95
vllm_ascend/patch/worker/patch_kimi_k25.py
Normal file
95
vllm_ascend/patch/worker/patch_kimi_k25.py
Normal file
@@ -0,0 +1,95 @@
|
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#
|
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# Copyright (c) 2026 Huawei Technologies Co., Ltd. All Rights Reserved.
|
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# This file is a part of the vllm-ascend project.
|
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#
|
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# 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.
|
||||
#
|
||||
|
||||
import torch
|
||||
import torch.nn as nn
|
||||
import torch.nn.functional as F
|
||||
from vllm.model_executor.models.kimi_k25_vit import (
|
||||
Learnable2DInterpPosEmbDivided_fixed,
|
||||
MoonViT3dPretrainedModel,
|
||||
get_rope_shape_decorate,
|
||||
)
|
||||
|
||||
from vllm_ascend.utils import AscendDeviceType, get_ascend_device_type
|
||||
|
||||
|
||||
@get_rope_shape_decorate
|
||||
def get_rope_shape(org, interpolation_mode, shape):
|
||||
return (
|
||||
F.interpolate(
|
||||
org.permute((2, 0, 1)).unsqueeze(0),
|
||||
size=shape,
|
||||
mode=interpolation_mode,
|
||||
)
|
||||
.squeeze(0)
|
||||
.permute((1, 2, 0))
|
||||
.flatten(end_dim=1)
|
||||
)
|
||||
|
||||
|
||||
class AscendLearnable2DInterpPosEmbDivided_fixed(nn.Module):
|
||||
def forward(self, x: torch.Tensor, grid_thws: torch.Tensor | list) -> torch.Tensor:
|
||||
pos_embs = []
|
||||
if isinstance(grid_thws, torch.Tensor):
|
||||
grid_list = grid_thws.tolist()
|
||||
else:
|
||||
grid_list = grid_thws
|
||||
|
||||
for t, h, w in grid_list:
|
||||
assert t <= self.num_frames, (
|
||||
f"[vllm-ascend/patch_kimi_k25] Invalid frame count. t={t}, num_frames={self.num_frames}"
|
||||
)
|
||||
if (h, w) == self.weight.shape[:-1]:
|
||||
pos_emb_2d = self.weight.flatten(end_dim=1)
|
||||
else:
|
||||
pos_emb_2d = get_rope_shape(
|
||||
self.weight,
|
||||
interpolation_mode=self.interpolation_mode,
|
||||
shape=(h, w),
|
||||
)
|
||||
|
||||
if t == 1:
|
||||
pos_emb_3d = pos_emb_2d
|
||||
else:
|
||||
pos_emb_3d = pos_emb_2d.unsqueeze(0).repeat(t, 1, 1) + self.time_weight[0:t]
|
||||
|
||||
pos_embs.append(pos_emb_3d.reshape(-1, pos_emb_3d.shape[-1]))
|
||||
|
||||
out = x + torch.cat(pos_embs)
|
||||
return out
|
||||
|
||||
|
||||
Learnable2DInterpPosEmbDivided_fixed.forward = AscendLearnable2DInterpPosEmbDivided_fixed.forward
|
||||
|
||||
|
||||
# Patch MoonViT3dPretrainedModel.to() to ignore the `dtype` argument.
|
||||
# When KimiK25ForConditionalGeneration.__init__ calls:
|
||||
# self.vision_tower = self.vision_tower.to(device=..., dtype=model_config.dtype)
|
||||
# the `dtype=model_config.dtype` (e.g. bf16) would overwrite the fp8 parameters
|
||||
# created by the Ascend quantization scheme, causing a dtype mismatch later
|
||||
# in weight_loader when the checkpoint's fp8 weights are loaded.
|
||||
if get_ascend_device_type() == AscendDeviceType.A5:
|
||||
_original_moonvit_to = MoonViT3dPretrainedModel.to
|
||||
|
||||
def _patched_moonvit_to(self, *args, **kwargs):
|
||||
# Filter out dtype from positional arguments and remove from kwargs
|
||||
# to prevent overriding quantized weight dtypes on A5.
|
||||
new_args = tuple(a for a in args if not isinstance(a, torch.dtype))
|
||||
kwargs.pop("dtype", None)
|
||||
return _original_moonvit_to(self, *new_args, **kwargs)
|
||||
|
||||
MoonViT3dPretrainedModel.to = _patched_moonvit_to
|
||||
Reference in New Issue
Block a user