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+ "device": "cuda:0",
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+ "dtype": "float16",
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+ },
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+ "load_note": "Use MindPipe to rebuild the compression structure before loading the HF state dict."
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+ }
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1
+ {
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+ "architectures": [
3
+ "MiniCPMV"
4
+ ],
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+ "attention_bias": false,
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+ "attention_dropout": 0.0,
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+ "auto_map": {
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+ "AutoConfig": "configuration_minicpm.MiniCPMVConfig",
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+ "AutoModel": "modeling_minicpmv.MiniCPMV",
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+ "AutoModelForCausalLM": "modeling_minicpmv.MiniCPMV"
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+ },
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+ "bos_token_id": 1,
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+ "dim_model_base": 256,
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+ "drop_vision_last_layer": true,
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+ "dtype": "float16",
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+ "eos_token_id": 2,
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+ "hidden_act": "silu",
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+ "hidden_size": 2304,
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+ "image_size": 448,
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+ "initializer_range": 0.1,
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+ "intermediate_size": 5760,
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+ "max_position_embeddings": 4096,
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+ "model_type": "minicpmv",
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+ "num_attention_heads": 36,
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+ "num_hidden_layers": 40,
26
+ "num_key_value_heads": 36,
27
+ "pad_token_id": null,
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+ "pretraining_tp": 1,
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+ "query_num": 64,
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+ "rms_norm_eps": 1e-05,
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+ "rope_parameters": null,
32
+ "rope_theta": 10000.0,
33
+ "scale_depth": 1.4,
34
+ "scale_emb": 12,
35
+ "tie_word_embeddings": false,
36
+ "transformers_version": "5.5.2",
37
+ "use_cache": false,
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+ "vision_encoder": "vit_so400m_patch14_siglip_384.webli",
39
+ "vocab_size": 122753
40
+ }
configuration_minicpm.py ADDED
@@ -0,0 +1,216 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # coding=utf-8
2
+ # Copyright 2022 EleutherAI and the HuggingFace Inc. team. All rights reserved.
3
+ #
4
+ # This code is based on EleutherAI's GPT-NeoX library and the GPT-NeoX
5
+ # and OPT implementations in this library. It has been modified from its
6
+ # original forms to accommodate minor architectural differences compared
7
+ # to GPT-NeoX and OPT used by the Meta AI team that trained the model.
8
+ #
9
+ # Licensed under the Apache License, Version 2.0 (the "License");
10
+ # you may not use this file except in compliance with the License.
11
+ # You may obtain a copy of the License at
12
+ #
13
+ # http://www.apache.org/licenses/LICENSE-2.0
14
+ #
15
+ # Unless required by applicable law or agreed to in writing, software
16
+ # distributed under the License is distributed on an "AS IS" BASIS,
17
+ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18
+ # See the License for the specific language governing permissions and
19
+ # limitations under the License.
20
+ """ MiniCPM model configuration"""
21
+
22
+ from transformers.configuration_utils import PretrainedConfig
23
+ from transformers.utils import logging
24
+
25
+
26
+ logger = logging.get_logger(__name__)
27
+
28
+ MINICPM_PRETRAINED_CONFIG_ARCHIVE_MAP = {}
29
+
30
+
31
+ class MiniCPMConfig(PretrainedConfig):
32
+ r"""
33
+ This is the configuration class to store the configuration of a [`MiniCPMModel`]. It is used to instantiate an MiniCPM
34
+ model according to the specified arguments, defining the model architecture. Instantiating a configuration with the
35
+ defaults will yield a similar configuration to that of the MiniCPM-7B.
36
+
37
+ Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
38
+ documentation from [`PretrainedConfig`] for more information.
39
+
40
+
41
+ Args:
42
+ vocab_size (`int`, *optional*, defaults to 32000):
43
+ Vocabulary size of the MiniCPM model. Defines the number of different tokens that can be represented by the
44
+ `inputs_ids` passed when calling [`MiniCPMModel`]
45
+ hidden_size (`int`, *optional*, defaults to 4096):
46
+ Dimension of the hidden representations.
47
+ intermediate_size (`int`, *optional*, defaults to 11008):
48
+ Dimension of the MLP representations.
49
+ num_hidden_layers (`int`, *optional*, defaults to 32):
50
+ Number of hidden layers in the Transformer decoder.
51
+ num_attention_heads (`int`, *optional*, defaults to 32):
52
+ Number of attention heads for each attention layer in the Transformer decoder.
53
+ num_key_value_heads (`int`, *optional*):
54
+ This is the number of key_value heads that should be used to implement Grouped Query Attention. If
55
+ `num_key_value_heads=num_attention_heads`, the model will use Multi Head Attention (MHA), if
56
+ `num_key_value_heads=1 the model will use Multi Query Attention (MQA) otherwise GQA is used. When
57
+ converting a multi-head checkpoint to a GQA checkpoint, each group key and value head should be constructed
58
+ by meanpooling all the original heads within that group. For more details checkout [this
59
+ paper](https://arxiv.org/pdf/2305.13245.pdf). If it is not specified, will default to
60
+ `num_attention_heads`.
61
+ hidden_act (`str` or `function`, *optional*, defaults to `"silu"`):
62
+ The non-linear activation function (function or string) in the decoder.
63
+ max_position_embeddings (`int`, *optional*, defaults to 2048):
64
+ The maximum sequence length that this model might ever be used with. MiniCPM 1 supports up to 2048 tokens,
65
+ MiniCPM 2 up to 4096, CodeMiniCPM up to 16384.
66
+ initializer_range (`float`, *optional*, defaults to 0.02):
67
+ The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
68
+ rms_norm_eps (`float`, *optional*, defaults to 1e-06):
69
+ The epsilon used by the rms normalization layers.
70
+ use_cache (`bool`, *optional*, defaults to `True`):
71
+ Whether or not the model should return the last key/values attentions (not used by all models). Only
72
+ relevant if `config.is_decoder=True`.
73
+ pad_token_id (`int`, *optional*):
74
+ Padding token id.
75
+ bos_token_id (`int`, *optional*, defaults to 1):
76
+ Beginning of stream token id.
77
+ eos_token_id (`int`, *optional*, defaults to 2):
78
+ End of stream token id.
79
+ pretraining_tp (`int`, *optional*, defaults to 1):
80
+ Experimental feature. Tensor parallelism rank used during pretraining. Please refer to [this
81
+ document](https://huggingface.co/docs/transformers/parallelism) to understand more about it. This value is
82
+ necessary to ensure exact reproducibility of the pretraining results. Please refer to [this
83
+ issue](https://github.com/pytorch/pytorch/issues/76232).
84
+ tie_word_embeddings (`bool`, *optional*, defaults to `False`):
85
+ Whether to tie weight embeddings
86
+ rope_theta (`float`, *optional*, defaults to 10000.0):
87
+ The base period of the RoPE embeddings.
88
+ rope_scaling (`Dict`, *optional*):
89
+ Dictionary containing the scaling configuration for the RoPE embeddings. Currently supports two scaling
90
+ strategies: linear and dynamic. Their scaling factor must be a float greater than 1. The expected format is
91
+ `{"type": strategy name, "factor": scaling factor}`. When using this flag, don't update
92
+ `max_position_embeddings` to the expected new maximum. See the following thread for more information on how
93
+ these scaling strategies behave:
94
+ https://www.reddit.com/r/LocalMiniCPM/comments/14mrgpr/dynamically_scaled_rope_further_increases/. This is an
95
+ experimental feature, subject to breaking API changes in future versions.
96
+ attention_bias (`bool`, defaults to `False`, *optional*, defaults to `False`):
97
+ Whether to use a bias in the query, key, value and output projection layers during self-attention.
98
+ attention_dropout (`float`, *optional*, defaults to 0.0):
99
+ The dropout ratio for the attention probabilities.
100
+
101
+ ```python
102
+ >>> from transformers import MiniCPMModel, MiniCPMConfig
103
+
104
+ >>> # Initializing a MiniCPM minicpm-7b style configuration
105
+ >>> configuration = MiniCPMConfig()
106
+
107
+ >>> # Initializing a model from the minicpm-7b style configuration
108
+ >>> model = MiniCPMModel(configuration)
109
+
110
+ >>> # Accessing the model configuration
111
+ >>> configuration = model.config
112
+ ```"""
113
+
114
+ model_type = "minicpm"
115
+ keys_to_ignore_at_inference = ["past_key_values"]
116
+
117
+ def __init__(
118
+ self,
119
+ vocab_size=32000,
120
+ hidden_size=4096,
121
+ intermediate_size=11008,
122
+ num_hidden_layers=32,
123
+ num_attention_heads=32,
124
+ num_key_value_heads=None,
125
+ hidden_act="silu",
126
+ max_position_embeddings=2048,
127
+ initializer_range=0.02,
128
+ rms_norm_eps=1e-6,
129
+ use_cache=True,
130
+ pad_token_id=None,
131
+ bos_token_id=1,
132
+ eos_token_id=2,
133
+ pretraining_tp=1,
134
+ tie_word_embeddings=False,
135
+ rope_theta=10000.0,
136
+ rope_scaling=None,
137
+ attention_bias=False,
138
+ attention_dropout=0.0,
139
+ scale_emb=1,
140
+ dim_model_base=1,
141
+ scale_depth=1,
142
+ **kwargs,
143
+ ):
144
+ self.vocab_size = vocab_size
145
+ self.max_position_embeddings = max_position_embeddings
146
+ self.hidden_size = hidden_size
147
+ self.intermediate_size = intermediate_size
148
+ self.num_hidden_layers = num_hidden_layers
149
+ self.num_attention_heads = num_attention_heads
150
+
151
+ # for backward compatibility
152
+ if num_key_value_heads is None:
153
+ num_key_value_heads = num_attention_heads
154
+
155
+ self.num_key_value_heads = num_key_value_heads
156
+ self.hidden_act = hidden_act
157
+ self.initializer_range = initializer_range
158
+ self.rms_norm_eps = rms_norm_eps
159
+ self.pretraining_tp = pretraining_tp
160
+ self.use_cache = use_cache
161
+ self.rope_theta = rope_theta
162
+ self.rope_scaling = rope_scaling
163
+ self._rope_scaling_validation()
164
+ self.attention_bias = attention_bias
165
+ self.attention_dropout = attention_dropout
166
+ self.scale_emb = scale_emb
167
+ self.dim_model_base = dim_model_base
168
+ self.scale_depth = scale_depth
169
+
170
+ super().__init__(
171
+ pad_token_id=pad_token_id,
172
+ bos_token_id=bos_token_id,
173
+ eos_token_id=eos_token_id,
174
+ tie_word_embeddings=tie_word_embeddings,
175
+ **kwargs,
176
+ )
177
+
178
+ def _rope_scaling_validation(self):
179
+ """
180
+ Validate the `rope_scaling` configuration.
181
+ """
182
+ if self.rope_scaling is None:
183
+ return
184
+
185
+ if not isinstance(self.rope_scaling, dict) or len(self.rope_scaling) != 2:
186
+ raise ValueError(
187
+ "`rope_scaling` must be a dictionary with with two fields, `type` and `factor`, "
188
+ f"got {self.rope_scaling}"
189
+ )
190
+ rope_scaling_type = self.rope_scaling.get("type", None)
191
+ rope_scaling_factor = self.rope_scaling.get("factor", None)
192
+ if rope_scaling_type is None or rope_scaling_type not in ["linear", "dynamic"]:
193
+ raise ValueError(
194
+ f"`rope_scaling`'s type field must be one of ['linear', 'dynamic'], got {rope_scaling_type}"
195
+ )
196
+ if rope_scaling_factor is None or not isinstance(rope_scaling_factor, float) or rope_scaling_factor <= 1.0:
197
+ raise ValueError(f"`rope_scaling`'s factor field must be a float > 1, got {rope_scaling_factor}")
198
+
199
+
200
+
201
+ class MiniCPMVConfig(MiniCPMConfig):
202
+ model_type = "minicpmv"
203
+ keys_to_ignore_at_inference = ["past_key_values"]
204
+ def __init__(
205
+ self,
206
+ vision_encoder="vit_so400m_patch14_siglip_384.webli",
207
+ query_num=64,
208
+ image_size=448,
209
+ drop_vision_last_layer=True,
210
+ **kwargs
211
+ ):
212
+ self.vision_encoder = vision_encoder
213
+ self.query_num = query_num
214
+ self.image_size=image_size
215
+ self.drop_vision_last_layer = drop_vision_last_layer
216
+ super().__init__(**kwargs)
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+ size 587598007
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+ {
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+ "_from_model_config": true,
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+ "bos_token_id": 1,
4
+ "eos_token_id": 2,
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+ "transformers_version": "5.5.2"
6
+ }
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1
+ # coding=utf-8
2
+ # Copyright 2022 EleutherAI and the HuggingFace Inc. team. All rights reserved.
3
+ #
4
+ # This code is based on EleutherAI's GPT-NeoX library and the GPT-NeoX
5
+ # and OPT implementations in this library. It has been modified from its
6
+ # original forms to accommodate minor architectural differences compared
7
+ # to GPT-NeoX and OPT used by the Meta AI team that trained the model.
8
+ #
9
+ # Licensed under the Apache License, Version 2.0 (the "License");
10
+ # you may not use this file except in compliance with the License.
11
+ # You may obtain a copy of the License at
12
+ #
13
+ # http://www.apache.org/licenses/LICENSE-2.0
14
+ #
15
+ # Unless required by applicable law or agreed to in writing, software
16
+ # distributed under the License is distributed on an "AS IS" BASIS,
17
+ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18
+ # See the License for the specific language governing permissions and
19
+ # limitations under the License.
20
+ """ PyTorch MiniCPM model."""
21
+ import math
22
+ import warnings
23
+ from typing import List, Optional, Tuple, Union, Dict
24
+
25
+ import torch
26
+ import torch.nn.functional as F
27
+ import torch.utils.checkpoint
28
+ from torch import nn
29
+ from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss
30
+
31
+ from transformers.activations import ACT2FN
32
+ from transformers.cache_utils import Cache, DynamicCache
33
+ from transformers.modeling_attn_mask_utils import (
34
+ AttentionMaskConverter,
35
+ _prepare_4d_attention_mask,
36
+ _prepare_4d_causal_attention_mask,
37
+ _prepare_4d_causal_attention_mask_for_sdpa,
38
+ )
39
+ from transformers.modeling_outputs import BaseModelOutputWithPast, CausalLMOutputWithPast, SequenceClassifierOutputWithPast
40
+ from transformers.modeling_utils import PreTrainedModel
41
+ from transformers.pytorch_utils import ALL_LAYERNORM_LAYERS, is_torch_greater_or_equal_than_1_13
42
+ from transformers.utils import (
43
+ add_start_docstrings,
44
+ add_start_docstrings_to_model_forward,
45
+ is_flash_attn_2_available,
46
+ is_flash_attn_greater_or_equal_2_10,
47
+ logging,
48
+ replace_return_docstrings,
49
+ )
50
+ from transformers.utils.import_utils import is_torch_fx_available
51
+ from .configuration_minicpm import MiniCPMConfig
52
+ import re
53
+
54
+ try:
55
+ from flash_attn import flash_attn_func, flash_attn_varlen_func
56
+ from flash_attn.bert_padding import index_first_axis, pad_input, unpad_input # noqa
57
+ except:
58
+ pass
59
+
60
+
61
+ # This makes `_prepare_4d_causal_attention_mask` a leaf function in the FX graph.
62
+ # It means that the function will not be traced through and simply appear as a node in the graph.
63
+ if is_torch_fx_available():
64
+ if not is_torch_greater_or_equal_than_1_13:
65
+ import torch.fx
66
+
67
+ _prepare_4d_causal_attention_mask = torch.fx.wrap(_prepare_4d_causal_attention_mask)
68
+
69
+
70
+ logger = logging.get_logger(__name__)
71
+
72
+ _CONFIG_FOR_DOC = "MiniCPMConfig"
73
+
74
+
75
+ def _get_unpad_data(attention_mask):
76
+ seqlens_in_batch = attention_mask.sum(dim=-1, dtype=torch.int32)
77
+ indices = torch.nonzero(attention_mask.flatten(), as_tuple=False).flatten()
78
+ max_seqlen_in_batch = seqlens_in_batch.max().item()
79
+ cu_seqlens = F.pad(torch.cumsum(seqlens_in_batch, dim=0, dtype=torch.torch.int32), (1, 0))
80
+ return (
81
+ indices,
82
+ cu_seqlens,
83
+ max_seqlen_in_batch,
84
+ )
85
+
86
+
87
+ def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int] = None):
88
+ warnings.warn(
89
+ "Calling `transformers.models.minicpm.modeling_minicpm._prepare_4d_attention_mask` is deprecated and will be removed in v4.37. Use `transformers.modeling_attn_mask_utils._prepare_4d_attention_mask"
90
+ )
91
+ return _prepare_4d_attention_mask(mask=mask, dtype=dtype, tgt_len=tgt_len)
92
+
93
+
94
+ def _make_causal_mask(
95
+ input_ids_shape: torch.Size, dtype: torch.dtype, device: torch.device, past_key_values_length: int = 0
96
+ ):
97
+ warnings.warn(
98
+ "Calling `transformers.models.minicpm.modeling_minicpm._make_causal_mask` is deprecated and will be removed in v4.37. Use `transformers.models.minicpm.modeling_minicpm.AttentionMaskConverter._make_causal_mask"
99
+ )
100
+ return AttentionMaskConverter._make_causal_mask(
101
+ input_ids_shape=input_ids_shape, dtype=dtype, device=device, past_key_values_length=past_key_values_length
102
+ )
103
+
104
+ # @torch.jit.script # type: ignore
105
+ def rms_layernorm(hidden: torch.Tensor, weight: torch.Tensor, eps: float):
106
+ old_dtype = hidden.dtype
107
+ variance = hidden.to(torch.float32).pow(2).mean(dim=-1, keepdim=True)
108
+ hidden = (hidden * torch.rsqrt(variance + eps)).to(old_dtype)
109
+ return hidden * weight
110
+
111
+
112
+ class MiniCPMRMSNorm(nn.Module):
113
+ def __init__(self, hidden_size, eps=1e-6):
114
+ """
115
+ MiniCPMRMSNorm is equivalent to T5LayerNorm
116
+ """
117
+ super().__init__()
118
+ self.weight = nn.Parameter(torch.ones(hidden_size))
119
+ self.variance_epsilon = eps
120
+
121
+ def forward(self, hidden_states):
122
+ return rms_layernorm(hidden_states, self.weight, self.variance_epsilon)
123
+
124
+
125
+ ALL_LAYERNORM_LAYERS.append(MiniCPMRMSNorm)
126
+
127
+
128
+ class MiniCPMRotaryEmbedding(nn.Module):
129
+ def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None):
130
+ super().__init__()
131
+
132
+ self.dim = dim
133
+ self.max_position_embeddings = max_position_embeddings
134
+ self.base = base
135
+ inv_freq = 1.0 / (self.base ** (torch.arange(0, self.dim, 2).float().to(device) / self.dim))
136
+ self.register_buffer("inv_freq", inv_freq, persistent=False)
137
+
138
+ # Build here to make `torch.jit.trace` work.
139
+ self._set_cos_sin_cache(
140
+ # seq_len=max_position_embeddings, device=self.inv_freq.device, dtype=torch.get_default_dtype()
141
+ seq_len=max_position_embeddings, device=self.inv_freq.device, dtype=torch.float32
142
+ )
143
+
144
+ def _set_cos_sin_cache(self, seq_len, device, dtype):
145
+ self.max_seq_len_cached = seq_len
146
+ t = torch.arange(self.max_seq_len_cached, device=device, dtype=self.inv_freq.dtype)
147
+ freqs = torch.outer(t, self.inv_freq)
148
+ # Different from paper, but it uses a different permutation in order to obtain the same calculation
149
+ emb = torch.cat((freqs, freqs), dim=-1)
150
+
151
+ self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
152
+ self.register_buffer("sin_cached", emb.sin().to(dtype), persistent=False)
153
+
154
+ def forward(self, x, seq_len=None):
155
+ # x: [bs, num_attention_heads, seq_len, head_size]
156
+ if seq_len > self.max_seq_len_cached:
157
+ self._set_cos_sin_cache(seq_len=seq_len, device=x.device, dtype=x.dtype)
158
+
159
+ return (
160
+ self.cos_cached[:seq_len].to(dtype=x.dtype),
161
+ self.sin_cached[:seq_len].to(dtype=x.dtype),
162
+ )
163
+
164
+
165
+ class MiniCPMLinearScalingRotaryEmbedding(MiniCPMRotaryEmbedding):
166
+ """MiniCPMRotaryEmbedding extended with linear scaling. Credits to the Reddit user /u/kaiokendev"""
167
+
168
+ def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None, scaling_factor=1.0):
169
+ self.scaling_factor = scaling_factor
170
+ super().__init__(dim, max_position_embeddings, base, device)
171
+
172
+ def _set_cos_sin_cache(self, seq_len, device, dtype):
173
+ self.max_seq_len_cached = seq_len
174
+ t = torch.arange(self.max_seq_len_cached, device=device, dtype=self.inv_freq.dtype)
175
+ t = t / self.scaling_factor
176
+
177
+ freqs = torch.outer(t, self.inv_freq)
178
+ # Different from paper, but it uses a different permutation in order to obtain the same calculation
179
+ emb = torch.cat((freqs, freqs), dim=-1)
180
+ self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
181
+ self.register_buffer("sin_cached", emb.sin().to(dtype), persistent=False)
182
+
183
+
184
+ class MiniCPMDynamicNTKScalingRotaryEmbedding(MiniCPMRotaryEmbedding):
185
+ """MiniCPMRotaryEmbedding extended with Dynamic NTK scaling. Credits to the Reddit users /u/bloc97 and /u/emozilla"""
186
+
187
+ def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None, scaling_factor=1.0):
188
+ self.scaling_factor = scaling_factor
189
+ super().__init__(dim, max_position_embeddings, base, device)
190
+
191
+ def _set_cos_sin_cache(self, seq_len, device, dtype):
192
+ self.max_seq_len_cached = seq_len
193
+
194
+ if seq_len > self.max_position_embeddings:
195
+ base = self.base * (
196
+ (self.scaling_factor * seq_len / self.max_position_embeddings) - (self.scaling_factor - 1)
197
+ ) ** (self.dim / (self.dim - 2))
198
+ inv_freq = 1.0 / (base ** (torch.arange(0, self.dim, 2).float().to(device) / self.dim))
199
+ self.register_buffer("inv_freq", inv_freq, persistent=False)
200
+
201
+ t = torch.arange(self.max_seq_len_cached, device=device, dtype=self.inv_freq.dtype)
202
+
203
+ freqs = torch.outer(t, self.inv_freq)
204
+ # Different from paper, but it uses a different permutation in order to obtain the same calculation
205
+ emb = torch.cat((freqs, freqs), dim=-1)
206
+
207
+ self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
208
+ self.register_buffer("sin_cached", emb.sin().to(dtype), persistent=False)
209
+
210
+
211
+ def rotate_half(x):
212
+ """Rotates half the hidden dims of the input."""
213
+ x1 = x[..., : x.shape[-1] // 2]
214
+ x2 = x[..., x.shape[-1] // 2 :]
215
+ return torch.cat((-x2, x1), dim=-1)
216
+
217
+
218
+ def apply_rotary_pos_emb(q, k, cos, sin, position_ids, unsqueeze_dim=1):
219
+ """Applies Rotary Position Embedding to the query and key tensors.
220
+
221
+ Args:
222
+ q (`torch.Tensor`): The query tensor.
223
+ k (`torch.Tensor`): The key tensor.
224
+ cos (`torch.Tensor`): The cosine part of the rotary embedding.
225
+ sin (`torch.Tensor`): The sine part of the rotary embedding.
226
+ position_ids (`torch.Tensor`):
227
+ The position indices of the tokens corresponding to the query and key tensors. For example, this can be
228
+ used to pass offsetted position ids when working with a KV-cache.
229
+ unsqueeze_dim (`int`, *optional*, defaults to 1):
230
+ The 'unsqueeze_dim' argument specifies the dimension along which to unsqueeze cos[position_ids] and
231
+ sin[position_ids] so that they can be properly broadcasted to the dimensions of q and k. For example, note
232
+ that cos[position_ids] and sin[position_ids] have the shape [batch_size, seq_len, head_dim]. Then, if q and
233
+ k have the shape [batch_size, heads, seq_len, head_dim], then setting unsqueeze_dim=1 makes
234
+ cos[position_ids] and sin[position_ids] broadcastable to the shapes of q and k. Similarly, if q and k have
235
+ the shape [batch_size, seq_len, heads, head_dim], then set unsqueeze_dim=2.
236
+ Returns:
237
+ `tuple(torch.Tensor)` comprising of the query and key tensors rotated using the Rotary Position Embedding.
238
+ """
239
+ # cos = cos[position_ids].unsqueeze(unsqueeze_dim)
240
+ # sin = sin[position_ids].unsqueeze(unsqueeze_dim)
241
+ # q_embed = (q * cos) + (rotate_half(q) * sin)
242
+ # k_embed = (k * cos) + (rotate_half(k) * sin)
243
+ orig_dtype = k.dtype
244
+ cos = cos[position_ids].unsqueeze(unsqueeze_dim) # [bs, 1, seq_len, dim]
245
+ sin = sin[position_ids].unsqueeze(unsqueeze_dim) # [bs, 1, seq_len, dim]
246
+ q_fp32 = q.to(dtype=torch.float32, device=q.device)
247
+ k_fp32 = k.to(dtype=torch.float32, device=k.device)
248
+ q_embed = (q_fp32 * cos) + (rotate_half(q_fp32) * sin)
249
+ k_embed = (k_fp32 * cos) + (rotate_half(k_fp32) * sin)
250
+ return q_embed.to(dtype=orig_dtype), k_embed.to(dtype=orig_dtype)
251
+
252
+ class MiniCPMMLP(nn.Module):
253
+ def __init__(self, config):
254
+ super().__init__()
255
+ self.config = config
256
+ self.hidden_size = config.hidden_size
257
+ self.intermediate_size = config.intermediate_size
258
+ self.gate_proj = nn.Linear(self.hidden_size, self.intermediate_size, bias=False)
259
+ self.up_proj = nn.Linear(self.hidden_size, self.intermediate_size, bias=False)
260
+ self.down_proj = nn.Linear(self.intermediate_size, self.hidden_size, bias=False)
261
+ self.act_fn = ACT2FN[config.hidden_act]
262
+
263
+ def forward(self, x):
264
+ if self.config.pretraining_tp > 1:
265
+ slice = self.intermediate_size // self.config.pretraining_tp
266
+ gate_proj_slices = self.gate_proj.weight.split(slice, dim=0)
267
+ up_proj_slices = self.up_proj.weight.split(slice, dim=0)
268
+ down_proj_slices = self.down_proj.weight.split(slice, dim=1)
269
+
270
+ gate_proj = torch.cat(
271
+ [F.linear(x, gate_proj_slices[i]) for i in range(self.config.pretraining_tp)], dim=-1
272
+ )
273
+ up_proj = torch.cat([F.linear(x, up_proj_slices[i]) for i in range(self.config.pretraining_tp)], dim=-1)
274
+
275
+ intermediate_states = (self.act_fn(gate_proj) * up_proj).split(slice, dim=2)
276
+ down_proj = [
277
+ F.linear(intermediate_states[i], down_proj_slices[i]) for i in range(self.config.pretraining_tp)
278
+ ]
279
+ down_proj = sum(down_proj)
280
+ else:
281
+ down_proj = self.down_proj(self.act_fn(self.gate_proj(x)) * self.up_proj(x))
282
+
283
+ return down_proj
284
+
285
+
286
+ def repeat_kv(hidden_states: torch.Tensor, n_rep: int) -> torch.Tensor:
287
+ """
288
+ This is the equivalent of torch.repeat_interleave(x, dim=1, repeats=n_rep). The hidden states go from (batch,
289
+ num_key_value_heads, seqlen, head_dim) to (batch, num_attention_heads, seqlen, head_dim)
290
+ """
291
+ batch, num_key_value_heads, slen, head_dim = hidden_states.shape
292
+ if n_rep == 1:
293
+ return hidden_states
294
+ hidden_states = hidden_states[:, :, None, :, :].expand(batch, num_key_value_heads, n_rep, slen, head_dim)
295
+ return hidden_states.reshape(batch, num_key_value_heads * n_rep, slen, head_dim)
296
+
297
+
298
+
299
+ class MiniCPMAttention(nn.Module):
300
+ """Multi-headed attention from 'Attention Is All You Need' paper"""
301
+
302
+ def __init__(self, config: MiniCPMConfig, layer_idx: Optional[int] = None):
303
+ super().__init__()
304
+ self.config = config
305
+ self.layer_idx = layer_idx
306
+ if layer_idx is None:
307
+ logger.warning_once(
308
+ f"Instantiating {self.__class__.__name__} without passing `layer_idx` is not recommended and will "
309
+ "to errors during the forward call, if caching is used. Please make sure to provide a `layer_idx` "
310
+ "when creating this class."
311
+ )
312
+
313
+ self.attention_dropout = config.attention_dropout
314
+ self.hidden_size = config.hidden_size
315
+ self.num_heads = config.num_attention_heads
316
+ self.head_dim = self.hidden_size // self.num_heads
317
+ self.num_key_value_heads = config.num_key_value_heads
318
+ self.num_key_value_groups = self.num_heads // self.num_key_value_heads
319
+ self.max_position_embeddings = config.max_position_embeddings
320
+ self.rope_theta = config.rope_theta
321
+ self.is_causal = True
322
+
323
+ if (self.head_dim * self.num_heads) != self.hidden_size:
324
+ raise ValueError(
325
+ f"hidden_size must be divisible by num_heads (got `hidden_size`: {self.hidden_size}"
326
+ f" and `num_heads`: {self.num_heads})."
327
+ )
328
+
329
+ self.q_proj = nn.Linear(self.hidden_size, self.num_heads * self.head_dim, bias=config.attention_bias)
330
+ self.k_proj = nn.Linear(self.hidden_size, self.num_key_value_heads * self.head_dim, bias=config.attention_bias)
331
+ self.v_proj = nn.Linear(self.hidden_size, self.num_key_value_heads * self.head_dim, bias=config.attention_bias)
332
+ self.o_proj = nn.Linear(self.num_heads * self.head_dim, self.hidden_size, bias=config.attention_bias)
333
+ self._init_rope()
334
+
335
+ def _init_rope(self):
336
+ if self.config.rope_scaling is None:
337
+ self.rotary_emb = MiniCPMRotaryEmbedding(
338
+ self.head_dim,
339
+ max_position_embeddings=self.max_position_embeddings,
340
+ base=self.rope_theta,
341
+ )
342
+ else:
343
+ scaling_type = self.config.rope_scaling["type"]
344
+ scaling_factor = self.config.rope_scaling["factor"]
345
+ if scaling_type == "linear":
346
+ self.rotary_emb = MiniCPMLinearScalingRotaryEmbedding(
347
+ self.head_dim,
348
+ max_position_embeddings=self.max_position_embeddings,
349
+ scaling_factor=scaling_factor,
350
+ base=self.rope_theta,
351
+ )
352
+ elif scaling_type == "dynamic":
353
+ self.rotary_emb = MiniCPMDynamicNTKScalingRotaryEmbedding(
354
+ self.head_dim,
355
+ max_position_embeddings=self.max_position_embeddings,
356
+ scaling_factor=scaling_factor,
357
+ base=self.rope_theta,
358
+ )
359
+ else:
360
+ raise ValueError(f"Unknown RoPE scaling type {scaling_type}")
361
+
362
+ def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int):
363
+ return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous()
364
+
365
+ def forward(
366
+ self,
367
+ hidden_states: torch.Tensor,
368
+ attention_mask: Optional[torch.Tensor] = None,
369
+ position_ids: Optional[torch.LongTensor] = None,
370
+ past_key_value: Optional[Cache] = None,
371
+ output_attentions: bool = False,
372
+ use_cache: bool = False,
373
+ **kwargs,
374
+ ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
375
+ if "padding_mask" in kwargs:
376
+ warnings.warn(
377
+ "Passing `padding_mask` is deprecated and will be removed in v4.37. Please make sure use `attention_mask` instead.`"
378
+ )
379
+ bsz, q_len, _ = hidden_states.size()
380
+
381
+ if self.config.pretraining_tp > 1:
382
+ key_value_slicing = (self.num_key_value_heads * self.head_dim) // self.config.pretraining_tp
383
+ query_slices = self.q_proj.weight.split(
384
+ (self.num_heads * self.head_dim) // self.config.pretraining_tp, dim=0
385
+ )
386
+ key_slices = self.k_proj.weight.split(key_value_slicing, dim=0)
387
+ value_slices = self.v_proj.weight.split(key_value_slicing, dim=0)
388
+
389
+ query_states = [F.linear(hidden_states, query_slices[i]) for i in range(self.config.pretraining_tp)]
390
+ query_states = torch.cat(query_states, dim=-1)
391
+
392
+ key_states = [F.linear(hidden_states, key_slices[i]) for i in range(self.config.pretraining_tp)]
393
+ key_states = torch.cat(key_states, dim=-1)
394
+
395
+ value_states = [F.linear(hidden_states, value_slices[i]) for i in range(self.config.pretraining_tp)]
396
+ value_states = torch.cat(value_states, dim=-1)
397
+
398
+ else:
399
+ query_states = self.q_proj(hidden_states)
400
+ key_states = self.k_proj(hidden_states)
401
+ value_states = self.v_proj(hidden_states)
402
+
403
+ query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
404
+ key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
405
+ value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
406
+
407
+ kv_seq_len = key_states.shape[-2]
408
+ if past_key_value is not None:
409
+ if self.layer_idx is None:
410
+ raise ValueError(
411
+ f"The cache structure has changed since version v4.36. If you are using {self.__class__.__name__} "
412
+ "for auto-regressive decoding with k/v caching, please make sure to initialize the attention class "
413
+ "with a layer index."
414
+ )
415
+ kv_seq_len += past_key_value.get_usable_length(kv_seq_len, self.layer_idx)
416
+
417
+ cos, sin = self.rotary_emb(value_states.to(torch.float32), seq_len=kv_seq_len)
418
+
419
+ query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin, position_ids)
420
+
421
+ if past_key_value is not None:
422
+ cache_kwargs = {"sin": sin, "cos": cos} # Specific to RoPE models
423
+ key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
424
+
425
+ key_states = repeat_kv(key_states, self.num_key_value_groups)
426
+ value_states = repeat_kv(value_states, self.num_key_value_groups)
427
+
428
+ attn_weights = torch.matmul(query_states, key_states.transpose(2, 3)) / math.sqrt(self.head_dim)
429
+ if attn_weights.size() != (bsz, self.num_heads, q_len, kv_seq_len):
430
+ raise ValueError(
431
+ f"Attention weights should be of size {(bsz, self.num_heads, q_len, kv_seq_len)}, but is"
432
+ f" {attn_weights.size()}"
433
+ )
434
+
435
+ if attention_mask is not None:
436
+ if attention_mask.size() != (bsz, 1, q_len, kv_seq_len):
437
+ raise ValueError(
438
+ f"Attention mask should be of size {(bsz, 1, q_len, kv_seq_len)}, but is {attention_mask.size()}"
439
+ )
440
+ attn_weights = attn_weights + attention_mask
441
+
442
+ # upcast attention to fp32
443
+ attn_weights = nn.functional.softmax(attn_weights, dim=-1, dtype=torch.float32).to(query_states.dtype)
444
+ attn_weights = nn.functional.dropout(attn_weights, p=self.attention_dropout, training=self.training)
445
+ attn_output = torch.matmul(attn_weights, value_states)
446
+
447
+ if attn_output.size() != (bsz, self.num_heads, q_len, self.head_dim):
448
+ raise ValueError(
449
+ f"`attn_output` should be of size {(bsz, self.num_heads, q_len, self.head_dim)}, but is"
450
+ f" {attn_output.size()}"
451
+ )
452
+
453
+ attn_output = attn_output.transpose(1, 2).contiguous()
454
+
455
+ attn_output = attn_output.reshape(bsz, q_len, self.hidden_size)
456
+
457
+ if self.config.pretraining_tp > 1:
458
+ attn_output = attn_output.split(self.hidden_size // self.config.pretraining_tp, dim=2)
459
+ o_proj_slices = self.o_proj.weight.split(self.hidden_size // self.config.pretraining_tp, dim=1)
460
+ attn_output = sum([F.linear(attn_output[i], o_proj_slices[i]) for i in range(self.config.pretraining_tp)])
461
+ else:
462
+ attn_output = self.o_proj(attn_output)
463
+
464
+ if not output_attentions:
465
+ attn_weights = None
466
+
467
+ return attn_output, attn_weights, past_key_value
468
+
469
+
470
+ class MiniCPMFlashAttention2(MiniCPMAttention):
471
+ """
472
+ MiniCPM flash attention module. This module inherits from `MiniCPMAttention` as the weights of the module stays
473
+ untouched. The only required change would be on the forward pass where it needs to correctly call the public API of
474
+ flash attention and deal with padding tokens in case the input contains any of them.
475
+ """
476
+
477
+ def __init__(self, *args, **kwargs):
478
+ super().__init__(*args, **kwargs)
479
+
480
+ # TODO: Should be removed once Flash Attention for RoCm is bumped to 2.1.
481
+ # flash_attn<2.1 generates top-left aligned causal mask, while what is needed here is bottom-right alignement, that was made default for flash_attn>=2.1. This attribute is used to handle this difference. Reference: https://github.com/Dao-AILab/flash-attention/releases/tag/v2.1.0.
482
+ # Beware that with flash_attn<2.1, using q_seqlen != k_seqlen (except for the case q_seqlen == 1) produces a wrong mask (top-left).
483
+ self._flash_attn_uses_top_left_mask = not is_flash_attn_greater_or_equal_2_10()
484
+
485
+ def forward(
486
+ self,
487
+ hidden_states: torch.Tensor,
488
+ attention_mask: Optional[torch.LongTensor] = None,
489
+ position_ids: Optional[torch.LongTensor] = None,
490
+ past_key_value: Optional[Cache] = None,
491
+ output_attentions: bool = False,
492
+ use_cache: bool = False,
493
+ **kwargs,
494
+ ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
495
+ # MiniCPMFlashAttention2 attention does not support output_attentions
496
+ if "padding_mask" in kwargs:
497
+ warnings.warn(
498
+ "Passing `padding_mask` is deprecated and will be removed in v4.37. Please make sure use `attention_mask` instead.`"
499
+ )
500
+
501
+ # overwrite attention_mask with padding_mask
502
+ attention_mask = kwargs.pop("padding_mask")
503
+
504
+ output_attentions = False
505
+
506
+ bsz, q_len, _ = hidden_states.size()
507
+
508
+ query_states = self.q_proj(hidden_states)
509
+ key_states = self.k_proj(hidden_states)
510
+ value_states = self.v_proj(hidden_states)
511
+
512
+ # Flash attention requires the input to have the shape
513
+ # batch_size x seq_length x head_dim x hidden_dim
514
+ # therefore we just need to keep the original shape
515
+ query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
516
+ key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
517
+ value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
518
+
519
+ kv_seq_len = key_states.shape[-2]
520
+ if past_key_value is not None:
521
+ kv_seq_len += past_key_value.get_usable_length(kv_seq_len, self.layer_idx)
522
+ cos, sin = self.rotary_emb(value_states.to(torch.float32), seq_len=kv_seq_len)
523
+ query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin, position_ids)
524
+
525
+ if past_key_value is not None:
526
+ cache_kwargs = {"sin": sin, "cos": cos} # Specific to RoPE models
527
+ key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
528
+
529
+ # TODO: These transpose are quite inefficient but Flash Attention requires the layout [batch_size, sequence_length, num_heads, head_dim]. We would need to refactor the KV cache
530
+ # to be able to avoid many of these transpose/reshape/view.
531
+ query_states = query_states.transpose(1, 2)
532
+ key_states = key_states.transpose(1, 2)
533
+ value_states = value_states.transpose(1, 2)
534
+
535
+ dropout_rate = self.attention_dropout if self.training else 0.0
536
+
537
+ # In PEFT, usually we cast the layer norms in float32 for training stability reasons
538
+ # therefore the input hidden states gets silently casted in float32. Hence, we need
539
+ # cast them back in the correct dtype just to be sure everything works as expected.
540
+ # This might slowdown training & inference so it is recommended to not cast the LayerNorms
541
+ # in fp32. (MiniCPMRMSNorm handles it correctly)
542
+
543
+ input_dtype = query_states.dtype
544
+ if input_dtype == torch.float32:
545
+ # Handle the case where the model is quantized
546
+ if hasattr(self.config, "_pre_quantization_dtype"):
547
+ target_dtype = self.config._pre_quantization_dtype
548
+ else:
549
+ target_dtype = self.q_proj.weight.dtype
550
+
551
+ logger.warning_once(
552
+ f"The input hidden states seems to be silently casted in float32, this might be related to"
553
+ f" the fact you have upcasted embedding or layer norm layers in float32. We will cast back the input in"
554
+ f" {target_dtype}."
555
+ )
556
+
557
+ query_states = query_states.to(target_dtype)
558
+ key_states = key_states.to(target_dtype)
559
+ value_states = value_states.to(target_dtype)
560
+
561
+ attn_output = self._flash_attention_forward(
562
+ query_states, key_states, value_states, attention_mask, q_len, dropout=dropout_rate
563
+ )
564
+
565
+ attn_output = attn_output.reshape(bsz, q_len, self.hidden_size).contiguous()
566
+ attn_output = self.o_proj(attn_output)
567
+
568
+ if not output_attentions:
569
+ attn_weights = None
570
+
571
+ return attn_output, attn_weights, past_key_value
572
+
573
+ def _flash_attention_forward(
574
+ self, query_states, key_states, value_states, attention_mask, query_length, dropout=0.0, softmax_scale=None
575
+ ):
576
+ """
577
+ Calls the forward method of Flash Attention - if the input hidden states contain at least one padding token
578
+ first unpad the input, then computes the attention scores and pad the final attention scores.
579
+
580
+ Args:
581
+ query_states (`torch.Tensor`):
582
+ Input query states to be passed to Flash Attention API
583
+ key_states (`torch.Tensor`):
584
+ Input key states to be passed to Flash Attention API
585
+ value_states (`torch.Tensor`):
586
+ Input value states to be passed to Flash Attention API
587
+ attention_mask (`torch.Tensor`):
588
+ The padding mask - corresponds to a tensor of size `(batch_size, seq_len)` where 0 stands for the
589
+ position of padding tokens and 1 for the position of non-padding tokens.
590
+ dropout (`int`, *optional*):
591
+ Attention dropout
592
+ softmax_scale (`float`, *optional*):
593
+ The scaling of QK^T before applying softmax. Default to 1 / sqrt(head_dim)
594
+ """
595
+ if not self._flash_attn_uses_top_left_mask:
596
+ causal = self.is_causal
597
+ else:
598
+ # TODO: Remove the `query_length != 1` check once Flash Attention for RoCm is bumped to 2.1. For details, please see the comment in MiniCPMFlashAttention2 __init__.
599
+ causal = self.is_causal and query_length != 1
600
+ # Contains at least one padding token in the sequence
601
+ if attention_mask is not None:
602
+ batch_size = query_states.shape[0]
603
+ query_states, key_states, value_states, indices_q, cu_seq_lens, max_seq_lens = self._upad_input(
604
+ query_states, key_states, value_states, attention_mask, query_length
605
+ )
606
+
607
+ cu_seqlens_q, cu_seqlens_k = cu_seq_lens
608
+ max_seqlen_in_batch_q, max_seqlen_in_batch_k = max_seq_lens
609
+ attn_output_unpad = flash_attn_varlen_func(
610
+ query_states,
611
+ key_states,
612
+ value_states,
613
+ cu_seqlens_q=cu_seqlens_q,
614
+ cu_seqlens_k=cu_seqlens_k,
615
+ max_seqlen_q=max_seqlen_in_batch_q,
616
+ max_seqlen_k=max_seqlen_in_batch_k,
617
+ dropout_p=dropout,
618
+ softmax_scale=softmax_scale,
619
+ causal=causal,
620
+ )
621
+
622
+ attn_output = pad_input(attn_output_unpad, indices_q, batch_size, query_length)
623
+ else:
624
+ attn_output = flash_attn_func(
625
+ query_states, key_states, value_states, dropout, softmax_scale=softmax_scale, causal=causal
626
+ )
627
+
628
+ return attn_output
629
+
630
+ def _upad_input(self, query_layer, key_layer, value_layer, attention_mask, query_length):
631
+ indices_k, cu_seqlens_k, max_seqlen_in_batch_k = _get_unpad_data(attention_mask)
632
+ batch_size, kv_seq_len, num_key_value_heads, head_dim = key_layer.shape
633
+
634
+ key_layer = index_first_axis(
635
+ key_layer.reshape(batch_size * kv_seq_len, num_key_value_heads, head_dim), indices_k
636
+ )
637
+ value_layer = index_first_axis(
638
+ value_layer.reshape(batch_size * kv_seq_len, num_key_value_heads, head_dim), indices_k
639
+ )
640
+ if query_length == kv_seq_len:
641
+ query_layer = index_first_axis(
642
+ query_layer.reshape(batch_size * kv_seq_len, self.num_heads, head_dim), indices_k
643
+ )
644
+ cu_seqlens_q = cu_seqlens_k
645
+ max_seqlen_in_batch_q = max_seqlen_in_batch_k
646
+ indices_q = indices_k
647
+ elif query_length == 1:
648
+ max_seqlen_in_batch_q = 1
649
+ cu_seqlens_q = torch.arange(
650
+ batch_size + 1, dtype=torch.int32, device=query_layer.device
651
+ ) # There is a memcpy here, that is very bad.
652
+ indices_q = cu_seqlens_q[:-1]
653
+ query_layer = query_layer.squeeze(1)
654
+ else:
655
+ # The -q_len: slice assumes left padding.
656
+ attention_mask = attention_mask[:, -query_length:]
657
+ query_layer, indices_q, cu_seqlens_q, max_seqlen_in_batch_q = unpad_input(query_layer, attention_mask)
658
+
659
+ return (
660
+ query_layer,
661
+ key_layer,
662
+ value_layer,
663
+ indices_q,
664
+ (cu_seqlens_q, cu_seqlens_k),
665
+ (max_seqlen_in_batch_q, max_seqlen_in_batch_k),
666
+ )
667
+
668
+
669
+ class MiniCPMSdpaAttention(MiniCPMAttention):
670
+ """
671
+ MiniCPM attention module using torch.nn.functional.scaled_dot_product_attention. This module inherits from
672
+ `MiniCPMAttention` as the weights of the module stays untouched. The only changes are on the forward pass to adapt to
673
+ SDPA API.
674
+ """
675
+
676
+ # Adapted from MiniCPMAttention.forward
677
+ def forward(
678
+ self,
679
+ hidden_states: torch.Tensor,
680
+ attention_mask: Optional[torch.Tensor] = None,
681
+ position_ids: Optional[torch.LongTensor] = None,
682
+ past_key_value: Optional[Cache] = None,
683
+ output_attentions: bool = False,
684
+ use_cache: bool = False,
685
+ ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
686
+ if output_attentions:
687
+ # TODO: Improve this warning with e.g. `model.config.attn_implementation = "manual"` once this is implemented.
688
+ logger.warning_once(
689
+ "MiniCPMModel is using MiniCPMSdpaAttention, but `torch.nn.functional.scaled_dot_product_attention` does not support `output_attentions=True`. Falling back to the manual attention implementation, "
690
+ 'but specifying the manual implementation will be required from Transformers version v5.0.0 onwards. This warning can be removed using the argument `attn_implementation="eager"` when loading the model.'
691
+ )
692
+ return super().forward(
693
+ hidden_states=hidden_states,
694
+ attention_mask=attention_mask,
695
+ position_ids=position_ids,
696
+ past_key_value=past_key_value,
697
+ output_attentions=output_attentions,
698
+ use_cache=use_cache,
699
+ )
700
+
701
+ bsz, q_len, _ = hidden_states.size()
702
+
703
+ query_states = self.q_proj(hidden_states)
704
+ key_states = self.k_proj(hidden_states)
705
+ value_states = self.v_proj(hidden_states)
706
+
707
+ query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
708
+ key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
709
+ value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
710
+
711
+ kv_seq_len = key_states.shape[-2]
712
+ if past_key_value is not None:
713
+ kv_seq_len += past_key_value.get_usable_length(kv_seq_len, self.layer_idx)
714
+ cos, sin = self.rotary_emb(value_states, seq_len=kv_seq_len)
715
+
716
+ query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin, position_ids)
717
+
718
+ if past_key_value is not None:
719
+ cache_kwargs = {"sin": sin, "cos": cos} # Specific to RoPE models
720
+ key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
721
+
722
+ key_states = repeat_kv(key_states, self.num_key_value_groups)
723
+ value_states = repeat_kv(value_states, self.num_key_value_groups)
724
+
725
+ if attention_mask is not None:
726
+ if attention_mask.size() != (bsz, 1, q_len, kv_seq_len):
727
+ raise ValueError(
728
+ f"Attention mask should be of size {(bsz, 1, q_len, kv_seq_len)}, but is {attention_mask.size()}"
729
+ )
730
+
731
+ # SDPA with memory-efficient backend is currently (torch==2.1.2) bugged with non-contiguous inputs with custom attn_mask,
732
+ # Reference: https://github.com/pytorch/pytorch/issues/112577.
733
+ if query_states.device.type == "cuda" and attention_mask is not None:
734
+ query_states = query_states.contiguous()
735
+ key_states = key_states.contiguous()
736
+ value_states = value_states.contiguous()
737
+
738
+ attn_output = torch.nn.functional.scaled_dot_product_attention(
739
+ query_states,
740
+ key_states,
741
+ value_states,
742
+ attn_mask=attention_mask,
743
+ dropout_p=self.attention_dropout if self.training else 0.0,
744
+ # The q_len > 1 is necessary to match with AttentionMaskConverter.to_causal_4d that does not create a causal mask in case q_len == 1.
745
+ is_causal=self.is_causal and attention_mask is None and q_len > 1,
746
+ )
747
+
748
+ attn_output = attn_output.transpose(1, 2).contiguous()
749
+ attn_output = attn_output.reshape(bsz, q_len, self.hidden_size)
750
+
751
+ attn_output = self.o_proj(attn_output)
752
+
753
+ return attn_output, None, past_key_value
754
+
755
+
756
+ MINICPM_ATTENTION_CLASSES = {
757
+ "eager": MiniCPMAttention,
758
+ "flash_attention_2": MiniCPMFlashAttention2,
759
+ "sdpa": MiniCPMSdpaAttention,
760
+ }
761
+
762
+
763
+ class MiniCPMDecoderLayer(nn.Module):
764
+ def __init__(self, config: MiniCPMConfig, layer_idx: int):
765
+ super().__init__()
766
+ self.hidden_size = config.hidden_size
767
+ self.self_attn = MINICPM_ATTENTION_CLASSES[config._attn_implementation](config=config, layer_idx=layer_idx)
768
+
769
+ self.mlp = MiniCPMMLP(config)
770
+ self.input_layernorm = MiniCPMRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
771
+ self.post_attention_layernorm = MiniCPMRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
772
+
773
+ self.scale_depth = config.scale_depth
774
+ self.num_hidden_layers = config.num_hidden_layers
775
+
776
+ def forward(
777
+ self,
778
+ hidden_states: torch.Tensor,
779
+ attention_mask: Optional[torch.Tensor] = None,
780
+ position_ids: Optional[torch.LongTensor] = None,
781
+ past_key_value: Optional[Tuple[torch.Tensor]] = None,
782
+ output_attentions: Optional[bool] = False,
783
+ use_cache: Optional[bool] = False,
784
+ **kwargs,
785
+ ) -> Tuple[torch.FloatTensor, Optional[Tuple[torch.FloatTensor, torch.FloatTensor]]]:
786
+ """
787
+ Args:
788
+ hidden_states (`torch.FloatTensor`): input to the layer of shape `(batch, seq_len, embed_dim)`
789
+ attention_mask (`torch.FloatTensor`, *optional*):
790
+ attention mask of size `(batch_size, sequence_length)` if flash attention is used or `(batch_size, 1,
791
+ query_sequence_length, key_sequence_length)` if default attention is used.
792
+ output_attentions (`bool`, *optional*):
793
+ Whether or not to return the attentions tensors of all attention layers. See `attentions` under
794
+ returned tensors for more detail.
795
+ use_cache (`bool`, *optional*):
796
+ If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding
797
+ (see `past_key_values`).
798
+ past_key_value (`Tuple(torch.FloatTensor)`, *optional*): cached past key and value projection states
799
+ """
800
+ if "padding_mask" in kwargs:
801
+ warnings.warn(
802
+ "Passing `padding_mask` is deprecated and will be removed in v4.37. Please make sure use `attention_mask` instead.`"
803
+ )
804
+
805
+ residual = hidden_states
806
+ hidden_states = self.input_layernorm(hidden_states)
807
+ # Self Attention
808
+ hidden_states, self_attn_weights, present_key_value = self.self_attn(
809
+ hidden_states=hidden_states,
810
+ attention_mask=attention_mask,
811
+ position_ids=position_ids,
812
+ past_key_value=past_key_value,
813
+ output_attentions=output_attentions,
814
+ use_cache=use_cache,
815
+ **kwargs,
816
+ )
817
+
818
+ hidden_states = residual + hidden_states * (self.scale_depth / math.sqrt(self.num_hidden_layers))
819
+
820
+ # Fully Connected
821
+ residual = hidden_states
822
+ hidden_states = self.post_attention_layernorm(hidden_states)
823
+
824
+ hidden_states = self.mlp(hidden_states)
825
+ hidden_states = residual + hidden_states * (self.scale_depth / math.sqrt(self.num_hidden_layers))
826
+
827
+ outputs = (hidden_states,)
828
+
829
+ if output_attentions:
830
+ outputs += (self_attn_weights,)
831
+
832
+ if use_cache:
833
+ outputs += (present_key_value,)
834
+
835
+ return outputs
836
+
837
+
838
+ MINICPM_START_DOCSTRING = r"""
839
+ This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the
840
+ library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads
841
+ etc.)
842
+
843
+ This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass.
844
+ Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage
845
+ and behavior.
846
+
847
+ Parameters:
848
+ config ([`MiniCPMConfig`]):
849
+ Model configuration class with all the parameters of the model. Initializing with a config file does not
850
+ load the weights associated with the model, only the configuration. Check out the
851
+ [`~PreTrainedModel.from_pretrained`] method to load the model weights.
852
+ """
853
+
854
+
855
+ @add_start_docstrings(
856
+ "The bare MiniCPM Model outputting raw hidden-states without any specific head on top.",
857
+ MINICPM_START_DOCSTRING,
858
+ )
859
+ class MiniCPMPreTrainedModel(PreTrainedModel):
860
+ config_class = MiniCPMConfig
861
+ base_model_prefix = "model"
862
+ supports_gradient_checkpointing = True
863
+ _no_split_modules = ["MiniCPMDecoderLayer"]
864
+ _skip_keys_device_placement = "past_key_values"
865
+ _supports_flash_attn_2 = True
866
+ _supports_sdpa = True
867
+ _supports_cache_class = True
868
+
869
+ def _init_weights(self, module):
870
+ std = self.config.initializer_range
871
+ if isinstance(module, nn.Linear):
872
+ module.weight.data.normal_(mean=0.0, std=std)
873
+ if module.bias is not None:
874
+ module.bias.data.zero_()
875
+ elif isinstance(module, nn.Embedding):
876
+ module.weight.data.normal_(mean=0.0, std=std)
877
+ if module.padding_idx is not None:
878
+ module.weight.data[module.padding_idx].zero_()
879
+
880
+
881
+ MINICPM_INPUTS_DOCSTRING = r"""
882
+ Args:
883
+ input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`):
884
+ Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide
885
+ it.
886
+
887
+ Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
888
+ [`PreTrainedTokenizer.__call__`] for details.
889
+
890
+ [What are input IDs?](../glossary#input-ids)
891
+ attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
892
+ Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
893
+
894
+ - 1 for tokens that are **not masked**,
895
+ - 0 for tokens that are **masked**.
896
+
897
+ [What are attention masks?](../glossary#attention-mask)
898
+
899
+ Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
900
+ [`PreTrainedTokenizer.__call__`] for details.
901
+
902
+ If `past_key_values` is used, optionally only the last `input_ids` have to be input (see
903
+ `past_key_values`).
904
+
905
+ If you want to change padding behavior, you should read [`modeling_opt._prepare_decoder_attention_mask`]
906
+ and modify to your needs. See diagram 1 in [the paper](https://arxiv.org/abs/1910.13461) for more
907
+ information on the default strategy.
908
+
909
+ - 1 indicates the head is **not masked**,
910
+ - 0 indicates the head is **masked**.
911
+ position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
912
+ Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0,
913
+ config.n_positions - 1]`.
914
+
915
+ [What are position IDs?](../glossary#position-ids)
916
+ past_key_values (`Cache` or `tuple(tuple(torch.FloatTensor))`, *optional*):
917
+ Pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
918
+ blocks) that can be used to speed up sequential decoding. This typically consists in the `past_key_values`
919
+ returned by the model at a previous stage of decoding, when `use_cache=True` or `config.use_cache=True`.
920
+
921
+ Two formats are allowed:
922
+ - a [`~cache_utils.Cache`] instance;
923
+ - Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of
924
+ shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`). This is also known as the legacy
925
+ cache format.
926
+
927
+ The model will output the same cache format that is fed as input. If no `past_key_values` are passed, the
928
+ legacy cache format will be returned.
929
+
930
+ If `past_key_values` are used, the user can optionally input only the last `input_ids` (those that don't
931
+ have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `input_ids`
932
+ of shape `(batch_size, sequence_length)`.
933
+ inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
934
+ Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
935
+ is useful if you want more control over how to convert `input_ids` indices into associated vectors than the
936
+ model's internal embedding lookup matrix.
937
+ use_cache (`bool`, *optional*):
938
+ If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
939
+ `past_key_values`).
940
+ output_attentions (`bool`, *optional*):
941
+ Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
942
+ tensors for more detail.
943
+ output_hidden_states (`bool`, *optional*):
944
+ Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
945
+ more detail.
946
+ return_dict (`bool`, *optional*):
947
+ Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
948
+ """
949
+
950
+
951
+ @add_start_docstrings(
952
+ "The bare MiniCPM Model outputting raw hidden-states without any specific head on top.",
953
+ MINICPM_START_DOCSTRING,
954
+ )
955
+ class MiniCPMModel(MiniCPMPreTrainedModel):
956
+ """
957
+ Transformer decoder consisting of *config.num_hidden_layers* layers. Each layer is a [`MiniCPMDecoderLayer`]
958
+
959
+ Args:
960
+ config: MiniCPMConfig
961
+ """
962
+
963
+ def __init__(self, config: MiniCPMConfig):
964
+ super().__init__(config)
965
+ self.padding_idx = config.pad_token_id
966
+ self.vocab_size = config.vocab_size
967
+
968
+ self.embed_tokens = nn.Embedding(config.vocab_size, config.hidden_size, self.padding_idx)
969
+ self.layers = nn.ModuleList(
970
+ [MiniCPMDecoderLayer(config, layer_idx) for layer_idx in range(config.num_hidden_layers)]
971
+ )
972
+ self._use_sdpa = config._attn_implementation == "sdpa"
973
+ self._use_flash_attention_2 = config._attn_implementation == "flash_attention_2"
974
+
975
+ self.norm = MiniCPMRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
976
+
977
+ self.gradient_checkpointing = False
978
+ # Initialize weights and apply final processing
979
+ self.post_init()
980
+
981
+ def get_input_embeddings(self):
982
+ return self.embed_tokens
983
+
984
+ def set_input_embeddings(self, value):
985
+ self.embed_tokens = value
986
+
987
+ @add_start_docstrings_to_model_forward(MINICPM_INPUTS_DOCSTRING)
988
+ def forward(
989
+ self,
990
+ input_ids: torch.LongTensor = None,
991
+ attention_mask: Optional[torch.Tensor] = None,
992
+ position_ids: Optional[torch.LongTensor] = None,
993
+ past_key_values: Optional[List[torch.FloatTensor]] = None,
994
+ inputs_embeds: Optional[torch.FloatTensor] = None,
995
+ use_cache: Optional[bool] = None,
996
+ output_attentions: Optional[bool] = None,
997
+ output_hidden_states: Optional[bool] = None,
998
+ return_dict: Optional[bool] = None,
999
+ ) -> Union[Tuple, BaseModelOutputWithPast]:
1000
+ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
1001
+ output_hidden_states = (
1002
+ output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
1003
+ )
1004
+ use_cache = use_cache if use_cache is not None else self.config.use_cache
1005
+
1006
+ return_dict = return_dict if return_dict is not None else self.config.use_return_dict
1007
+
1008
+ # retrieve input_ids and inputs_embeds
1009
+ if input_ids is not None and inputs_embeds is not None:
1010
+ raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
1011
+ elif input_ids is not None:
1012
+ batch_size, seq_length = input_ids.shape[:2]
1013
+ elif inputs_embeds is not None:
1014
+ batch_size, seq_length = inputs_embeds.shape[:2]
1015
+ else:
1016
+ raise ValueError("You have to specify either input_ids or inputs_embeds")
1017
+
1018
+ if self.gradient_checkpointing and self.training:
1019
+ if use_cache:
1020
+ logger.warning_once(
1021
+ "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..."
1022
+ )
1023
+ use_cache = False
1024
+
1025
+ past_key_values_length = 0
1026
+ if use_cache:
1027
+ use_legacy_cache = not isinstance(past_key_values, Cache)
1028
+ if use_legacy_cache:
1029
+ past_key_values = DynamicCache.from_legacy_cache(past_key_values)
1030
+ past_key_values_length = past_key_values.get_usable_length(seq_length)
1031
+
1032
+ if position_ids is None:
1033
+ device = input_ids.device if input_ids is not None else inputs_embeds.device
1034
+ position_ids = torch.arange(
1035
+ past_key_values_length, seq_length + past_key_values_length, dtype=torch.long, device=device
1036
+ )
1037
+ position_ids = position_ids.unsqueeze(0)
1038
+
1039
+ if inputs_embeds is None:
1040
+ inputs_embeds = self.embed_tokens(input_ids) * self.config.scale_emb
1041
+
1042
+ if self._use_flash_attention_2:
1043
+ # 2d mask is passed through the layers
1044
+ attention_mask = attention_mask if (attention_mask is not None and 0 in attention_mask) else None
1045
+ elif self._use_sdpa and not output_attentions:
1046
+ # output_attentions=True can not be supported when using SDPA, and we fall back on
1047
+ # the manual implementation that requires a 4D causal mask in all cases.
1048
+ attention_mask = _prepare_4d_causal_attention_mask_for_sdpa(
1049
+ attention_mask,
1050
+ (batch_size, seq_length),
1051
+ inputs_embeds,
1052
+ past_key_values_length,
1053
+ )
1054
+ else:
1055
+ # 4d mask is passed through the layers
1056
+ attention_mask = _prepare_4d_causal_attention_mask(
1057
+ attention_mask, (batch_size, seq_length), inputs_embeds, past_key_values_length
1058
+ )
1059
+
1060
+ # embed positions
1061
+ hidden_states = inputs_embeds
1062
+
1063
+ # decoder layers
1064
+ all_hidden_states = () if output_hidden_states else None
1065
+ all_self_attns = () if output_attentions else None
1066
+ next_decoder_cache = None
1067
+
1068
+ for decoder_layer in self.layers:
1069
+ if output_hidden_states:
1070
+ all_hidden_states += (hidden_states,)
1071
+
1072
+ if self.gradient_checkpointing and self.training:
1073
+ layer_outputs = self._gradient_checkpointing_func(
1074
+ decoder_layer.__call__,
1075
+ hidden_states,
1076
+ attention_mask,
1077
+ position_ids,
1078
+ past_key_values,
1079
+ output_attentions,
1080
+ use_cache,
1081
+ )
1082
+ else:
1083
+ layer_outputs = decoder_layer(
1084
+ hidden_states,
1085
+ attention_mask=attention_mask,
1086
+ position_ids=position_ids,
1087
+ past_key_value=past_key_values,
1088
+ output_attentions=output_attentions,
1089
+ use_cache=use_cache,
1090
+ )
1091
+
1092
+ hidden_states = layer_outputs[0]
1093
+
1094
+ if use_cache:
1095
+ next_decoder_cache = layer_outputs[2 if output_attentions else 1]
1096
+
1097
+ if output_attentions:
1098
+ all_self_attns += (layer_outputs[1],)
1099
+
1100
+ hidden_states = self.norm(hidden_states)
1101
+
1102
+ # add hidden states from the last decoder layer
1103
+ if output_hidden_states:
1104
+ all_hidden_states += (hidden_states,)
1105
+
1106
+ next_cache = None
1107
+ if use_cache:
1108
+ next_cache = next_decoder_cache.to_legacy_cache() if use_legacy_cache else next_decoder_cache
1109
+ if not return_dict:
1110
+ return tuple(v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns] if v is not None)
1111
+ return BaseModelOutputWithPast(
1112
+ last_hidden_state=hidden_states,
1113
+ past_key_values=next_cache,
1114
+ hidden_states=all_hidden_states,
1115
+ attentions=all_self_attns,
1116
+ )
1117
+
1118
+
1119
+ class MiniCPMForCausalLM(MiniCPMPreTrainedModel):
1120
+ _tied_weights_keys = ["lm_head.weight"]
1121
+
1122
+ def __init__(self, config):
1123
+ super().__init__(config)
1124
+ self.model = MiniCPMModel(config)
1125
+ self.vocab_size = config.vocab_size
1126
+ self.lm_head = nn.Linear(config.hidden_size, config.vocab_size, bias=False)
1127
+
1128
+ # Initialize weights and apply final processing
1129
+ self.post_init()
1130
+
1131
+ def get_input_embeddings(self):
1132
+ return self.model.embed_tokens
1133
+
1134
+ def set_input_embeddings(self, value):
1135
+ self.model.embed_tokens = value
1136
+
1137
+ def get_output_embeddings(self):
1138
+ return self.lm_head
1139
+
1140
+ def set_output_embeddings(self, new_embeddings):
1141
+ self.lm_head = new_embeddings
1142
+
1143
+ def set_decoder(self, decoder):
1144
+ self.model = decoder
1145
+
1146
+ def get_decoder(self):
1147
+ return self.model
1148
+
1149
+ @add_start_docstrings_to_model_forward(MINICPM_INPUTS_DOCSTRING)
1150
+ @replace_return_docstrings(output_type=CausalLMOutputWithPast, config_class=_CONFIG_FOR_DOC)
1151
+ def forward(
1152
+ self,
1153
+ input_ids: torch.LongTensor = None,
1154
+ attention_mask: Optional[torch.Tensor] = None,
1155
+ position_ids: Optional[torch.LongTensor] = None,
1156
+ past_key_values: Optional[List[torch.FloatTensor]] = None,
1157
+ inputs_embeds: Optional[torch.FloatTensor] = None,
1158
+ labels: Optional[torch.LongTensor] = None,
1159
+ use_cache: Optional[bool] = None,
1160
+ output_attentions: Optional[bool] = None,
1161
+ output_hidden_states: Optional[bool] = None,
1162
+ return_dict: Optional[bool] = None,
1163
+ ) -> Union[Tuple, CausalLMOutputWithPast]:
1164
+ r"""
1165
+ Args:
1166
+ labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
1167
+ Labels for computing the masked language modeling loss. Indices should either be in `[0, ...,
1168
+ config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored
1169
+ (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`.
1170
+
1171
+ Returns:
1172
+
1173
+ Example:
1174
+
1175
+ ```python
1176
+ >>> from transformers import AutoTokenizer, MiniCPMForCausalLM
1177
+
1178
+ >>> model = MiniCPMForCausalLM.from_pretrained(PATH_TO_CONVERTED_WEIGHTS)
1179
+ >>> tokenizer = AutoTokenizer.from_pretrained(PATH_TO_CONVERTED_TOKENIZER)
1180
+
1181
+ >>> prompt = "Hey, are you conscious? Can you talk to me?"
1182
+ >>> inputs = tokenizer(prompt, return_tensors="pt")
1183
+
1184
+ >>> # Generate
1185
+ >>> generate_ids = model.generate(inputs.input_ids, max_length=30)
1186
+ >>> tokenizer.batch_decode(generate_ids, skip_special_tokens=True, clean_up_tokenization_spaces=False)[0]
1187
+ "Hey, are you conscious? Can you talk to me?\nI'm not conscious, but I can talk to you."
1188
+ ```"""
1189
+ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
1190
+ output_hidden_states = (
1191
+ output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
1192
+ )
1193
+ return_dict = return_dict if return_dict is not None else self.config.use_return_dict
1194
+
1195
+ # decoder outputs consists of (dec_features, layer_state, dec_hidden, dec_attn)
1196
+ outputs = self.model(
1197
+ input_ids=input_ids,
1198
+ attention_mask=attention_mask,
1199
+ position_ids=position_ids,
1200
+ past_key_values=past_key_values,
1201
+ inputs_embeds=inputs_embeds,
1202
+ use_cache=use_cache,
1203
+ output_attentions=output_attentions,
1204
+ output_hidden_states=output_hidden_states,
1205
+ return_dict=return_dict,
1206
+ )
1207
+
1208
+ hidden_states = outputs[0]
1209
+ if self.config.pretraining_tp > 1:
1210
+ lm_head_slices = self.lm_head.weight.split(self.vocab_size // self.config.pretraining_tp, dim=0)
1211
+ logits = [F.linear(hidden_states, lm_head_slices[i]) for i in range(self.config.pretraining_tp)]
1212
+ logits = torch.cat(logits, dim=-1)
1213
+ else:
1214
+ logits = self.lm_head(hidden_states / (self.config.hidden_size / self.config.dim_model_base))
1215
+ logits = logits.float()
1216
+
1217
+ loss = None
1218
+ if labels is not None:
1219
+ # Shift so that tokens < n predict n
1220
+ shift_logits = logits[..., :-1, :].contiguous()
1221
+ shift_labels = labels[..., 1:].contiguous()
1222
+ # Flatten the tokens
1223
+ loss_fct = CrossEntropyLoss()
1224
+ shift_logits = shift_logits.view(-1, self.config.vocab_size)
1225
+ shift_labels = shift_labels.view(-1)
1226
+ # Enable model parallelism
1227
+ shift_labels = shift_labels.to(shift_logits.device)
1228
+ loss = loss_fct(shift_logits, shift_labels)
1229
+
1230
+ if not return_dict:
1231
+ output = (logits,) + outputs[1:]
1232
+ return (loss,) + output if loss is not None else output
1233
+
1234
+ return CausalLMOutputWithPast(
1235
+ loss=loss,
1236
+ logits=logits,
1237
+ past_key_values=outputs.past_key_values,
1238
+ hidden_states=outputs.hidden_states,
1239
+ attentions=outputs.attentions,
1240
+ )
1241
+
1242
+ def prepare_inputs_for_generation(
1243
+ self, input_ids, past_key_values=None, attention_mask=None, inputs_embeds=None, **kwargs
1244
+ ):
1245
+ if past_key_values is not None:
1246
+ if isinstance(past_key_values, Cache):
1247
+ cache_length = past_key_values.get_seq_length()
1248
+ past_length = past_key_values.seen_tokens
1249
+ max_cache_length = past_key_values.get_max_length()
1250
+ else:
1251
+ cache_length = past_length = past_key_values[0][0].shape[2]
1252
+ max_cache_length = None
1253
+
1254
+ # Keep only the unprocessed tokens:
1255
+ # 1 - If the length of the attention_mask exceeds the length of input_ids, then we are in a setting where
1256
+ # some of the inputs are exclusivelly passed as part of the cache (e.g. when passing input_embeds as
1257
+ # input)
1258
+ if attention_mask is not None and attention_mask.shape[1] > input_ids.shape[1]:
1259
+ input_ids = input_ids[:, -(attention_mask.shape[1] - past_length) :]
1260
+ # 2 - If the past_length is smaller than input_ids', then input_ids holds all input tokens. We can discard
1261
+ # input_ids based on the past_length.
1262
+ elif past_length < input_ids.shape[1]:
1263
+ input_ids = input_ids[:, past_length:]
1264
+ # 3 - Otherwise (past_length >= input_ids.shape[1]), let's assume input_ids only has unprocessed tokens.
1265
+
1266
+ # If we are about to go beyond the maximum cache length, we need to crop the input attention mask.
1267
+ if (
1268
+ max_cache_length is not None
1269
+ and attention_mask is not None
1270
+ and cache_length + input_ids.shape[1] > max_cache_length
1271
+ ):
1272
+ attention_mask = attention_mask[:, -max_cache_length:]
1273
+
1274
+ position_ids = kwargs.get("position_ids", None)
1275
+ if attention_mask is not None and position_ids is None:
1276
+ # create position_ids on the fly for batch generation
1277
+ position_ids = attention_mask.long().cumsum(-1) - 1
1278
+ position_ids.masked_fill_(attention_mask == 0, 1)
1279
+ if past_key_values:
1280
+ position_ids = position_ids[:, -input_ids.shape[1] :]
1281
+
1282
+ # if `inputs_embeds` are passed, we only want to use them in the 1st generation step
1283
+ if inputs_embeds is not None and (past_key_values is None or cache_length == 0):
1284
+ model_inputs = {"inputs_embeds": inputs_embeds}
1285
+ else:
1286
+ model_inputs = {"input_ids": input_ids}
1287
+
1288
+ model_inputs.update(
1289
+ {
1290
+ "position_ids": position_ids,
1291
+ "past_key_values": past_key_values,
1292
+ "use_cache": kwargs.get("use_cache"),
1293
+ "attention_mask": attention_mask,
1294
+ }
1295
+ )
1296
+ return model_inputs
1297
+
1298
+ @staticmethod
1299
+ def _reorder_cache(past_key_values, beam_idx):
1300
+ reordered_past = ()
1301
+ for layer_past in past_key_values:
1302
+ reordered_past += (
1303
+ tuple(past_state.index_select(0, beam_idx.to(past_state.device)) for past_state in layer_past),
1304
+ )
1305
+ return reordered_past
1306
+
1307
+ @torch.inference_mode()
1308
+ def chat(self, tokenizer, query: str, history: List[Dict] = None, role: str = "user",
1309
+ max_length: int = 4096, num_beams=1, do_sample=True, top_p=0.8, temperature=0.3, logits_processor=None,
1310
+ **kwargs):
1311
+ if history is None:
1312
+ history = []
1313
+ if logits_processor:
1314
+ gen_kwargs = {"max_length": max_length, "num_beams": num_beams, "do_sample": do_sample, "top_p": top_p,
1315
+ "temperature": temperature, "logits_processor": logits_processor, **kwargs}
1316
+ else:
1317
+ gen_kwargs = {"max_length": max_length, "num_beams": num_beams, "do_sample": do_sample, "top_p": top_p,
1318
+ "temperature": temperature, "logits_processor": logits_processor, **kwargs}
1319
+
1320
+ history.append({"role": role, "content": query})
1321
+ history_str = tokenizer.apply_chat_template(history, tokenize=False, add_generation_prompt=False)
1322
+ inputs = tokenizer(history_str, return_tensors='pt').to(self.device)
1323
+ outputs = self.generate(**inputs, **gen_kwargs)
1324
+ outputs = outputs.tolist()[0][len(inputs["input_ids"][0]):-1]
1325
+ response = tokenizer.decode(outputs)
1326
+ pattern = re.compile(r".*?(?=<AI>|<用户>)", re.DOTALL)
1327
+ matches = pattern.findall(response)
1328
+ if len(matches) > 0:
1329
+ response = matches[0]
1330
+ history.append({"role": "assistant", "content": response})
1331
+ return response, history
1332
+
1333
+
1334
+ @add_start_docstrings(
1335
+ """
1336
+ The MiniCPM Model transformer with a sequence classification head on top (linear layer).
1337
+
1338
+ [`MiniCPMForSequenceClassification`] uses the last token in order to do the classification, as other causal models
1339
+ (e.g. GPT-2) do.
1340
+
1341
+ Since it does classification on the last token, it requires to know the position of the last token. If a
1342
+ `pad_token_id` is defined in the configuration, it finds the last token that is not a padding token in each row. If
1343
+ no `pad_token_id` is defined, it simply takes the last value in each row of the batch. Since it cannot guess the
1344
+ padding tokens when `inputs_embeds` are passed instead of `input_ids`, it does the same (take the last value in
1345
+ each row of the batch).
1346
+ """,
1347
+ MINICPM_START_DOCSTRING,
1348
+ )
1349
+ class MiniCPMForSequenceClassification(MiniCPMPreTrainedModel):
1350
+ def __init__(self, config):
1351
+ super().__init__(config)
1352
+ self.num_labels = config.num_labels
1353
+ self.model = MiniCPMModel(config)
1354
+ self.score = nn.Linear(config.hidden_size, self.num_labels, bias=False)
1355
+
1356
+ # Initialize weights and apply final processing
1357
+ self.post_init()
1358
+
1359
+ def get_input_embeddings(self):
1360
+ return self.model.embed_tokens
1361
+
1362
+ def set_input_embeddings(self, value):
1363
+ self.model.embed_tokens = value
1364
+
1365
+ @add_start_docstrings_to_model_forward(MINICPM_INPUTS_DOCSTRING)
1366
+ def forward(
1367
+ self,
1368
+ input_ids: torch.LongTensor = None,
1369
+ attention_mask: Optional[torch.Tensor] = None,
1370
+ position_ids: Optional[torch.LongTensor] = None,
1371
+ past_key_values: Optional[List[torch.FloatTensor]] = None,
1372
+ inputs_embeds: Optional[torch.FloatTensor] = None,
1373
+ labels: Optional[torch.LongTensor] = None,
1374
+ use_cache: Optional[bool] = None,
1375
+ output_attentions: Optional[bool] = None,
1376
+ output_hidden_states: Optional[bool] = None,
1377
+ return_dict: Optional[bool] = None,
1378
+ ) -> Union[Tuple, SequenceClassifierOutputWithPast]:
1379
+ r"""
1380
+ labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
1381
+ Labels for computing the sequence classification/regression loss. Indices should be in `[0, ...,
1382
+ config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
1383
+ `config.num_labels > 1` a classification loss is computed (Cross-Entropy).
1384
+ """
1385
+ return_dict = return_dict if return_dict is not None else self.config.use_return_dict
1386
+
1387
+ transformer_outputs = self.model(
1388
+ input_ids,
1389
+ attention_mask=attention_mask,
1390
+ position_ids=position_ids,
1391
+ past_key_values=past_key_values,
1392
+ inputs_embeds=inputs_embeds,
1393
+ use_cache=use_cache,
1394
+ output_attentions=output_attentions,
1395
+ output_hidden_states=output_hidden_states,
1396
+ return_dict=return_dict,
1397
+ )
1398
+ hidden_states = transformer_outputs[0]
1399
+ logits = self.score(hidden_states)
1400
+
1401
+ if input_ids is not None:
1402
+ batch_size = input_ids.shape[0]
1403
+ else:
1404
+ batch_size = inputs_embeds.shape[0]
1405
+
1406
+ if self.config.pad_token_id is None and batch_size != 1:
1407
+ raise ValueError("Cannot handle batch sizes > 1 if no padding token is defined.")
1408
+ if self.config.pad_token_id is None:
1409
+ sequence_lengths = -1
1410
+ else:
1411
+ if input_ids is not None:
1412
+ sequence_lengths = (torch.eq(input_ids, self.config.pad_token_id).int().argmax(-1) - 1).to(
1413
+ logits.device
1414
+ )
1415
+ else:
1416
+ sequence_lengths = -1
1417
+
1418
+ pooled_logits = logits[torch.arange(batch_size, device=logits.device), sequence_lengths]
1419
+
1420
+ loss = None
1421
+ if labels is not None:
1422
+ labels = labels.to(logits.device)
1423
+ if self.config.problem_type is None:
1424
+ if self.num_labels == 1:
1425
+ self.config.problem_type = "regression"
1426
+ elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int):
1427
+ self.config.problem_type = "single_label_classification"
1428
+ else:
1429
+ self.config.problem_type = "multi_label_classification"
1430
+
1431
+ if self.config.problem_type == "regression":
1432
+ loss_fct = MSELoss()
1433
+ if self.num_labels == 1:
1434
+ loss = loss_fct(pooled_logits.squeeze(), labels.squeeze())
1435
+ else:
1436
+ loss = loss_fct(pooled_logits, labels)
1437
+ elif self.config.problem_type == "single_label_classification":
1438
+ loss_fct = CrossEntropyLoss()
1439
+ loss = loss_fct(pooled_logits.view(-1, self.num_labels), labels.view(-1))
1440
+ elif self.config.problem_type == "multi_label_classification":
1441
+ loss_fct = BCEWithLogitsLoss()
1442
+ loss = loss_fct(pooled_logits, labels)
1443
+ if not return_dict:
1444
+ output = (pooled_logits,) + transformer_outputs[1:]
1445
+ return ((loss,) + output) if loss is not None else output
1446
+
1447
+ return SequenceClassifierOutputWithPast(
1448
+ loss=loss,
1449
+ logits=pooled_logits,
1450
+ past_key_values=transformer_outputs.past_key_values,
1451
+ hidden_states=transformer_outputs.hidden_states,
1452
+ attentions=transformer_outputs.attentions,
1453
+ )
modeling_minicpmv.py ADDED
@@ -0,0 +1,363 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ import math
2
+ from typing import List, Optional
3
+
4
+ import timm
5
+ import torch
6
+ import torchvision
7
+ from timm.data import IMAGENET_INCEPTION_MEAN, IMAGENET_INCEPTION_STD
8
+ from torchvision import transforms
9
+ from transformers import LlamaTokenizer
10
+
11
+ from .configuration_minicpm import MiniCPMVConfig
12
+ from .modeling_minicpm import MiniCPMPreTrainedModel, MiniCPMForCausalLM
13
+ from .resampler import Resampler
14
+
15
+
16
+ class MiniCPMVPreTrainedModel(MiniCPMPreTrainedModel):
17
+ config_class = MiniCPMVConfig
18
+
19
+
20
+ class MiniCPMV(MiniCPMVPreTrainedModel):
21
+ def __init__(self, config):
22
+ super().__init__(config)
23
+
24
+ self.llm = MiniCPMForCausalLM(config)
25
+ self.vpm = self.init_vision_module()
26
+ self.vision_dim = self.vpm.embed_dim
27
+ self.embed_dim = self.llm.config.hidden_size
28
+ self.resampler = self.init_resampler(self.embed_dim ,self.vision_dim)
29
+ self.transform = self.init_transform()
30
+
31
+
32
+ def init_vision_module(self):
33
+ model = timm.create_model(
34
+ self.config.vision_encoder,
35
+ pretrained=False,
36
+ num_classes=0,
37
+ dynamic_img_size=True,
38
+ dynamic_img_pad=True
39
+ )
40
+
41
+ if isinstance(model, timm.models.VisionTransformer):
42
+ if model.attn_pool is not None:
43
+ model.attn_pool = torch.nn.Identity()
44
+
45
+ if self.config.drop_vision_last_layer:
46
+ model.blocks = model.blocks[:-1]
47
+
48
+ return model
49
+
50
+ def init_resampler(self, embed_dim, vision_dim):
51
+ return Resampler(
52
+ grid_size=int(math.sqrt(self.config.query_num)),
53
+ embed_dim=embed_dim,
54
+ num_heads=embed_dim // 128,
55
+ kv_dim=vision_dim,
56
+ )
57
+
58
+ def init_transform(self):
59
+ return transforms.Compose([
60
+ transforms.Resize(
61
+ (self.config.image_size, self.config.image_size),
62
+ interpolation=torchvision.transforms.InterpolationMode.BICUBIC
63
+ ),
64
+ transforms.ToTensor(),
65
+ transforms.Normalize(mean=IMAGENET_INCEPTION_MEAN, std=IMAGENET_INCEPTION_STD)
66
+ ])
67
+
68
+
69
+
70
+ def get_vision_embedding(self, pixel_values):
71
+ res = []
72
+ dtype = self.vpm.pos_embed.data.dtype
73
+ for pixel_value in pixel_values:
74
+ vision_embedding = self.vpm.forward_features(pixel_value.unsqueeze(0).type(dtype))
75
+ if hasattr(self.vpm, 'num_prefix_tokens') and self.vpm.num_prefix_tokens > 0:
76
+ vision_embedding = vision_embedding[:, self.vpm.num_prefix_tokens:]
77
+ res.append(self.resampler(vision_embedding))
78
+ return torch.vstack(res)
79
+
80
+ def get_vllm_embedding(self, data):
81
+ if 'vision_hidden_states' not in data:
82
+ pixel_values_list = data['pixel_values']
83
+ vision_hidden_states = []
84
+ for pixel_values in pixel_values_list:
85
+ if len(pixel_values) > 0:
86
+ vision_hidden_states.append(self.get_vision_embedding(pixel_values))
87
+ elif self.training:
88
+ dtype = self.vpm.pos_embed.data.dtype
89
+ device = self.vpm.pos_embed.data.device
90
+ dummy_image = torch.zeros(
91
+ (1, 3, 224, 224),
92
+ device=device, dtype=dtype
93
+ )
94
+ vision_hidden_states.append(self.get_vision_embedding(dummy_image))
95
+ else:
96
+ vision_hidden_states.append([])
97
+
98
+ else:
99
+ vision_hidden_states = data['vision_hidden_states']
100
+
101
+ vllm_embedding = self.llm.model.embed_tokens(data['input_ids']) * self.llm.config.scale_emb
102
+ vision_hidden_states = [i.type(vllm_embedding.dtype) if isinstance(
103
+ i, torch.Tensor) else i for i in vision_hidden_states]
104
+
105
+ bs = len(data['input_ids'])
106
+ for i in range(bs):
107
+ cur_vs_hs = vision_hidden_states[i]
108
+ if len(cur_vs_hs) > 0:
109
+ cur_vllm_emb = vllm_embedding[i]
110
+ cur_image_bound = data['image_bound'][i]
111
+ if len(cur_image_bound) > 0:
112
+ image_indices = torch.stack(
113
+ [torch.arange(r[0], r[1], dtype=torch.long) for r in cur_image_bound]
114
+ ).to(vllm_embedding.device)
115
+
116
+ cur_vllm_emb.scatter_(0, image_indices.view(-1, 1).repeat(1, cur_vllm_emb.shape[-1]),
117
+ cur_vs_hs.view(-1, cur_vs_hs.shape[-1]))
118
+ elif self.training:
119
+ cur_vllm_emb += cur_vs_hs[0].mean() * 0
120
+
121
+ return vllm_embedding, vision_hidden_states
122
+
123
+ def forward(self, data, **kwargs):
124
+ vllm_embedding, vision_hidden_states = self.get_vllm_embedding(data)
125
+ position_ids = data["position_ids"]
126
+ if position_ids.dtype != torch.int64:
127
+ position_ids = position_ids.long()
128
+
129
+ return self.llm(
130
+ input_ids=None,
131
+ position_ids=position_ids,
132
+ inputs_embeds=vllm_embedding,
133
+ **kwargs
134
+ )
135
+
136
+
137
+ def _convert_to_tensors(self, tokenizer, input_str, max_inp_length: Optional[int] = None):
138
+ if tokenizer.add_bos_token:
139
+ input_ids = tokenizer.encode(input_str)
140
+ else:
141
+ input_ids = [tokenizer.bos_id] + tokenizer.encode(input_str)
142
+ if max_inp_length is not None:
143
+ input_ids = input_ids[: max_inp_length]
144
+ input_ids = torch.tensor(input_ids, dtype=torch.int32)
145
+
146
+ image_start_tokens = torch.where(input_ids == tokenizer.im_start_id)[0]
147
+ # 跳过 im_start
148
+ image_start_tokens += 1
149
+ image_end_tokens = torch.where(input_ids == tokenizer.im_end_id)[0]
150
+ valid_image_nums = max(len(image_start_tokens), len(image_end_tokens))
151
+ image_bound = torch.hstack(
152
+ [image_start_tokens[: valid_image_nums].unsqueeze(-1),
153
+ image_end_tokens[:valid_image_nums].unsqueeze(-1)]
154
+ )
155
+
156
+ model_input = {}
157
+ model_input["input_ids"] = input_ids.unsqueeze(0).to(self.device)
158
+ model_input["image_bound"] = image_bound
159
+
160
+ return model_input
161
+
162
+
163
+ def _process_list(self, tokenizer, data_list: List[str], max_inp_length: Optional[int] = None):
164
+ pad_keys = ['input_ids']
165
+ input_tensors = []
166
+ for data in data_list:
167
+ input_tensors.append(self._convert_to_tensors(tokenizer, data, max_inp_length))
168
+ padded = {}
169
+ for key in pad_keys:
170
+ padded[key] = pad(input_tensors, key, padding_side="left").to(self.device)
171
+ padded['image_bound'] = [i['image_bound'] for i in input_tensors]
172
+ return padded
173
+
174
+ def _decode(self, inputs_embeds, tokenizer, **kwargs):
175
+ output = self.llm.generate(
176
+ inputs_embeds=inputs_embeds,
177
+ pad_token_id=0,
178
+ eos_token_id=tokenizer.eos_token_id,
179
+ **kwargs
180
+ )
181
+ return self._decode_text(output, tokenizer)
182
+
183
+ def _decode_text(self, result_ids, tokenizer):
184
+ result_text = []
185
+ for result in result_ids:
186
+ result = result[result != 0]
187
+ if result[0] == tokenizer.bos_id:
188
+ result = result[1:]
189
+ if result[-1] == tokenizer.eos_id:
190
+ result = result[:-1]
191
+ result_text.append(tokenizer.decode(result).strip())
192
+ return result_text
193
+
194
+ def generate(
195
+ self,
196
+ data_list=None,
197
+ img_list=None,
198
+ tokenizer=None,
199
+ max_inp_length: Optional[int] = None,
200
+ vision_hidden_states=None,
201
+ return_vision_hidden_states=False,
202
+ **kwargs
203
+ ):
204
+
205
+ assert data_list is not None
206
+ bs = len(data_list)
207
+ if img_list == None:
208
+ img_list = [[] for i in range(bs)]
209
+ assert bs == len(img_list)
210
+
211
+ model_inputs = self._process_list(tokenizer, data_list, max_inp_length)
212
+
213
+ if vision_hidden_states is None:
214
+ pixel_values = []
215
+ for i in range(bs):
216
+ img_inps = []
217
+ for img in img_list[i]:
218
+ img_inps.append(self.transform(img))
219
+ if img_inps:
220
+ pixel_values.append(torch.stack(img_inps).to(self.device))
221
+ else:
222
+ pixel_values.append([])
223
+ model_inputs['pixel_values'] = pixel_values
224
+ else:
225
+ model_inputs['vision_hidden_states'] = vision_hidden_states
226
+
227
+ with torch.inference_mode():
228
+ model_inputs['inputs_embeds'], vision_hidden_states = self.get_vllm_embedding(model_inputs)
229
+
230
+ result = self._decode(model_inputs['inputs_embeds'], tokenizer, **kwargs)
231
+
232
+ if return_vision_hidden_states:
233
+ return result, vision_hidden_states
234
+
235
+ return result
236
+
237
+
238
+ def chat(self, image, msgs, context, tokenizer, vision_hidden_states=None, max_new_tokens=2048, sampling=False, **kwargs):
239
+ if isinstance(msgs, str):
240
+ msgs = json.loads(msgs)
241
+ # msgs to prompt
242
+ prompt = ''
243
+ for i, msg in enumerate(msgs):
244
+ role = msg['role']
245
+ content = msg['content']
246
+ assert role in ['user', 'assistant']
247
+ if i == 0:
248
+ assert role == 'user', 'The role of first msg should be user'
249
+ content = tokenizer.im_start + tokenizer.unk_token * self.config.query_num + tokenizer.im_end + '\n' + content
250
+ prompt += '<用户>' if role=='user' else '<AI>'
251
+ prompt += content
252
+ prompt += '<AI>'
253
+ final_input = prompt
254
+
255
+ if sampling:
256
+ generation_config = {
257
+ 'top_p': 0.8,
258
+ 'top_k': 100,
259
+ 'temperature':0.6,
260
+ 'do_sample': True
261
+ }
262
+ else:
263
+ generation_config = {
264
+ 'num_beams': 3,
265
+ 'repetition_penalty': 1.2,
266
+ }
267
+
268
+ generation_config.update((k, kwargs[k]) for k in generation_config.keys() & kwargs.keys())
269
+
270
+ with torch.inference_mode():
271
+ res, vision_hidden_states = self.generate(
272
+ data_list=[final_input],
273
+ max_inp_length=2048,
274
+ img_list=[[image]],
275
+ tokenizer=tokenizer,
276
+ max_new_tokens=max_new_tokens,
277
+ vision_hidden_states=vision_hidden_states,
278
+ return_vision_hidden_states=True,
279
+ **generation_config
280
+ )
281
+ answer = res[0]
282
+ context = msgs
283
+ context.append({'role':'assistant', 'content': answer})
284
+
285
+ return answer, context, generation_config
286
+
287
+
288
+ class LlamaTokenizerWrapper(LlamaTokenizer):
289
+ def __init__(self, **kwargs):
290
+ super().__init__(**kwargs)
291
+ self.im_start = "<image>"
292
+ self.im_end = "</image>"
293
+ self.ref_start = "<ref>"
294
+ self.ref_end = "</ref>"
295
+ self.box_start = "<box>"
296
+ self.box_end = "</box>"
297
+ self.quad_start = "<quad>"
298
+ self.quad_end = "</quad>"
299
+
300
+ @property
301
+ def eos_id(self):
302
+ return self.sp_model.eos_id()
303
+
304
+ @property
305
+ def bos_id(self):
306
+ return self.sp_model.bos_id()
307
+
308
+ @property
309
+ def unk_id(self):
310
+ return self.sp_model.unk_id()
311
+
312
+ @property
313
+ def im_start_id(self):
314
+ return self._convert_token_to_id(self.im_start)
315
+
316
+ @property
317
+ def im_end_id(self):
318
+ return self._convert_token_to_id(self.im_end)
319
+
320
+
321
+ def pad(orig_items, key, max_length=None, padding_value=0, padding_side="left"):
322
+ items = []
323
+ if isinstance(orig_items[0][key], list):
324
+ assert isinstance(orig_items[0][key][0], torch.Tensor)
325
+ for it in orig_items:
326
+ for tr in it[key]:
327
+ items.append({key: tr})
328
+ else:
329
+ assert isinstance(orig_items[0][key], torch.Tensor)
330
+ items = orig_items
331
+
332
+ batch_size = len(items)
333
+ shape = items[0][key].shape
334
+ dim = len(shape)
335
+ assert dim <= 3
336
+ if max_length is None:
337
+ max_length = 0
338
+ max_length = max(max_length, max(item[key].shape[-1] for item in items))
339
+ min_length = min(item[key].shape[-1] for item in items)
340
+ dtype = items[0][key].dtype
341
+
342
+ if dim == 1:
343
+ return torch.cat([item[key] for item in items], dim=0)
344
+ elif dim == 2:
345
+ if max_length == min_length:
346
+ return torch.cat([item[key] for item in items], dim=0)
347
+ tensor = torch.zeros((batch_size, max_length), dtype=dtype) + padding_value
348
+ else:
349
+ tensor = torch.zeros((batch_size, max_length, shape[-1]), dtype=dtype) + padding_value
350
+
351
+ for i, item in enumerate(items):
352
+ if dim == 2:
353
+ if padding_side == "left":
354
+ tensor[i, -len(item[key][0]):] = item[key][0].clone()
355
+ else:
356
+ tensor[i, : len(item[key][0])] = item[key][0].clone()
357
+ elif dim == 3:
358
+ if padding_side == "left":
359
+ tensor[i, -len(item[key][0]):, :] = item[key][0].clone()
360
+ else:
361
+ tensor[i, : len(item[key][0]), :] = item[key][0].clone()
362
+
363
+ return tensor
reload_metrics.json ADDED
@@ -0,0 +1,32 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "perplexity": 9.117921717817715,
3
+ "evaluation_dataset": "wikitext2",
4
+ "sequence_length": 512,
5
+ "evaluated_chunks": 4,
6
+ "batch_size": 1,
7
+ "elapsed_seconds": 5.380303705111146,
8
+ "tokens_per_second": 379.90420467496176,
9
+ "ppl_comparison": {
10
+ "checked": true,
11
+ "passed": true,
12
+ "pre_save_ppl": 9.117921717817715,
13
+ "reload_ppl": 9.117921717817715,
14
+ "abs_diff": 0.0,
15
+ "rel_diff": 0.0,
16
+ "abs_tol": 0.0001,
17
+ "rel_tol": 1e-05
18
+ },
19
+ "original_ppl_comparison": {
20
+ "checked": true,
21
+ "passed": false,
22
+ "original_result_ppl": 10.129248110722097,
23
+ "pre_save_ppl": 9.117921717817715,
24
+ "reload_ppl": 9.117921717817715,
25
+ "pre_abs_diff": 1.0113263929043814,
26
+ "pre_rel_diff": 0.09984219774751728,
27
+ "reload_abs_diff": 1.0113263929043814,
28
+ "reload_rel_diff": 0.09984219774751728,
29
+ "abs_tol": 0.0001,
30
+ "rel_tol": 1e-05
31
+ }
32
+ }
resampler.py ADDED
@@ -0,0 +1,163 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # Copyright (c) Alibaba Cloud.
2
+ #
3
+ # This source code is licensed under the license found in the
4
+ # LICENSE file in the root directory of this source tree.
5
+
6
+ from collections import OrderedDict
7
+ import math
8
+ import requests
9
+ from io import BytesIO
10
+ from functools import partial
11
+ from PIL import Image
12
+ from typing import Callable, Optional, Sequence, Tuple, List, Union
13
+ import numpy as np
14
+
15
+ import torch
16
+ from torch import nn
17
+ from torch.nn import functional as F
18
+ from torch.nn.init import trunc_normal_
19
+ from torchvision import transforms
20
+ from torchvision.transforms import InterpolationMode
21
+
22
+ def get_abs_pos(abs_pos, tgt_size):
23
+ # abs_pos: L, C
24
+ # tgt_size: M
25
+ # return: M, C
26
+ src_size = int(math.sqrt(abs_pos.size(0)))
27
+ tgt_size = int(math.sqrt(tgt_size))
28
+ dtype = abs_pos.dtype
29
+
30
+ if src_size != tgt_size:
31
+ return F.interpolate(
32
+ abs_pos.float().reshape(1, src_size, src_size, -1).permute(0, 3, 1, 2),
33
+ size=(tgt_size, tgt_size),
34
+ mode="bicubic",
35
+ align_corners=False,
36
+ ).permute(0, 2, 3, 1).flatten(0, 2).to(dtype=dtype)
37
+ else:
38
+ return abs_pos
39
+
40
+
41
+ # https://github.com/facebookresearch/mae/blob/efb2a8062c206524e35e47d04501ed4f544c0ae8/util/pos_embed.py#L20
42
+ def get_2d_sincos_pos_embed(embed_dim, grid_size, cls_token=False):
43
+ """
44
+ grid_size: int of the grid height and width
45
+ return:
46
+ pos_embed: [grid_size*grid_size, embed_dim] or [1+grid_size*grid_size, embed_dim] (w/ or w/o cls_token)
47
+ """
48
+ grid_h = np.arange(grid_size, dtype=np.float32)
49
+ grid_w = np.arange(grid_size, dtype=np.float32)
50
+ grid = np.meshgrid(grid_w, grid_h) # here w goes first
51
+ grid = np.stack(grid, axis=0)
52
+
53
+ grid = grid.reshape([2, 1, grid_size, grid_size])
54
+ pos_embed = get_2d_sincos_pos_embed_from_grid(embed_dim, grid)
55
+ if cls_token:
56
+ pos_embed = np.concatenate([np.zeros([1, embed_dim]), pos_embed], axis=0)
57
+ return pos_embed
58
+
59
+
60
+ def get_2d_sincos_pos_embed_from_grid(embed_dim, grid):
61
+ assert embed_dim % 2 == 0
62
+
63
+ # use half of dimensions to encode grid_h
64
+ emb_h = get_1d_sincos_pos_embed_from_grid(embed_dim // 2, grid[0]) # (H*W, D/2)
65
+ emb_w = get_1d_sincos_pos_embed_from_grid(embed_dim // 2, grid[1]) # (H*W, D/2)
66
+
67
+ emb = np.concatenate([emb_h, emb_w], axis=1) # (H*W, D)
68
+ return emb
69
+
70
+
71
+ def get_1d_sincos_pos_embed_from_grid(embed_dim, pos):
72
+ """
73
+ embed_dim: output dimension for each position
74
+ pos: a list of positions to be encoded: size (M,)
75
+ out: (M, D)
76
+ """
77
+ assert embed_dim % 2 == 0
78
+ omega = np.arange(embed_dim // 2, dtype=np.float32)
79
+ omega /= embed_dim / 2.
80
+ omega = 1. / 10000 ** omega # (D/2,)
81
+
82
+ pos = pos.reshape(-1) # (M,)
83
+ out = np.einsum('m,d->md', pos, omega) # (M, D/2), outer product
84
+
85
+ emb_sin = np.sin(out) # (M, D/2)
86
+ emb_cos = np.cos(out) # (M, D/2)
87
+
88
+ emb = np.concatenate([emb_sin, emb_cos], axis=1) # (M, D)
89
+ return emb
90
+
91
+
92
+ class Resampler(nn.Module):
93
+ """
94
+ A 2D perceiver-resampler network with one cross attention layers by
95
+ (grid_size**2) learnable queries and 2d sincos pos_emb
96
+ Outputs:
97
+ A tensor with the shape of (grid_size**2, embed_dim)
98
+ """
99
+
100
+ def __init__(
101
+ self,
102
+ grid_size,
103
+ embed_dim,
104
+ num_heads,
105
+ kv_dim=None,
106
+ norm_layer=partial(nn.LayerNorm, eps=1e-6)
107
+ ):
108
+ super().__init__()
109
+ self.num_queries = grid_size ** 2
110
+ self.embed_dim = embed_dim
111
+ self.num_heads = num_heads
112
+
113
+ self.pos_embed = nn.Parameter(
114
+ torch.from_numpy(get_2d_sincos_pos_embed(embed_dim, grid_size)).float()
115
+ ).requires_grad_(False)
116
+
117
+ self.query = nn.Parameter(torch.zeros(self.num_queries, embed_dim))
118
+ trunc_normal_(self.query, std=.02)
119
+
120
+ if kv_dim is not None and kv_dim != embed_dim:
121
+ self.kv_proj = nn.Linear(kv_dim, embed_dim, bias=False)
122
+ else:
123
+ self.kv_proj = nn.Identity()
124
+
125
+ self.attn = nn.MultiheadAttention(embed_dim, num_heads)
126
+ self.ln_q = norm_layer(embed_dim)
127
+ self.ln_kv = norm_layer(embed_dim)
128
+
129
+ self.ln_post = norm_layer(embed_dim)
130
+ self.proj = nn.Parameter((embed_dim ** -0.5) * torch.randn(embed_dim, embed_dim))
131
+
132
+ self.apply(self._init_weights)
133
+
134
+ def _init_weights(self, m):
135
+ if isinstance(m, nn.Linear):
136
+ trunc_normal_(m.weight, std=.02)
137
+ if isinstance(m, nn.Linear) and m.bias is not None:
138
+ nn.init.constant_(m.bias, 0)
139
+ elif isinstance(m, nn.LayerNorm):
140
+ nn.init.constant_(m.bias, 0)
141
+ nn.init.constant_(m.weight, 1.0)
142
+
143
+ def forward(self, x, attn_mask=None):
144
+ pos_embed = get_abs_pos(self.pos_embed, x.size(1))
145
+
146
+ x = self.kv_proj(x)
147
+ x = self.ln_kv(x).permute(1, 0, 2)
148
+
149
+ N = x.shape[1]
150
+ q = self.ln_q(self.query)
151
+ out = self.attn(
152
+ self._repeat(q, N) + self.pos_embed.unsqueeze(1),
153
+ x + pos_embed.unsqueeze(1),
154
+ x,
155
+ attn_mask=attn_mask)[0]
156
+ x = out.permute(1, 0, 2)
157
+
158
+ x = self.ln_post(x)
159
+ x = x @ self.proj
160
+ return x
161
+
162
+ def _repeat(self, query, N: int):
163
+ return query.unsqueeze(1).repeat(1, N, 1)
tokenizer.json ADDED
@@ -0,0 +1,3 @@
 
 
 
 
1
+ version https://git-lfs.github.com/spec/v1
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+ oid sha256:1d4b7fd76c5f7a9dd1968ea38944a0f1c450812205be84ab13c24b91f43aaedb
3
+ size 11178618
tokenizer_config.json ADDED
@@ -0,0 +1,31 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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+ {
2
+ "auto_map": {
3
+ "AutoTokenizer": [
4
+ "modeling_minicpmv.LlamaTokenizerWrapper",
5
+ null
6
+ ]
7
+ },
8
+ "backend": "tokenizers",
9
+ "bos_token": "<s>",
10
+ "clean_up_tokenization_spaces": false,
11
+ "eos_token": "</s>",
12
+ "extra_special_tokens": [
13
+ "<ref>",
14
+ "<image>",
15
+ "</quad>",
16
+ "</image>",
17
+ "<quad>",
18
+ "</ref>",
19
+ "<box>",
20
+ "</box>"
21
+ ],
22
+ "is_local": true,
23
+ "legacy": true,
24
+ "model_max_length": 1000000000000000019884624838656,
25
+ "pad_token": "</s>",
26
+ "sp_model_kwargs": {},
27
+ "spaces_between_special_tokens": false,
28
+ "tokenizer_class": "TokenizersBackend",
29
+ "unk_token": "<unk>",
30
+ "use_default_system_prompt": false
31
+ }