885 lines
30 KiB
Python
885 lines
30 KiB
Python
# Adapted from
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# https://github.com/huggingface/transformers/blob/v4.28.0/src/transformers/models/llama/modeling_llama.py
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# Copyright 2023 The SGLang team.
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# Copyright 2022 EleutherAI and the HuggingFace Inc. team. All rights reserved.
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#
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# This code is based on EleutherAI's GPT-NeoX library and the GPT-NeoX
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# and OPT implementations in this library. It has been modified from its
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# original forms to accommodate minor architectural differences compared
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# to GPT-NeoX and OPT used by the Meta AI team that trained the model.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Inference-only MiniCPM-V model compatible with HuggingFace weights."""
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from functools import partial
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from typing import (
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Any,
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Callable,
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Iterable,
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List,
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Literal,
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Optional,
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Tuple,
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TypedDict,
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Union,
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)
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import numpy as np
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import torch
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import torch.types
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from PIL import Image
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from torch import nn
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from torch.nn.init import trunc_normal_
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from transformers import PretrainedConfig
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from sglang.srt.layers.linear import ReplicatedLinear
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from sglang.srt.layers.logits_processor import LogitsProcessor
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from sglang.srt.layers.quantization.base_config import QuantizationConfig
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from sglang.srt.managers.mm_utils import (
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MultiModalityDataPaddingPatternTokenPairs,
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general_mm_embed_routine,
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)
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from sglang.srt.managers.schedule_batch import MultimodalDataItem, MultimodalInputs
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from sglang.srt.model_executor.forward_batch_info import ForwardBatch
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from sglang.srt.model_loader.utils import set_default_torch_dtype
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from sglang.srt.model_loader.weight_utils import default_weight_loader
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from sglang.srt.models.idefics2 import Idefics2VisionTransformer
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from sglang.srt.models.qwen2 import Qwen2Config, Qwen2ForCausalLM
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from sglang.srt.utils import add_prefix, flatten_nested_list
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RawImageType = Union[Image.Image, torch.Tensor]
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# sin/cos positional embedding helpers are adapted from:
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# https://github.com/facebookresearch/mae/blob/efb2a8062c206524e35e47d04501ed4f544c0ae8/util/pos_embed.py#L20
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def get_1d_sincos_pos_embed_from_grid(
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embed_dim: int, pos: np.ndarray, version: Tuple[int, int] = (2, 0)
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) -> torch.Tensor:
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"""
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embed_dim: output dimension for each position
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pos: a list of positions to be encoded: size (M,) / (H, W)
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out: (M, D) / (H, W, D)
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"""
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assert embed_dim % 2 == 0
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omega = np.arange(embed_dim // 2, dtype=np.float32)
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omega /= embed_dim / 2.0
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omega = 1.0 / 10000**omega # (D/2,)
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if version == (2, 0):
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pos = pos.reshape(-1) # (M,)
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out = np.einsum("m,d->md", pos, omega) # (M, D/2), outer product
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emb_sin = np.sin(out) # (M, D/2)
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emb_cos = np.cos(out) # (M, D/2)
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emb = np.concatenate([emb_sin, emb_cos], axis=1) # (M, D)
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else:
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out = np.einsum("hw,d->hwd", pos, omega) # (H, W, D/2), outer product
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emb_sin = np.sin(out) # (H, W, D/2)
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emb_cos = np.cos(out) # (H, W, D/2)
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emb = np.concatenate([emb_sin, emb_cos], axis=-1) # (H, W, D)
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return emb
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def get_2d_sincos_pos_embed_from_grid(
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embed_dim: int, grid: np.ndarray, version: Tuple[int, int] = (2, 0)
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) -> torch.Tensor:
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assert embed_dim % 2 == 0
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# use half of dimensions to encode grid_h
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emb_h = get_1d_sincos_pos_embed_from_grid(
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embed_dim // 2, grid[0], version
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) # (H*W, D/2) or (H, W, D/2)
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emb_w = get_1d_sincos_pos_embed_from_grid(
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embed_dim // 2, grid[1], version
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) # (H*W, D/2) or (H, W, D/2)
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if version == (2, 0):
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emb = np.concatenate([emb_h, emb_w], axis=1) # (H*W, D)
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else:
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emb = np.concatenate([emb_h, emb_w], axis=-1) # (H, W, D)
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return emb
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def get_2d_sincos_pos_embed(
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embed_dim: int,
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grid_size: Union[int, Tuple[int, int]],
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cls_token: bool = False,
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version: Tuple[int, int] = (2, 0),
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) -> torch.Tensor:
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"""
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grid_size: int of the grid height and width
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return:
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pos_embed: [grid_size*grid_size, embed_dim] or
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[1+grid_size*grid_size, embed_dim] (w/ or w/o cls_token)
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"""
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if isinstance(grid_size, int):
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grid_h_size, grid_w_size = grid_size, grid_size
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else:
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grid_h_size, grid_w_size = grid_size[0], grid_size[1]
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grid_h = np.arange(grid_h_size, dtype=np.float32)
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grid_w = np.arange(grid_w_size, dtype=np.float32)
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grid = np.meshgrid(grid_w, grid_h) # here w goes first
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grid = np.stack(grid, axis=0)
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assert isinstance(grid, np.ndarray) and grid.shape == (2, grid_h_size, grid_w_size)
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if version == (2, 0):
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grid = grid.reshape([2, 1, grid_h_size, grid_w_size])
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pos_embed = get_2d_sincos_pos_embed_from_grid(embed_dim, grid, version)
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if cls_token:
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pos_embed = np.concatenate([np.zeros([1, embed_dim]), pos_embed], axis=0)
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else:
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pos_embed = get_2d_sincos_pos_embed_from_grid(embed_dim, grid, version)
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return pos_embed
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class MiniCPMVImagePixelInputs(TypedDict):
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type: Literal["pixel_values"]
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data: List[torch.Tensor]
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"""
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Shape: `(batch_size * num_images, num_channels, height, width)`
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Note that the image size may vary, so we pass it as a list
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instead of a batched tensor.
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"""
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image_bounds: torch.Tensor
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"""
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Shape: `(batch_size * num_images, 2)`
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This should be in `(start, stop)` format.
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"""
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tgt_sizes: torch.Tensor
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"""
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Shape: `(batch_size * num_images, 2)`
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This should be in `(height, width)` format.
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"""
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class MiniCPMVImageEmbeddingInputs(TypedDict):
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type: Literal["image_embeds"]
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data: torch.Tensor
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"""
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Shape: `(batch_size * num_images, image_feature_size, hidden_size)`
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`hidden_size` must match the hidden size of language model backbone.
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instead of a batched tensor.
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"""
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image_bounds: torch.Tensor
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"""
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Shape: `(batch_size * num_images, 2)`
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This should be in `(start, stop)` format.
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"""
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MiniCPMVImageInputs = Union[MiniCPMVImagePixelInputs, MiniCPMVImageEmbeddingInputs]
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DEFAULT_LN = partial(nn.LayerNorm, eps=1e-6)
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class BaseResampler(nn.Module):
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"""
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A 2D perceiver-resampler network with one cross attention layers by
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(grid_size**2) learnable queries and 2d sincos pos_emb.
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Outputs:
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A tensor with the shape of (grid_size**2, embed_dim)
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"""
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def __init__(
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self,
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num_queries: int,
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embed_dim: int,
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num_heads: int,
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kv_dim: Optional[int] = None,
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norm_layer: Callable[[int], nn.LayerNorm] = DEFAULT_LN,
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do_post_projection: bool = True,
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quant_config: Optional[QuantizationConfig] = None,
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prefix: str = "",
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) -> None:
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super().__init__()
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self.num_queries = num_queries
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self.embed_dim = embed_dim
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self.num_heads = num_heads
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self.query = nn.Parameter(torch.zeros(self.num_queries, embed_dim))
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trunc_normal_(self.query, std=0.02)
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if kv_dim is not None and kv_dim != embed_dim:
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self.kv_proj = ReplicatedLinear(
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kv_dim,
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embed_dim,
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bias=False,
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quant_config=quant_config,
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prefix=add_prefix("kv_proj", prefix),
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)
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else:
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# Maintain the same return value with ReplicatedLinear.forward
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self.kv_proj = lambda *args, **kwargs: ( # type: ignore # noqa
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nn.Identity()(*args, **kwargs),
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None,
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)
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self.attn = nn.MultiheadAttention(embed_dim, num_heads)
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self.ln_q = norm_layer(embed_dim)
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self.ln_kv = norm_layer(embed_dim)
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self.do_post_projection = do_post_projection
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self.ln_post = norm_layer(embed_dim) if do_post_projection else None
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self.proj = (
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nn.Parameter((embed_dim**-0.5) * torch.randn(embed_dim, embed_dim))
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if do_post_projection
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else None
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)
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def _init_weights(self, m: nn.Module) -> None:
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if isinstance(m, nn.Linear):
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trunc_normal_(m.weight, std=0.02)
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if isinstance(m, nn.Linear) and m.bias is not None:
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nn.init.constant_(m.bias, 0)
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elif isinstance(m, nn.LayerNorm):
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nn.init.constant_(m.bias, 0)
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nn.init.constant_(m.weight, 1.0)
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def _repeat(self, query, N: int):
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return query.unsqueeze(1).repeat(1, N, 1)
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class Resampler2_5(BaseResampler):
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def __init__(
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self,
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num_queries: int,
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embed_dim: int,
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num_heads: int,
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kv_dim: Optional[int] = None,
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norm_layer: Callable[[int], nn.LayerNorm] = DEFAULT_LN,
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max_size: Tuple[int, int] = (70, 70),
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quant_config: Optional[QuantizationConfig] = None,
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prefix: str = "",
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) -> None:
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super().__init__(
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num_queries,
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embed_dim,
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num_heads,
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kv_dim,
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norm_layer,
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quant_config=quant_config,
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prefix=prefix,
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)
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self.max_size = max_size
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self._set_2d_pos_cache(self.max_size)
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self.apply(self._init_weights)
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def _set_2d_pos_cache(
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self, max_size: Tuple[int, int], device: torch.types.Device = "cpu"
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) -> None:
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pos_embed_arr = get_2d_sincos_pos_embed(
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self.embed_dim, max_size, version=(2, 5)
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)
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pos_embed = torch.from_numpy(pos_embed_arr).float().to(device)
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self.register_buffer("pos_embed", pos_embed, persistent=False)
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def _adjust_pos_cache(
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self, tgt_sizes: torch.Tensor, device: torch.types.Device
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) -> None:
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max_h = tgt_sizes[:, 0].max().item()
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max_w = tgt_sizes[:, 1].max().item()
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assert isinstance(max_h, int) and isinstance(max_w, int)
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if max_h > self.max_size[0] or max_w > self.max_size[1]:
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self.max_size = (
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max(max_h, self.max_size[0]),
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max(max_w, self.max_size[1]),
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)
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self._set_2d_pos_cache(self.max_size, device)
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def forward(self, x: torch.Tensor, tgt_sizes: torch.Tensor) -> torch.Tensor:
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assert x.shape[0] == tgt_sizes.shape[0]
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bs = x.shape[0]
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device = x.device
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dtype = x.dtype
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patch_len = tgt_sizes[:, 0] * tgt_sizes[:, 1]
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self._adjust_pos_cache(tgt_sizes, device=device)
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max_patch_len = patch_len.max().item()
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assert isinstance(max_patch_len, int)
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key_padding_mask = torch.zeros(
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(bs, max_patch_len), dtype=torch.bool, device=device
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)
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pos_embed = []
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for i in range(bs):
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tgt_h, tgt_w = tgt_sizes[i].tolist()
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pos_embed.append(
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self.pos_embed[:tgt_h, :tgt_w, :].reshape((tgt_h * tgt_w, -1)).to(dtype)
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) # patches * D
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key_padding_mask[i, patch_len[i] :] = True
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pos_embed = torch.nn.utils.rnn.pad_sequence(
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pos_embed, batch_first=True, padding_value=0.0
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).permute(
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1, 0, 2
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) # BLD => L * B * D
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x, _ = self.kv_proj(x) # B * L * D
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x = self.ln_kv(x).permute(1, 0, 2) # L * B * D
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q = self.ln_q(self.query) # Q * D
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out = self.attn(
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self._repeat(q, bs), # Q * B * D
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x + pos_embed, # L * B * D + L * B * D
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x,
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key_padding_mask=key_padding_mask,
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)[0]
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# out: Q * B * D
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x = out.permute(1, 0, 2) # B * Q * D
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x = self.ln_post(x)
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x = x @ self.proj
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return x
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def get_version_by_config(config: PretrainedConfig) -> Tuple[int, ...]:
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version_float = getattr(config, "version", None)
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# The old configs do not include version number
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# TODO: Remove this after the HF repos are updated
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if version_float is None:
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if config.hidden_size == 2304 and config.query_num == 64:
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return 2, 0
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return 2, 5
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version_str = str(version_float)
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return tuple(int(x) for x in version_str.split("."))
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class MiniCPMBaseModel(nn.Module):
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"""
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The abstract class of MiniCPMV can only be inherited, but cannot be
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instantiated.
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"""
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def __init__(
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self,
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*,
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config: PretrainedConfig,
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quant_config: Optional[QuantizationConfig] = None,
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prefix: str = "",
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):
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super().__init__()
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# All MiniCPM-V models disable `tie_word_embeddings` but
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# `PretrainedConfig.tie_word_embeddings` defaults to True; we cannot
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# check `tie_word_embeddings` until SGLang integrate MiniCPM-V model
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# and config class
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self.config = config
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self.version = get_version_by_config(self.config)
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self.llm = self.init_llm(
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config=config, quant_config=quant_config, prefix=add_prefix("llm", prefix)
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)
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self.vpm = self.init_vision_module(
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config, quant_config, add_prefix("vpm", prefix)
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)
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self.vision_dim = (
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self.vpm.embed_dim
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if self.version == (2, 0)
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else self.vpm.embeddings.embed_dim
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)
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self.embed_dim = self.config.hidden_size
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self.resampler = self.init_resampler(
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self.embed_dim,
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self.vision_dim,
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quant_config=quant_config,
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prefix=add_prefix("resampler", prefix),
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)
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self.logits_processor = LogitsProcessor(config)
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def _get_image_bounds(
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self,
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input_ids: torch.Tensor,
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pad_values: List[int],
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im_start_id: int,
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im_end_id: int,
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slice_start_id: Optional[int] = None,
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slice_end_id: Optional[int] = None,
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) -> torch.Tensor:
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"""
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Returns a tensor indicating the bounds (start and end token ids) of the images
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"""
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# All the images in the batch should share the same special image
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# bound token ids.
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start_cond = input_ids == im_start_id
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end_cond = input_ids == im_end_id
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if slice_start_id is not None:
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start_cond |= input_ids == slice_start_id
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end_cond |= input_ids == slice_end_id
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(image_start_tokens,) = torch.where(start_cond)
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image_start_tokens += 1
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(image_end_tokens,) = torch.where(end_cond)
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# the im_start_id sometimes can be cached as prefix, but it is needed for the embedding of the images
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if len(image_start_tokens) != len(image_end_tokens):
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if (
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len(image_start_tokens) + 1 == len(image_end_tokens)
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and input_ids[0] in pad_values
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and len(image_start_tokens) != 0
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and len(image_end_tokens) != 0
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and image_end_tokens[0] < image_start_tokens[0]
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):
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image_start_tokens = torch.cat(
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[
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torch.tensor([0], device=image_start_tokens.device),
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image_start_tokens,
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]
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)
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valid_image_nums = min(len(image_start_tokens), len(image_end_tokens))
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if valid_image_nums == 0:
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return torch.zeros((0, 2), device=input_ids.device)
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# Filter out pairs where start_token >= end_token
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valid_pairs = []
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for i in range(valid_image_nums):
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start_token = image_start_tokens[i]
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end_token = image_end_tokens[i]
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if start_token < end_token:
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valid_pairs.append((start_token, end_token))
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if not valid_pairs:
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return torch.zeros((0, 2), device=input_ids.device)
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# Convert valid pairs to tensor
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|
valid_pairs_tensor = torch.tensor(valid_pairs, device=input_ids.device)
|
|
return valid_pairs_tensor
|
|
|
|
def _parse_and_validate_inputs(
|
|
self,
|
|
input_ids: torch.Tensor,
|
|
**kwargs: object,
|
|
) -> Optional[MiniCPMVImageInputs]:
|
|
pixel_values = kwargs.pop("pixel_values", [])
|
|
tgt_sizes = kwargs.pop("tgt_sizes", [])
|
|
im_start_id = kwargs.pop("im_start_id", None)
|
|
im_end_id = kwargs.pop("im_end_id", None)
|
|
slice_start_id = kwargs.pop("slice_start_id", None)
|
|
slice_end_id = kwargs.pop("slice_end_id", None)
|
|
image_embeds = kwargs.pop("image_embeds", None)
|
|
pad_values = kwargs.pop("pad_values", None)
|
|
|
|
if image_embeds is not None:
|
|
image_bounds = self._get_image_bounds(
|
|
input_ids=input_ids,
|
|
pad_values=pad_values,
|
|
im_start_id=im_start_id,
|
|
im_end_id=im_end_id,
|
|
slice_start_id=slice_start_id,
|
|
slice_end_id=slice_end_id,
|
|
)
|
|
if not isinstance(image_embeds, (torch.Tensor, list)):
|
|
raise ValueError(
|
|
f"Incorrect type of image embeds. "
|
|
f"Got type: {type(image_embeds)}"
|
|
)
|
|
|
|
if isinstance(image_embeds, list):
|
|
image_embeds = torch.cat(image_embeds)
|
|
|
|
return MiniCPMVImageEmbeddingInputs(
|
|
image_bounds=image_bounds,
|
|
data=image_embeds,
|
|
type="image_embeds",
|
|
)
|
|
|
|
image_bounds = self._get_image_bounds(
|
|
input_ids=input_ids,
|
|
pad_values=pad_values,
|
|
im_start_id=im_start_id,
|
|
im_end_id=im_end_id,
|
|
slice_start_id=slice_start_id,
|
|
slice_end_id=slice_end_id,
|
|
)
|
|
return MiniCPMVImagePixelInputs(
|
|
image_bounds=image_bounds.to(device=input_ids.device),
|
|
data=pixel_values,
|
|
tgt_sizes=tgt_sizes,
|
|
type="pixel_values",
|
|
)
|
|
|
|
def get_embedding(
|
|
self,
|
|
input_ids: torch.Tensor,
|
|
image_inputs: Optional[MiniCPMVImageInputs],
|
|
) -> Tuple[torch.Tensor, torch.Tensor]:
|
|
vlm_embedding: torch.Tensor = self.llm.get_input_embeddings(input_ids)
|
|
|
|
if image_inputs is None: # No image
|
|
vision_hidden_states = torch.tensor([], device=input_ids.device)
|
|
else:
|
|
if image_inputs["type"] == "image_embeds":
|
|
vision_hidden_states = (
|
|
image_inputs["data"]
|
|
.type(vlm_embedding.dtype)
|
|
.to(vlm_embedding.device)
|
|
)
|
|
else:
|
|
vision_hidden_states = self.get_vision_hidden_states(image_inputs)
|
|
# See NOTE in _parse_and_validate_inputs
|
|
image_bounds = image_inputs["image_bounds"]
|
|
if len(image_bounds) > 0:
|
|
image_indices = torch.stack(
|
|
[
|
|
torch.arange(start, end, dtype=torch.long)
|
|
for start, end in image_bounds.tolist()
|
|
]
|
|
).to(vlm_embedding.device)
|
|
|
|
vlm_embedding.scatter_(
|
|
0,
|
|
image_indices.view(-1, 1).repeat(1, vlm_embedding.shape[-1]),
|
|
vision_hidden_states.view(-1, vision_hidden_states.shape[-1]),
|
|
)
|
|
|
|
return vlm_embedding, vision_hidden_states
|
|
|
|
def get_input_embeddings(self) -> nn.Embedding:
|
|
return self.llm.get_input_embeddings()
|
|
|
|
def forward(
|
|
self,
|
|
input_ids: torch.Tensor,
|
|
positions: torch.Tensor,
|
|
forward_batch: ForwardBatch,
|
|
**kwargs: Any,
|
|
) -> torch.Tensor:
|
|
hidden_states = general_mm_embed_routine(
|
|
input_ids=input_ids,
|
|
forward_batch=forward_batch,
|
|
image_data_embedding_func=self.get_image_feature,
|
|
language_model=self.llm,
|
|
positions=positions,
|
|
)
|
|
return hidden_states
|
|
|
|
def init_llm(
|
|
self,
|
|
config: Qwen2Config,
|
|
quant_config: Optional[QuantizationConfig] = None,
|
|
prefix: str = "",
|
|
) -> nn.Module:
|
|
raise NotImplementedError
|
|
|
|
def init_vision_module(
|
|
self,
|
|
config: PretrainedConfig,
|
|
quant_config: Optional[QuantizationConfig],
|
|
prefix: str = "",
|
|
) -> nn.Module:
|
|
raise NotImplementedError
|
|
|
|
def init_resampler(
|
|
self,
|
|
embed_dim: int,
|
|
vision_dim: int,
|
|
quant_config: Optional[QuantizationConfig] = None,
|
|
prefix: str = "",
|
|
) -> nn.Module:
|
|
raise NotImplementedError
|
|
|
|
def get_vision_embedding(
|
|
self,
|
|
pixel_values: List[torch.Tensor],
|
|
patch_attn_mask: Optional[torch.Tensor] = None,
|
|
tgt_sizes: Optional[torch.Tensor] = None,
|
|
) -> torch.Tensor:
|
|
raise NotImplementedError
|
|
|
|
def get_image_feature(self, items: List[MultimodalDataItem]) -> torch.Tensor:
|
|
raise NotImplementedError
|
|
|
|
|
|
class MiniCPMV2_6(MiniCPMBaseModel):
|
|
packed_modules_mapping = {
|
|
"qkv_proj": [
|
|
"q_proj",
|
|
"k_proj",
|
|
"v_proj",
|
|
],
|
|
"gate_up_proj": [
|
|
"gate_proj",
|
|
"up_proj",
|
|
],
|
|
}
|
|
# LoRA specific attributes
|
|
supported_lora_modules = [
|
|
# vision encoder
|
|
"fc1",
|
|
"fc2",
|
|
"out_proj",
|
|
# language model
|
|
"qkv_proj", # same name with vision encoder
|
|
"o_proj",
|
|
"gate_up_proj",
|
|
"down_proj",
|
|
# resampler
|
|
"kv_proj",
|
|
]
|
|
|
|
# BitandBytes specific attributes
|
|
bitsandbytes_stacked_params_mapping = {
|
|
# shard_name, weight_name, index
|
|
"q_proj": ("qkv_proj", 0),
|
|
"k_proj": ("qkv_proj", 1),
|
|
"v_proj": ("qkv_proj", 2),
|
|
"gate_proj": ("gate_up_proj", 0),
|
|
"up_proj": ("gate_up_proj", 1),
|
|
}
|
|
|
|
embedding_modules = {}
|
|
embedding_padding_modules = []
|
|
|
|
def __init__(
|
|
self,
|
|
config: PretrainedConfig,
|
|
quant_config: Optional[QuantizationConfig] = None,
|
|
prefix: str = "",
|
|
):
|
|
super().__init__(config=config, quant_config=quant_config, prefix=prefix)
|
|
assert self.version == (2, 6)
|
|
|
|
def init_llm(
|
|
self,
|
|
config: Qwen2Config,
|
|
quant_config: Optional[QuantizationConfig] = None,
|
|
prefix: str = "",
|
|
) -> nn.Module:
|
|
return Qwen2ForCausalLM(config=config, quant_config=quant_config, prefix=prefix)
|
|
|
|
def init_vision_module(
|
|
self,
|
|
config: PretrainedConfig,
|
|
quant_config: Optional[QuantizationConfig],
|
|
prefix: str = "",
|
|
) -> nn.Module:
|
|
model = Idefics2VisionTransformer(
|
|
config=config.vision_config, quant_config=quant_config, prefix=prefix
|
|
)
|
|
if self.config.drop_vision_last_layer:
|
|
model.encoder.layers = model.encoder.layers[:-1]
|
|
|
|
setattr(model, "embed_dim", model.embeddings.embed_dim)
|
|
setattr(model, "patch_size", model.embeddings.patch_size)
|
|
return model
|
|
|
|
def init_resampler(
|
|
self,
|
|
embed_dim: int,
|
|
vision_dim: int,
|
|
quant_config: Optional[QuantizationConfig] = None,
|
|
prefix: str = "",
|
|
) -> nn.Module:
|
|
with set_default_torch_dtype(torch.float16):
|
|
# The resampler in 2.6 remains consistent with the one in 2.5.
|
|
resampler = Resampler2_5(
|
|
num_queries=self.config.query_num,
|
|
embed_dim=embed_dim,
|
|
num_heads=embed_dim // 128,
|
|
kv_dim=vision_dim,
|
|
quant_config=quant_config,
|
|
prefix=prefix,
|
|
)
|
|
|
|
return resampler.to(device="cuda", dtype=torch.get_default_dtype())
|
|
|
|
def get_vision_embedding(
|
|
self,
|
|
pixel_values: List[torch.Tensor],
|
|
patch_attn_mask: Optional[torch.Tensor] = None,
|
|
tgt_sizes: Optional[torch.Tensor] = None,
|
|
) -> torch.Tensor:
|
|
vision_embedding = self.vpm(
|
|
pixel_values,
|
|
patch_attention_mask=patch_attn_mask,
|
|
tgt_sizes=tgt_sizes,
|
|
)
|
|
return vision_embedding
|
|
|
|
def get_image_feature(self, items: List[MultimodalDataItem]) -> torch.Tensor:
|
|
# list of tensors
|
|
pixel_values = flatten_nested_list([item.pixel_values for item in items])
|
|
tgt_sizes = torch.stack(
|
|
flatten_nested_list([item.tgt_size for item in items]), dim=0
|
|
)
|
|
assert len(pixel_values) == tgt_sizes.shape[0]
|
|
|
|
device = self.vpm.embeddings.position_embedding.weight.device
|
|
dtype = self.vpm.embeddings.position_embedding.weight.dtype
|
|
all_pixel_values_lst = [
|
|
i.flatten(end_dim=1).permute(1, 0) for i in pixel_values
|
|
]
|
|
|
|
max_patches = (tgt_sizes[:, 0] * tgt_sizes[:, 1]).max().item()
|
|
assert isinstance(max_patches, int)
|
|
all_pixel_values = torch.nn.utils.rnn.pad_sequence(
|
|
all_pixel_values_lst, batch_first=True, padding_value=0.0
|
|
)
|
|
|
|
B, L, _ = all_pixel_values.shape
|
|
all_pixel_values = all_pixel_values.permute(0, 2, 1).reshape(B, 3, -1, L)
|
|
patch_attn_mask = torch.zeros(
|
|
(B, 1, max_patches), dtype=torch.bool, device=device
|
|
)
|
|
|
|
tgt_sizes_tensor = tgt_sizes.clone().to(device=patch_attn_mask.device)
|
|
mask_shapes = tgt_sizes_tensor[:, 0] * tgt_sizes_tensor[:, 1]
|
|
patch_attn_mask[:, 0, :] = torch.arange(
|
|
patch_attn_mask.size(2), device=patch_attn_mask.device
|
|
).unsqueeze(0) < mask_shapes.unsqueeze(1)
|
|
|
|
vision_embedding = self.vpm(
|
|
all_pixel_values.type(dtype),
|
|
patch_attention_mask=patch_attn_mask,
|
|
tgt_sizes=tgt_sizes,
|
|
)
|
|
return self.resampler(vision_embedding, tgt_sizes)
|
|
|
|
def pad_input_ids(self, input_ids: List[int], image_inputs: MultimodalInputs):
|
|
# Get all special token IDs
|
|
im_start_id: int = image_inputs.im_start_id
|
|
im_end_id: int = image_inputs.im_end_id
|
|
slice_start_id: int = image_inputs.slice_start_id
|
|
slice_end_id: int = image_inputs.slice_end_id
|
|
|
|
media_token_pairs = [(im_start_id, im_end_id), (slice_start_id, slice_end_id)]
|
|
pattern = MultiModalityDataPaddingPatternTokenPairs(media_token_pairs)
|
|
|
|
return pattern.pad_input_tokens(input_ids, image_inputs)
|
|
|
|
|
|
_SUPPORT_VERSION = {(2, 6): MiniCPMV2_6}
|
|
|
|
|
|
class MiniCPMV:
|
|
"""
|
|
Different versions of MiniCPMV use different visual encoders and LLMs,
|
|
which is not conducive to the current integration logic of LoRA and
|
|
bitsandbytes in SGLang. Therefore, it is necessary to separate them.
|
|
"""
|
|
|
|
# Ensure that the LoRA support check passes when the class is not
|
|
# initialized, but set all these attributes to empty.
|
|
packed_modules_mapping = {}
|
|
supported_lora_modules = []
|
|
embedding_modules = {}
|
|
embedding_padding_modules = []
|
|
|
|
minicpmv: nn.Module
|
|
|
|
def __init__(
|
|
self,
|
|
config: PretrainedConfig,
|
|
quant_config: Optional[QuantizationConfig] = None,
|
|
prefix: str = "",
|
|
) -> None:
|
|
super().__init__()
|
|
|
|
if not hasattr(config, "version"):
|
|
version = (2, 6)
|
|
else:
|
|
version = str(config.version).split(".")
|
|
version = tuple([int(x) for x in version])
|
|
# Dispatch class based on version
|
|
instance_class = _SUPPORT_VERSION.get(version)
|
|
if instance_class is None:
|
|
raise ValueError("Currently, MiniCPMV only supports versions 2.6")
|
|
|
|
try:
|
|
minicpmv = instance_class(
|
|
config=config, quant_config=quant_config, prefix=prefix
|
|
)
|
|
self.minicpmv = minicpmv
|
|
except Exception as e:
|
|
print(f"Failed to instantiate MiniCPMV: {e}")
|
|
raise e
|
|
self.config = config
|
|
|
|
def __getattr__(self, name):
|
|
if name == "minicpmv":
|
|
return None
|
|
return getattr(self.minicpmv, name)
|
|
|
|
def __call__(self, *args, **kwargs):
|
|
return self.minicpmv(*args, **kwargs)
|
|
|
|
def load_weights(self, weights: Iterable[Tuple[str, torch.Tensor]]):
|
|
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.minicpmv.named_parameters())
|
|
for name, loaded_weight in weights:
|
|
if "rotary_emb.inv_freq~" in name or "projector" in name:
|
|
continue
|
|
if "rotary_emb.cos_cached" in name or "rotary_emb.sin_cached" in name:
|
|
# Models trained using ColossalAI may include these tensors in
|
|
# the checkpoint. Skip them.
|
|
continue
|
|
if name.startswith("model.vision_tower") and name not in params_dict:
|
|
continue
|
|
|
|
# adapt to VisionAttention
|
|
name = name.replace(r"self_attn.out_proj", r"self_attn.proj")
|
|
|
|
if "sampler" in name:
|
|
param = params_dict[name]
|
|
weight_loader = getattr(param, "weight_loader", default_weight_loader)
|
|
weight_loader(param, loaded_weight)
|
|
continue
|
|
|
|
for param_name, weight_name, shard_id in stacked_params_mapping:
|
|
# replace the name and load with customized loader
|
|
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
|
|
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
|
|
|
|
param = params_dict[name]
|
|
weight_loader = getattr(param, "weight_loader", default_weight_loader)
|
|
weight_loader(param, loaded_weight)
|
|
|
|
|
|
EntryClass = MiniCPMV
|