[Graph][Fusion]Add new pattern for AddRmsnormQuant with SP. (#5077)

### What this PR does / why we need it?
1. In addition to
[#4168](https://github.com/vllm-project/vllm-ascend/pull/4168),
[#5011](https://github.com/vllm-project/vllm-ascend/pull/5011), this PR
adds two more pattern for AddRmsnormQuant with SP enabled. The key
difference is to insert an additional `maybe_all_gather_and_maybe_unpad`
between `addrmsnorm` and `quantize`.
2. This PR also introduce another api `torch.ops.vllm.quantize`, so that
we pass `input_scale` and `input_scale_reciprocal` at the same time.
This is because `npu_add_rms_norm_quant` and `npu_quantize` requires
different `div_mode`. To avoid introducing additional reciprocal
calculation in runtime, we have to pass both of them to quantize api.
3. Removes redundant `AscendQuantRmsnorm`.


- vLLM version: v0.12.0
- vLLM main:
ad32e3e19c

---------

Signed-off-by: Angazenn <supperccell@163.com>
This commit is contained in:
Angazenn
2025-12-18 20:25:44 +08:00
committed by GitHub
parent a74a1196c5
commit acc3578f58
7 changed files with 454 additions and 116 deletions

View File

@@ -15,7 +15,7 @@
# This file is a part of the vllm-ascend project.
#
from typing import Optional, Tuple, Union, cast
from typing import Optional, Tuple, Union
import torch
from vllm.config import get_current_vllm_config
@@ -70,31 +70,6 @@ class AscendRMSNorm(RMSNorm):
return x
class AscendQuantRMSNorm(AscendRMSNorm):
def __init__(
self,
hidden_size: int,
eps: float = 1e-6,
var_hidden_size: Optional[int] = None,
has_weight: bool = True,
dtype: Optional[torch.dtype] = None,
) -> None:
super().__init__(hidden_size, eps, var_hidden_size, has_weight, dtype)
self.bias = torch.nn.Parameter(torch.zeros(hidden_size),
requires_grad=False)
def forward_oot(
self,
x: torch.Tensor,
residual: Optional[torch.Tensor] = None,
) -> Union[torch.Tensor, Tuple[torch.Tensor, torch.Tensor]]:
if residual is not None:
x, residual = super().forward_oot(x, residual)
return x.add_(self.bias), residual
return cast(torch.Tensor, super().forward_oot(x)).add_(self.bias)
class AscendGemmaRMSNorm(GemmaRMSNorm):
def forward_oot(