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[V1] [Hybrid] Support using float32 for state in Hybrid Models (Mamba2, Mamba1, Minimax) (#22928)

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Signed-off-by: Daniel Afrimi <danielafrimi8@gmail.com>
Signed-off-by: Thomas Parnell <tpa@zurich.ibm.com>
Signed-off-by: Chen Zhang <zhangch99@outlook.com>
Co-authored-by: Daniel Afrimi <danielafrimi8@gmail.com>
Co-authored-by: Burkhard Ringlein <ngl@zurich.ibm.com>
Co-authored-by: Chen Zhang <zhangch99@outlook.com>
This commit is contained in:
Thomas Parnell
2025-08-15 14:57:06 +02:00
committed by GitHub
parent 22341b996e
commit 75531a6c13
23 changed files with 467 additions and 87 deletions
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27
vllm/model_executor/models/mamba.py
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@@ -9,13 +9,13 @@ from torch import nn
from transformers import MambaConfig
from vllm import envs
from vllm.config import CacheConfig, VllmConfig
from vllm.config import CacheConfig, ModelConfig, VllmConfig
from vllm.distributed.parallel_state import get_pp_group
from vllm.model_executor.layers.layernorm import RMSNorm
from vllm.model_executor.layers.logits_processor import LogitsProcessor
from vllm.model_executor.layers.mamba.mamba_mixer import MambaMixer
from vllm.model_executor.layers.mamba.mamba_utils import (
MambaStateShapeCalculator)
MambaStateDtypeCalculator, MambaStateShapeCalculator)
from vllm.model_executor.layers.quantization.base_config import (
QuantizationConfig)
from vllm.model_executor.layers.vocab_parallel_embedding import (
@@ -40,6 +40,7 @@ class MambaDecoderLayer(nn.Module):
def __init__(self,
config: MambaConfig,
model_config: Optional[ModelConfig] = None,
cache_config: Optional[CacheConfig] = None,
quant_config: Optional[QuantizationConfig] = None,
is_lora_enabled: Optional[bool] = False,
@@ -61,6 +62,8 @@ class MambaDecoderLayer(nn.Module):
rms_norm_eps=mixer_rms_eps,
activation=config.hidden_act,
is_lora_enabled=self.is_lora_enabled,
model_config=model_config,
cache_config=cache_config,
prefix=f"{prefix}.mixer")
self.norm = RMSNorm(config.hidden_size, eps=config.layer_norm_epsilon)
@@ -88,6 +91,7 @@ class MambaModel(nn.Module):
super().__init__()
config = vllm_config.model_config.hf_config
model_config = vllm_config.model_config
cache_config = vllm_config.cache_config
quant_config = vllm_config.quant_config
lora_config = vllm_config.lora_config
@@ -108,6 +112,7 @@ class MambaModel(nn.Module):
self.start_layer, self.end_layer, self.layers = make_layers(
config.num_hidden_layers,
lambda prefix: MambaDecoderLayer(config,
model_config=model_config,
cache_config=cache_config,
quant_config=quant_config,
is_lora_enabled=is_lora_enabled,
@@ -243,9 +248,11 @@ class MambaForCausalLM(nn.Module, HasInnerState, IsAttentionFree, SupportsPP):
self.vllm_config.parallel_config, LayerBlockType.mamba)
state_shape = self.get_mamba_state_shape_from_config(
self.vllm_config)
state_dtype = self.get_mamba_state_dtype_from_config(
self.vllm_config)
self.mamba_cache = MambaCacheManager(self.vllm_config,
self.lm_head.weight.dtype,
num_layers, *state_shape)
num_layers, *state_shape,
*state_dtype)
mamba_cache_params = self.mamba_cache.current_run_tensors(**kwargs)
@@ -254,6 +261,18 @@ class MambaForCausalLM(nn.Module, HasInnerState, IsAttentionFree, SupportsPP):
return hidden_states
@classmethod
def get_mamba_state_dtype_from_config(
cls,
vllm_config: "VllmConfig",
) -> tuple[torch.dtype, torch.dtype]:
return MambaStateDtypeCalculator.mamba1_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,