:
Tuple containing:
@@ -482,7 +447,6 @@ class BambaForCausalLM(nn.Module, HasInnerState, SupportsLoRA, SupportsPP,
head_dim=hf_config.mamba_d_head,
state_size=hf_config.mamba_d_state,
conv_kernel=hf_config.mamba_d_conv,
use_v1=use_v1,
)
def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
@@ -515,8 +479,6 @@ class BambaForCausalLM(nn.Module, HasInnerState, SupportsLoRA, SupportsPP,
if not lora_config else lora_config.lora_vocab_padding_size,
prefix=maybe_prefix(prefix, "lm_head"),
)
# Used to track and store by the Mamba cache between steps.
self.mamba_cache: Optional[MambaCacheManager] = None
self.logits_processor = LogitsProcessor(self.unpadded_vocab_size,
config.vocab_size)
@@ -534,39 +496,11 @@ class BambaForCausalLM(nn.Module, HasInnerState, SupportsLoRA, SupportsPP,
inputs_embeds: Optional[torch.Tensor] = None,
**kwargs):
mamba_cache_params = None
if not envs.VLLM_USE_V1:
if self.mamba_cache is None:
num_mamba_layers = \
self.model_config.get_num_layers_by_block_type(
self.vllm_config.parallel_config,
LayerBlockType.mamba
)
mamba_state_shape = \
self.get_mamba_state_shape_from_config(
self.vllm_config, use_v1=False)
mamba_state_dtype = \
self.get_mamba_state_dtype_from_config(
self.vllm_config)
self.mamba_cache = MambaCacheManager(self.vllm_config,
num_mamba_layers,
*mamba_state_shape,
*mamba_state_dtype)
mamba_cache_params = self.mamba_cache.current_run_tensors(**kwargs)
hidden_states = self.model(input_ids, positions, mamba_cache_params,
intermediate_tensors, inputs_embeds)
hidden_states = self.model(input_ids, positions, intermediate_tensors,
inputs_embeds)
return hidden_states
def copy_inputs_before_cuda_graphs(self, input_buffers, **kwargs):
return self.mamba_cache.copy_inputs_before_cuda_graphs(
input_buffers, **kwargs)
def get_seqlen_agnostic_capture_inputs(self, batch_size: int):
return self.mamba_cache.get_seqlen_agnostic_capture_inputs(batch_size)
def compute_logits(
self,
hidden_states: torch.Tensor,