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- d8ec4feed7ff02230d96e38591bb267ac25f5d9b55f98e08ebf7d6449890f7ce (c8eaaa6eeea63314527020178f732f03666b5634)

README.md ADDED
@@ -0,0 +1,85 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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+ ---
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+ thumbnail: "https://assets-global.website-files.com/646b351987a8d8ce158d1940/64ec9e96b4334c0e1ac41504_Logo%20with%20white%20text.svg"
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+ base_model: cognitivecomputations/dolphin-2_6-phi-2
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+ metrics:
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+ - memory_disk
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+ - memory_inference
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+ - inference_latency
8
+ - inference_throughput
9
+ - inference_CO2_emissions
10
+ - inference_energy_consumption
11
+ tags:
12
+ - pruna-ai
13
+ ---
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+ <!-- header start -->
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+ <!-- 200823 -->
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+ <div style="width: auto; margin-left: auto; margin-right: auto">
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+ <a href="https://www.pruna.ai/" target="_blank" rel="noopener noreferrer">
18
+ <img src="https://i.imgur.com/eDAlcgk.png" alt="PrunaAI" style="width: 100%; min-width: 400px; display: block; margin: auto;">
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+ </a>
20
+ </div>
21
+ <!-- header end -->
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+
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+ [![Twitter](https://img.shields.io/twitter/follow/PrunaAI?style=social)](https://twitter.com/PrunaAI)
24
+ [![GitHub](https://img.shields.io/github/followers/PrunaAI?label=Follow%20%40PrunaAI&style=social)](https://github.com/PrunaAI)
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+ [![LinkedIn](https://img.shields.io/badge/LinkedIn-Connect-blue)](https://www.linkedin.com/company/93832878/admin/feed/posts/?feedType=following)
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+ [![Discord](https://img.shields.io/badge/Discord-Join%20Us-blue?style=social&logo=discord)](https://discord.gg/CP4VSgck)
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+
28
+ # Simply make AI models cheaper, smaller, faster, and greener!
29
+
30
+ - Give a thumbs up if you like this model!
31
+ - Contact us and tell us which model to compress next [here](https://www.pruna.ai/contact).
32
+ - Request access to easily compress your *own* AI models [here](https://z0halsaff74.typeform.com/pruna-access?typeform-source=www.pruna.ai).
33
+ - Read the documentations to know more [here](https://pruna-ai-pruna.readthedocs-hosted.com/en/latest/)
34
+ - Join Pruna AI community on Discord [here](https://discord.gg/CP4VSgck) to share feedback/suggestions or get help.
35
+
36
+ ## Results
37
+
38
+ ![image info](./plots.png)
39
+
40
+ **Frequently Asked Questions**
41
+ - ***How does the compression work?*** The model is compressed with llm-int8.
42
+ - ***How does the model quality change?*** The quality of the model output might vary compared to the base model.
43
+ - ***How is the model efficiency evaluated?*** These results were obtained on HARDWARE_NAME with configuration described in `model/smash_config.json` and are obtained after a hardware warmup. The smashed model is directly compared to the original base model. Efficiency results may vary in other settings (e.g. other hardware, image size, batch size, ...). We recommend to directly run them in the use-case conditions to know if the smashed model can benefit you.
44
+ - ***What is the model format?*** We use safetensors.
45
+ - ***What calibration data has been used?*** If needed by the compression method, we used WikiText as the calibration data.
46
+ - ***What is the naming convention for Pruna Huggingface models?*** We take the original model name and append "turbo", "tiny", or "green" if the smashed model has a measured inference speed, inference memory, or inference energy consumption which is less than 90% of the original base model.
47
+ - ***How to compress my own models?*** You can request premium access to more compression methods and tech support for your specific use-cases [here](https://z0halsaff74.typeform.com/pruna-access?typeform-source=www.pruna.ai).
48
+ - ***What are "first" metrics?*** Results mentioning "first" are obtained after the first run of the model. The first run might take more memory or be slower than the subsequent runs due cuda overheads.
49
+ - ***What are "Sync" and "Async" metrics?*** "Sync" metrics are obtained by syncing all GPU processes and stop measurement when all of them are executed. "Async" metrics are obtained without syncing all GPU processes and stop when the model output can be used by the CPU. We provide both metrics since both could be relevant depending on the use-case. We recommend to test the efficiency gains directly in your use-cases.
50
+
51
+ ## Setup
52
+
53
+ You can run the smashed model with these steps:
54
+
55
+ 0. Check requirements from the original repo cognitivecomputations/dolphin-2_6-phi-2 installed. In particular, check python, cuda, and transformers versions.
56
+ 1. Make sure that you have installed quantization related packages.
57
+ ```bash
58
+ pip install transformers accelerate bitsandbytes>0.37.0
59
+ ```
60
+ 2. Load & run the model.
61
+ ```python
62
+ from transformers import AutoModelForCausalLM, AutoTokenizer
63
+
64
+
65
+ model = AutoModelForCausalLM.from_pretrained("PrunaAI/cognitivecomputations-dolphin-2_6-phi-2-bnb-4bit-smashed", trust_remote_code=True, device_map='auto')
66
+ tokenizer = AutoTokenizer.from_pretrained("cognitivecomputations/dolphin-2_6-phi-2")
67
+
68
+ input_ids = tokenizer("What is the color of prunes?,", return_tensors='pt').to(model.device)["input_ids"]
69
+
70
+ outputs = model.generate(input_ids, max_new_tokens=216)
71
+ tokenizer.decode(outputs[0])
72
+ ```
73
+
74
+ ## Configurations
75
+
76
+ The configuration info are in `smash_config.json`.
77
+
78
+ ## Credits & License
79
+
80
+ The license of the smashed model follows the license of the original model. Please check the license of the original model cognitivecomputations/dolphin-2_6-phi-2 before using this model which provided the base model. The license of the `pruna-engine` is [here](https://pypi.org/project/pruna-engine/) on Pypi.
81
+
82
+ ## Want to compress other models?
83
+
84
+ - Contact us and tell us which model to compress next [here](https://www.pruna.ai/contact).
85
+ - Request access to easily compress your own AI models [here](https://z0halsaff74.typeform.com/pruna-access?typeform-source=www.pruna.ai).
added_tokens.json ADDED
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+ }
config.json ADDED
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1
+ {
2
+ "_name_or_path": "/ceph/hdd/staff/charpent/.cache/modelsl07ahlnoi8xqlpdb",
3
+ "activation_function": "gelu_new",
4
+ "architectures": [
5
+ "PhiForCausalLM"
6
+ ],
7
+ "attn_pdrop": 0.0,
8
+ "auto_map": {
9
+ "AutoConfig": "configuration_phi.PhiConfig",
10
+ "AutoModelForCausalLM": "modeling_phi.PhiForCausalLM"
11
+ },
12
+ "embd_pdrop": 0.0,
13
+ "flash_attn": false,
14
+ "flash_rotary": false,
15
+ "fused_dense": false,
16
+ "img_processor": null,
17
+ "initializer_range": 0.02,
18
+ "layer_norm_epsilon": 1e-05,
19
+ "model_type": "phi-msft",
20
+ "n_embd": 2560,
21
+ "n_head": 32,
22
+ "n_head_kv": null,
23
+ "n_inner": null,
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+ "n_layer": 32,
25
+ "n_positions": 2048,
26
+ "quantization_config": {
27
+ "_load_in_4bit": true,
28
+ "_load_in_8bit": false,
29
+ "bnb_4bit_compute_dtype": "bfloat16",
30
+ "bnb_4bit_quant_storage": "uint8",
31
+ "bnb_4bit_quant_type": "fp4",
32
+ "bnb_4bit_use_double_quant": false,
33
+ "llm_int8_enable_fp32_cpu_offload": false,
34
+ "llm_int8_has_fp16_weight": false,
35
+ "llm_int8_skip_modules": [
36
+ "lm_head"
37
+ ],
38
+ "llm_int8_threshold": 6.0,
39
+ "load_in_4bit": true,
40
+ "load_in_8bit": false,
41
+ "quant_method": "bitsandbytes"
42
+ },
43
+ "resid_pdrop": 0.1,
44
+ "rotary_dim": 32,
45
+ "tie_word_embeddings": false,
46
+ "torch_dtype": "float16",
47
+ "transformers_version": "4.40.0",
48
+ "use_cache": false,
49
+ "vocab_size": 51200
50
+ }
configuration_phi.py ADDED
@@ -0,0 +1,62 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # Copyright (c) Microsoft Corporation.
2
+ # Licensed under the MIT license.
3
+
4
+ import math
5
+ from typing import Optional
6
+
7
+ from transformers import PretrainedConfig
8
+
9
+
10
+ class PhiConfig(PretrainedConfig):
11
+ """Phi configuration."""
12
+
13
+ model_type = "phi-msft"
14
+ attribute_map = {
15
+ "max_position_embeddings": "n_positions",
16
+ "hidden_size": "n_embd",
17
+ "num_attention_heads": "n_head",
18
+ "num_hidden_layers": "n_layer",
19
+ }
20
+
21
+ def __init__(
22
+ self,
23
+ vocab_size: int = 50304,
24
+ n_positions: int = 2048,
25
+ n_embd: int = 1024,
26
+ n_layer: int = 20,
27
+ n_inner: Optional[int] = None,
28
+ n_head: int = 16,
29
+ n_head_kv: Optional[int] = None,
30
+ rotary_dim: Optional[int] = 32,
31
+ activation_function: Optional[str] = "gelu_new",
32
+ flash_attn: bool = False,
33
+ flash_rotary: bool = False,
34
+ fused_dense: bool = False,
35
+ attn_pdrop: float = 0.0,
36
+ embd_pdrop: float = 0.0,
37
+ resid_pdrop: float = 0.0,
38
+ layer_norm_epsilon: float = 1e-5,
39
+ initializer_range: float = 0.02,
40
+ tie_word_embeddings: bool = False,
41
+ pad_vocab_size_multiple: int = 64,
42
+ **kwargs
43
+ ) -> None:
44
+ self.vocab_size = int(math.ceil(vocab_size / pad_vocab_size_multiple) * pad_vocab_size_multiple)
45
+ self.n_positions = n_positions
46
+ self.n_embd = n_embd
47
+ self.n_layer = n_layer
48
+ self.n_inner = n_inner
49
+ self.n_head = n_head
50
+ self.n_head_kv = n_head_kv
51
+ self.rotary_dim = min(rotary_dim, n_embd // n_head)
52
+ self.activation_function = activation_function
53
+ self.flash_attn = flash_attn
54
+ self.flash_rotary = flash_rotary
55
+ self.fused_dense = fused_dense
56
+ self.attn_pdrop = attn_pdrop
57
+ self.embd_pdrop = embd_pdrop
58
+ self.resid_pdrop = resid_pdrop
59
+ self.layer_norm_epsilon = layer_norm_epsilon
60
+ self.initializer_range = initializer_range
61
+
62
+ super().__init__(tie_word_embeddings=tie_word_embeddings, **kwargs)
generation_config.json ADDED
@@ -0,0 +1,4 @@
 
 
 
 
 
1
+ {
2
+ "_from_model_config": true,
3
+ "transformers_version": "4.40.0"
4
+ }
merges.txt ADDED
The diff for this file is too large to render. See raw diff
 
model.safetensors ADDED
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+ version https://git-lfs.github.com/spec/v1
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+ oid sha256:40532af2099f9fae7d04cda8a9cedb884b9c53c254910d0a121af37762c73530
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+ size 1941878416
modeling_phi.py ADDED
@@ -0,0 +1,967 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # Copyright (c) Microsoft Corporation.
2
+ # Licensed under the MIT license.
3
+ #
4
+ # Copyright (c) 2022, Tri Dao, [email protected].
5
+ # Licensed under the BSD 3-Clause License.
6
+
7
+ from __future__ import annotations
8
+
9
+ import math
10
+ from dataclasses import dataclass, field
11
+ from typing import Any, Dict, Optional, Tuple, Union
12
+
13
+ import torch
14
+ import torch.nn as nn
15
+ from einops import rearrange, repeat
16
+ from transformers import PretrainedConfig, PreTrainedModel
17
+ from transformers.activations import ACT2FN
18
+ from transformers.modeling_outputs import CausalLMOutputWithPast
19
+
20
+ from .configuration_phi import PhiConfig
21
+
22
+ try:
23
+ from flash_attn.bert_padding import pad_input, unpad_input
24
+ from flash_attn.layers.rotary import RotaryEmbedding as FlashRotaryEmbedding
25
+ from flash_attn.modules.mha import FlashCrossAttention, FlashSelfAttention
26
+ from flash_attn.ops.fused_dense import FusedDense
27
+ except:
28
+ pad_input, unpad_input = None, None
29
+ FlashRotaryEmbedding = None
30
+ FlashSelfAttention, FlashCrossAttention = None, None
31
+ FusedDense = None
32
+
33
+
34
+ @dataclass
35
+ class InferenceParams:
36
+ """Inference parameters passed to model to efficiently calculate
37
+ and store context during inference.
38
+
39
+ Reference:
40
+ https://github.com/Dao-AILab/flash-attention/blob/main/flash_attn/utils/generation.py.
41
+
42
+ Args:
43
+ max_seqlen: Maximum sequence length.
44
+ max_batch_size: Maximum batch size.
45
+ seqlen_offset: Sequence length offset.
46
+ batch_size_offset: Batch size offset.
47
+ key_value_memory_dict: Key value memory dictionary.
48
+ lengths_per_sample: Lengths per sample.
49
+
50
+ """
51
+
52
+ max_seqlen: int = field(metadata={"help": "Maximum sequence length."})
53
+
54
+ max_batch_size: int = field(metadata={"help": "Maximum batch size."})
55
+
56
+ seqlen_offset: int = field(default=0, metadata={"help": "Sequence length offset."})
57
+
58
+ batch_size_offset: int = field(default=0, metadata={"help": "Batch size offset."})
59
+
60
+ key_value_memory_dict: Dict[str, Any] = field(
61
+ default_factory=dict, metadata={"help": "Key value memory dictionary."}
62
+ )
63
+
64
+ lengths_per_sample: torch.Tensor = field(default=None, metadata={"help": "Lengths per sample."})
65
+
66
+
67
+ class Embedding(nn.Module):
68
+ """Token embedding with dropout."""
69
+
70
+ def __init__(self, config: PretrainedConfig) -> None:
71
+ super().__init__()
72
+
73
+ self.wte = nn.Embedding(config.vocab_size, config.n_embd)
74
+ self.drop = nn.Dropout(config.embd_pdrop)
75
+
76
+ def forward(self, input_ids: torch.LongTensor) -> torch.FloatTensor:
77
+ input_shape = input_ids.size()
78
+ input_ids = input_ids.view(-1, input_shape[-1])
79
+
80
+ hidden_states = self.wte(input_ids)
81
+ hidden_states = self.drop(hidden_states)
82
+
83
+ return hidden_states
84
+
85
+
86
+ def _apply_rotary_emb(
87
+ x: torch.FloatTensor,
88
+ cos: torch.FloatTensor,
89
+ sin: torch.FloatTensor,
90
+ ) -> torch.FloatTensor:
91
+ _, seqlen, _, _ = x.shape
92
+ _, rotary_dim = cos.shape
93
+ rotary_dim *= 2
94
+
95
+ x_rot = x[:, :, :, :rotary_dim]
96
+ x_pass = x[:, :, :, rotary_dim:]
97
+
98
+ x1, x2 = x_rot.chunk(2, dim=-1)
99
+ c, s = rearrange(cos[:seqlen], "s d -> s 1 d"), rearrange(sin[:seqlen], "s d -> s 1 d")
100
+ x1, x2, c, s = [t.to(dtype=torch.float32) for t in [x1, x2, c, s]]
101
+
102
+ x_rot = torch.cat([x1 * c - x2 * s, x1 * s + x2 * c], axis=-1).to(x.dtype)
103
+
104
+ return torch.cat([x_rot, x_pass], axis=-1)
105
+
106
+
107
+ def _apply_rotary_emb_kv(
108
+ kv: torch.FloatTensor,
109
+ cos: torch.FloatTensor,
110
+ sin: torch.FloatTensor,
111
+ cos_k: Optional[torch.FloatTensor] = None,
112
+ sin_k: Optional[torch.FloatTensor] = None,
113
+ ) -> torch.FloatTensor:
114
+ _, seqlen, _, _, _ = kv.shape
115
+ _, rotary_dim = cos.shape
116
+ rotary_dim *= 2
117
+
118
+ k_rot = kv[:, :, 0, :, :rotary_dim]
119
+ k_pass = kv[:, :, 0, :, rotary_dim:]
120
+
121
+ k1, k2 = k_rot.chunk(2, dim=-1)
122
+ c, s = rearrange(cos[:seqlen], "s d -> s 1 d"), rearrange(sin[:seqlen], "s d -> s 1 d")
123
+ k1, k2, c, s = [t.to(dtype=torch.float32) for t in [k1, k2, c, s]]
124
+
125
+ k_rot = torch.cat([k1 * c - k2 * s, k1 * s + k2 * c], axis=-1).to(kv.dtype)
126
+
127
+ return torch.cat(
128
+ [
129
+ torch.cat([k_rot, k_pass], axis=-1).unsqueeze(2),
130
+ kv[:, :, 1:2, :, :],
131
+ ],
132
+ axis=2,
133
+ )
134
+
135
+
136
+ def _apply_rotary_emb_qkv(
137
+ qkv: torch.FloatTensor,
138
+ cos: torch.FloatTensor,
139
+ sin: torch.FloatTensor,
140
+ cos_k: Optional[torch.FloatTensor] = None,
141
+ sin_k: Optional[torch.FloatTensor] = None,
142
+ ) -> torch.FloatTensor:
143
+ _, seqlen, _, _, _ = qkv.shape
144
+ _, rotary_dim = cos.shape
145
+ rotary_dim *= 2
146
+
147
+ q_rot = qkv[:, :, 0, :, :rotary_dim]
148
+ q_pass = qkv[:, :, 0, :, rotary_dim:]
149
+
150
+ k_rot = qkv[:, :, 1, :, :rotary_dim]
151
+ k_pass = qkv[:, :, 1, :, rotary_dim:]
152
+
153
+ q1, q2 = q_rot.chunk(2, dim=-1)
154
+ k1, k2 = k_rot.chunk(2, dim=-1)
155
+ c, s = rearrange(cos[:seqlen], "s d -> s 1 d"), rearrange(sin[:seqlen], "s d -> s 1 d")
156
+ q1, q2, k1, k2, c, s = [t.to(dtype=torch.float32) for t in [q1, q2, k1, k2, c, s]]
157
+
158
+ q_rot = torch.cat([q1 * c - q2 * s, q1 * s + q2 * c], axis=-1).to(qkv.dtype)
159
+ k_rot = torch.cat([k1 * c - k2 * s, k1 * s + k2 * c], axis=-1).to(qkv.dtype)
160
+
161
+ return torch.cat(
162
+ [
163
+ torch.cat([q_rot, q_pass], axis=-1).unsqueeze(2),
164
+ torch.cat([k_rot, k_pass], axis=-1).unsqueeze(2),
165
+ qkv[:, :, 2:3, :, :],
166
+ ],
167
+ axis=2,
168
+ )
169
+
170
+
171
+ class RotaryEmbedding(nn.Module):
172
+ """Rotary positional embedding (RoPE).
173
+
174
+ Reference:
175
+ RoFormer: Enhanced Transformer with Rotary Position Embedding.
176
+ https://arxiv.org/pdf/2104.09864.pdf.
177
+
178
+ """
179
+
180
+ def __init__(
181
+ self,
182
+ dim: int,
183
+ base: int = 10000,
184
+ scale_base: Optional[float] = None,
185
+ pos_idx_in_fp32: bool = True,
186
+ max_position_embeddings: int = 2048,
187
+ device: Optional[str] = None,
188
+ **kwargs,
189
+ ) -> None:
190
+ super().__init__()
191
+
192
+ if scale_base is not None:
193
+ raise NotImplementedError
194
+
195
+ self.dim = dim
196
+ self.base = float(base)
197
+ self.scale_base = scale_base
198
+ self.pos_idx_in_fp32 = pos_idx_in_fp32
199
+ self.max_position_embeddings = max_position_embeddings
200
+ self.device = device
201
+
202
+ # Generate and save the inverse frequency buffer (non-trainable)
203
+ inv_freq = self._compute_inv_freq(device)
204
+ self.register_buffer("inv_freq", inv_freq, persistent=False)
205
+
206
+ # Generate and save the scale buffer (non-trainable)
207
+ scale = (
208
+ (torch.arange(0, dim, 2, device=device, dtype=torch.float32) + 0.4 * dim) / (1.4 * dim)
209
+ if scale_base is not None
210
+ else None
211
+ )
212
+ self.register_buffer("scale", scale, persistent=False)
213
+
214
+ # Initialize cached attributes since ONNX can't rely on dynamic initialization
215
+ self._update_cos_sin_cache(max_position_embeddings, device=device, dtype=torch.float32)
216
+
217
+ def _compute_inv_freq(self, device: Optional[str] = None) -> torch.FloatTensor:
218
+ return 1.0 / (self.base ** (torch.arange(0, self.dim, 2, device=device, dtype=torch.float32) / self.dim))
219
+
220
+ def _update_cos_sin_cache(
221
+ self,
222
+ seqlen: int,
223
+ device: Optional[str] = None,
224
+ dtype: Optional[torch.dtype] = None,
225
+ ) -> None:
226
+ self._seq_len_cached = seqlen
227
+
228
+ # fp32 is preferred since the output of `torch.arange` can be quite large
229
+ # and bf16 would lose a lot of precision
230
+ if self.pos_idx_in_fp32:
231
+ t = torch.arange(seqlen, device=device, dtype=torch.float32)
232
+ if self.inv_freq.dtype != torch.float32:
233
+ inv_freq = self._compute_inv_freq(device=device)
234
+ else:
235
+ inv_freq = self.inv_freq
236
+ else:
237
+ t = torch.arange(seqlen, device=device, dtype=self.inv_freq.dtype)
238
+ inv_freq = self.inv_freq
239
+
240
+ # `torch.outer` is preferred since `torch.einsum` converts from fp32 to fp16 if used with AMP
241
+ freqs = torch.outer(t, inv_freq)
242
+ if self.scale is None:
243
+ self._cos_cached = torch.cos(freqs).to(dtype)
244
+ self._sin_cached = torch.sin(freqs).to(dtype)
245
+ else:
246
+ power = (
247
+ torch.arange(seqlen, dtype=self.scale.dtype, device=self.scale.device) - seqlen // 2
248
+ ) / self.scale_base
249
+ scale = self.scale.to(device=power.device) ** rearrange(power, "s -> s 1")
250
+
251
+ # Force the scale multiplication to happen in fp32
252
+ self._cos_cached = (torch.cos(freqs) * scale).to(dtype)
253
+ self._sin_cached = (torch.sin(freqs) * scale).to(dtype)
254
+ self._cos_k_cached = (torch.cos(freqs) / scale).to(dtype)
255
+ self._sin_k_cached = (torch.sin(freqs) / scale).to(dtype)
256
+
257
+ def forward(
258
+ self,
259
+ qkv: torch.Tensor,
260
+ kv: Optional[torch.Tensor] = None,
261
+ seqlen_offset: int = 0,
262
+ **kwargs,
263
+ ) -> Tuple[torch.Tensor, torch.Tensor]:
264
+ if (
265
+ self._seq_len_cached < qkv.shape[1] + seqlen_offset
266
+ or self._cos_cached.device != qkv.device
267
+ or self._cos_cached.dtype != qkv.dtype
268
+ or (self.training and self._cos_cached.is_inference())
269
+ ):
270
+ self._update_cos_sin_cache(qkv.shape[1] + seqlen_offset, device=qkv.device, dtype=qkv.dtype)
271
+
272
+ if kv is None:
273
+ return _apply_rotary_emb_qkv(
274
+ qkv,
275
+ self._cos_cached[seqlen_offset:],
276
+ self._sin_cached[seqlen_offset:],
277
+ )
278
+ else:
279
+ q = _apply_rotary_emb(
280
+ qkv,
281
+ self._cos_cached[seqlen_offset:],
282
+ self._sin_cached[seqlen_offset:],
283
+ )
284
+ kv = _apply_rotary_emb_kv(
285
+ kv,
286
+ self._cos_cached[seqlen_offset:],
287
+ self._sin_cached[seqlen_offset:],
288
+ )
289
+
290
+ return q, kv
291
+
292
+
293
+ class MLP(nn.Module):
294
+ """Multi-Layer Perceptron.
295
+
296
+ Reference:
297
+ Attention Is All You Need.
298
+ https://arxiv.org/pdf/1706.03762.pdf.
299
+
300
+ """
301
+
302
+ def __init__(
303
+ self,
304
+ config: PretrainedConfig,
305
+ n_inner: Optional[int] = None,
306
+ act_fn: Optional[str] = None,
307
+ ) -> None:
308
+ super().__init__()
309
+
310
+ act_fn = config.activation_function if act_fn is None else act_fn
311
+
312
+ n_inner = getattr(config, "n_inner", None) if n_inner is None else n_inner
313
+ n_inner = n_inner if n_inner is not None else 4 * config.n_embd
314
+
315
+ self.fc1 = nn.Linear(config.n_embd, n_inner)
316
+ self.fc2 = nn.Linear(n_inner, config.n_embd)
317
+ self.act = ACT2FN[act_fn]
318
+
319
+ def forward(self, hidden_states: torch.FloatTensor) -> torch.FloatTensor:
320
+ hidden_states = self.fc1(hidden_states)
321
+ hidden_states = self.act(hidden_states)
322
+ hidden_states = self.fc2(hidden_states)
323
+
324
+ return hidden_states
325
+
326
+
327
+ class SelfAttention(nn.Module):
328
+ """Self-attention layer (compatible with PyTorch).
329
+
330
+ Reference:
331
+ https://github.com/Dao-AILab/flash-attention/blob/main/flash_attn/modules/mha.py.
332
+
333
+ """
334
+
335
+ def __init__(
336
+ self,
337
+ causal: bool = True,
338
+ softmax_scale: Optional[float] = None,
339
+ attention_dropout: float = 0.0,
340
+ ) -> None:
341
+ super().__init__()
342
+
343
+ self.causal = causal
344
+ self.softmax_scale = softmax_scale
345
+ self.drop = nn.Dropout(attention_dropout)
346
+
347
+ @torch.autocast("cpu", enabled=False)
348
+ @torch.autocast("cuda", enabled=False)
349
+ def forward(
350
+ self,
351
+ qkv: torch.FloatTensor,
352
+ causal: bool = None,
353
+ key_padding_mask: Optional[torch.BoolTensor] = None,
354
+ **kwargs,
355
+ ) -> torch.FloatTensor:
356
+ batch_size, seqlen = qkv.shape[0], qkv.shape[1]
357
+ q, k, v = qkv.unbind(dim=2)
358
+
359
+ q = q.to(torch.float32)
360
+ k = k.to(torch.float32)
361
+
362
+ causal = self.causal if causal is None else causal
363
+ softmax_scale = self.softmax_scale or 1.0 / math.sqrt(q.shape[-1])
364
+
365
+ # Autocast is manually disabled to avoid `torch.einsum` performing the operation
366
+ # using float16, which might lead to overflow
367
+ scores = torch.einsum("bthd,bshd->bhts", q, k * softmax_scale)
368
+
369
+ if key_padding_mask is not None:
370
+ padding_mask = torch.full((batch_size, seqlen), -10000.0, dtype=scores.dtype, device=scores.device)
371
+ padding_mask.masked_fill_(key_padding_mask, 0.0)
372
+
373
+ scores = scores + rearrange(padding_mask, "b s -> b 1 1 s")
374
+
375
+ if causal:
376
+ causal_mask = torch.triu(torch.full((seqlen, seqlen), -10000.0, device=scores.device), 1)
377
+ scores = scores + causal_mask.to(dtype=scores.dtype)
378
+
379
+ attention = torch.softmax(scores, dim=-1).to(v.dtype)
380
+ attention = self.drop(attention)
381
+
382
+ output = torch.einsum("bhts,bshd->bthd", attention, v)
383
+
384
+ return output
385
+
386
+
387
+ class CrossAttention(nn.Module):
388
+ """Cross-attention layer (compatible with PyTorch).
389
+
390
+ Reference:
391
+ https://github.com/Dao-AILab/flash-attention/blob/main/flash_attn/modules/mha.py.
392
+
393
+ """
394
+
395
+ def __init__(
396
+ self,
397
+ causal: bool = True,
398
+ softmax_scale: Optional[float] = None,
399
+ attention_dropout: float = 0.0,
400
+ ) -> None:
401
+ super().__init__()
402
+
403
+ self.causal = causal
404
+ self.softmax_scale = softmax_scale
405
+ self.drop = nn.Dropout(attention_dropout)
406
+
407
+ @torch.autocast("cpu", enabled=False)
408
+ @torch.autocast("cuda", enabled=False)
409
+ def forward(
410
+ self,
411
+ q: torch.FloatTensor,
412
+ kv: torch.FloatTensor,
413
+ causal: bool = None,
414
+ key_padding_mask: Optional[torch.BoolTensor] = None,
415
+ **kwargs,
416
+ ) -> torch.FloatTensor:
417
+ batch_size, seqlen_q = q.shape[0], q.shape[1]
418
+ seqlen_k = kv.shape[1]
419
+
420
+ if kv.shape[3] != q.shape[2]:
421
+ kv = repeat(kv, "... hkv d -> ... (hkv g) d", g=q.shape[2] // kv.shape[3])
422
+ k, v = kv.unbind(dim=2)
423
+
424
+ q = q.to(torch.float32)
425
+ k = k.to(torch.float32)
426
+
427
+ causal = self.causal if causal is None else causal
428
+ softmax_scale = self.softmax_scale or 1.0 / math.sqrt(q.shape[-1])
429
+
430
+ # Autocast is manually disabled to avoid `torch.einsum` performing the operation
431
+ # using float16, which might lead to overflow
432
+ scores = torch.einsum("bthd,bshd->bhts", q, k * softmax_scale)
433
+
434
+ if key_padding_mask is not None:
435
+ padding_mask = torch.full(
436
+ (batch_size, seqlen_k),
437
+ -10000.0,
438
+ dtype=scores.dtype,
439
+ device=scores.device,
440
+ )
441
+ padding_mask.masked_fill_(key_padding_mask, 0.0)
442
+
443
+ scores = scores + rearrange(padding_mask, "b s -> b 1 1 s")
444
+
445
+ if causal:
446
+ rows = rearrange(torch.arange(seqlen_q, device=q.device, dtype=torch.long), "s -> s 1")
447
+ cols = torch.arange(seqlen_k, device=k.device, dtype=torch.long)
448
+ causal_mask = cols > rows + seqlen_k - seqlen_q
449
+
450
+ scores = scores.masked_fill(causal_mask, -10000.0)
451
+
452
+ attention = torch.softmax(scores, dim=-1).to(v.dtype)
453
+ attention = self.drop(attention)
454
+
455
+ output = torch.einsum("bhts,bshd->bthd", attention, v)
456
+
457
+ return output
458
+
459
+
460
+ def _find_mha_dims(
461
+ config: PretrainedConfig,
462
+ n_head: Optional[int] = None,
463
+ n_head_kv: Optional[int] = None,
464
+ head_dim: Optional[int] = None,
465
+ ) -> Tuple[int, int]:
466
+ if n_head is None and head_dim is None:
467
+ head_dim = config.n_embd // config.n_head
468
+ n_head = config.n_head
469
+ elif n_head is None or head_dim is None:
470
+ raise ValueError("`n_head` and `head_dim` must be both specified or `None`.")
471
+
472
+ if n_head_kv is None:
473
+ n_head_kv = getattr(config, "n_head_kv", None) or n_head
474
+
475
+ return n_head, n_head_kv, head_dim
476
+
477
+
478
+ def _update_kv_cache(kv: torch.FloatTensor, inference_params: InferenceParams, layer_idx: int) -> torch.FloatTensor:
479
+ num_heads, head_dim = kv.shape[-2:]
480
+
481
+ if layer_idx not in inference_params.key_value_memory_dict:
482
+ inference_params.key_value_memory_dict[layer_idx] = torch.empty(
483
+ inference_params.max_batch_size,
484
+ inference_params.max_seqlen,
485
+ 2,
486
+ num_heads,
487
+ head_dim,
488
+ dtype=kv.dtype,
489
+ device=kv.device,
490
+ )
491
+
492
+ batch_start = inference_params.batch_size_offset
493
+ batch_end = batch_start + kv.shape[0]
494
+
495
+ sequence_start = inference_params.seqlen_offset
496
+ sequence_end = sequence_start + kv.shape[1]
497
+
498
+ # When the current sequence length is equal to or larger than the maximum sequence length,
499
+ # we need to concatenate the current `kv` with the cached `kv` to expand its length
500
+ if sequence_end >= inference_params.max_seqlen:
501
+ inference_params.key_value_memory_dict[layer_idx] = torch.concatenate((inference_params.key_value_memory_dict[layer_idx], kv), dim=1)
502
+
503
+ inference_params.key_value_memory_dict[layer_idx][batch_start:batch_end, sequence_start:sequence_end, ...] = kv
504
+ kv = inference_params.key_value_memory_dict[layer_idx][batch_start:batch_end, :sequence_end, ...]
505
+
506
+ return kv
507
+
508
+
509
+ class MHA(nn.Module):
510
+ """Multi-head attention layer."""
511
+
512
+ def __init__(
513
+ self,
514
+ config: PretrainedConfig,
515
+ dtype: Optional[torch.dtype] = None,
516
+ device: Optional[str] = None,
517
+ rotary_dim: Optional[int] = None,
518
+ rotary_base: float = 10000.0,
519
+ rotary_scale_base: Optional[float] = None,
520
+ n_head: Optional[int] = None,
521
+ n_head_kv: Optional[int] = None,
522
+ head_dim: Optional[int] = None,
523
+ bias: bool = True,
524
+ causal: bool = True,
525
+ softmax_scale: Optional[float] = None,
526
+ layer_idx: Optional[int] = None,
527
+ return_residual: bool = False,
528
+ checkpointing: bool = False,
529
+ ) -> None:
530
+ super().__init__()
531
+
532
+ # Rotary embedding
533
+ self.rotary_dim = rotary_dim if rotary_dim is not None else getattr(config, "rotary_dim", 0)
534
+ if self.rotary_dim > 0:
535
+ rotary_cls = FlashRotaryEmbedding if config.flash_rotary else RotaryEmbedding
536
+ if rotary_cls is None:
537
+ rotary_cls = RotaryEmbedding
538
+
539
+ rotary_kwargs = {}
540
+ if rotary_cls is RotaryEmbedding:
541
+ rotary_kwargs["max_position_embeddings"] = config.n_positions
542
+
543
+ self.rotary_emb = rotary_cls(
544
+ self.rotary_dim,
545
+ base=rotary_base,
546
+ scale_base=rotary_scale_base,
547
+ device=device,
548
+ **rotary_kwargs,
549
+ )
550
+
551
+ # MLP
552
+ self.n_head, self.n_head_kv, self.head_dim = _find_mha_dims(
553
+ config, n_head=n_head, n_head_kv=n_head_kv, head_dim=head_dim
554
+ )
555
+ op_size = self.head_dim * (self.n_head + 2 * self.n_head_kv)
556
+ hidden_size = config.n_embd
557
+
558
+ linear_cls = FusedDense if config.fused_dense else nn.Linear
559
+ if linear_cls is None:
560
+ linear_cls = nn.Linear
561
+
562
+ self.Wqkv = linear_cls(hidden_size, op_size, bias=bias, device=device, dtype=dtype)
563
+ self.out_proj = linear_cls(hidden_size, hidden_size, bias=bias, device=device, dtype=dtype)
564
+
565
+ # Attention
566
+ attn_cls = FlashSelfAttention if config.flash_attn else SelfAttention
567
+ if attn_cls is None:
568
+ attn_cls = SelfAttention
569
+
570
+ cross_attn_cls = FlashCrossAttention if config.flash_attn else CrossAttention
571
+ if cross_attn_cls is None:
572
+ cross_attn_cls = CrossAttention
573
+
574
+ self.inner_attn = attn_cls(
575
+ causal=causal,
576
+ softmax_scale=softmax_scale,
577
+ attention_dropout=config.attn_pdrop,
578
+ )
579
+ self.inner_cross_attn = cross_attn_cls(
580
+ causal=causal,
581
+ softmax_scale=softmax_scale,
582
+ attention_dropout=config.attn_pdrop,
583
+ )
584
+
585
+ self.flash_attn = config.flash_attn and attn_cls is FlashSelfAttention
586
+ self.layer_idx = layer_idx
587
+ self.return_residual = return_residual
588
+ self.checkpointing = checkpointing
589
+
590
+ def _forward_self_attn(
591
+ self, x: torch.FloatTensor, key_padding_mask: Optional[torch.BoolTensor]
592
+ ) -> torch.FloatTensor:
593
+ qkv = self.Wqkv(x)
594
+ qkv = rearrange(qkv, "... (three h d) -> ... three h d", three=3, d=self.head_dim)
595
+
596
+ if self.rotary_dim > 0:
597
+ qkv = self.rotary_emb(qkv)
598
+
599
+ if self.flash_attn:
600
+ batch_size, seqlen = qkv.shape[0], qkv.shape[1]
601
+
602
+ cu_seqlens, max_seqlen = None, None
603
+ if key_padding_mask is not None:
604
+ # If `key_padding_mask` is supplied, we need to unpad the input and retrieve
605
+ # the `cu_seqlens` and `max_seqlen` to be used by `flash-attn`
606
+ qkv, indices, cu_seqlens, max_seqlen = unpad_input(qkv, key_padding_mask)
607
+
608
+ if self.checkpointing and self.training:
609
+ attn_output = torch.utils.checkpoint.checkpoint(
610
+ self.inner_attn, qkv, cu_seqlens=cu_seqlens, max_seqlen=max_seqlen
611
+ )
612
+ else:
613
+ attn_output = self.inner_attn(qkv, cu_seqlens=cu_seqlens, max_seqlen=max_seqlen).to(qkv.device)
614
+
615
+ # If `key_padding_mask` is supplied, we need to pad the output back to the original shape
616
+ return pad_input(attn_output, indices, batch_size, seqlen) if key_padding_mask is not None else attn_output
617
+
618
+ if self.checkpointing and self.training:
619
+ return torch.utils.checkpoint.checkpoint(self.inner_attn, qkv, key_padding_mask=key_padding_mask, use_reentrant=False)
620
+
621
+ return self.inner_attn(qkv, key_padding_mask=key_padding_mask)
622
+
623
+ def _forward_cross_attn(
624
+ self,
625
+ x: torch.FloatTensor,
626
+ past_key_values: Optional[InferenceParams],
627
+ key_padding_mask: Optional[torch.BoolTensor],
628
+ ) -> torch.FloatTensor:
629
+ batch_size = x.shape[0]
630
+
631
+ qkv = self.Wqkv(x)
632
+
633
+ q = qkv[..., : self.n_head * self.head_dim]
634
+ q = rearrange(q, "... (h d) -> ... h d", d=self.head_dim)
635
+
636
+ kv = qkv[..., self.n_head * self.head_dim :]
637
+ kv = rearrange(kv, "... (two hkv d) -> ... two hkv d", two=2, d=self.head_dim)
638
+
639
+ seqlen_offset = past_key_values.seqlen_offset if past_key_values is not None else 0
640
+ causal = None if seqlen_offset == 0 else False
641
+ if self.rotary_dim > 0:
642
+ q, kv = self.rotary_emb(q, kv=kv, seqlen_offset=seqlen_offset)
643
+
644
+ if past_key_values is not None:
645
+ kv = _update_kv_cache(kv, past_key_values, self.layer_idx)
646
+
647
+ if self.flash_attn:
648
+ batch_size, seqlen_q = q.shape[0], q.shape[1]
649
+ seqlen_k = kv.shape[1]
650
+
651
+ cu_seqlens_q, cu_seqlens_k, max_seqlen_q, max_seqlen_k = (
652
+ None,
653
+ None,
654
+ None,
655
+ None,
656
+ )
657
+ if key_padding_mask is not None:
658
+ kv, _, cu_seqlens_k, max_seqlen_k = unpad_input(kv, key_padding_mask)
659
+
660
+ if seqlen_q == 1:
661
+ key_padding_mask = torch.ones(batch_size, 1, device=q.device)
662
+ elif seqlen_q != seqlen_k:
663
+ key_padding_mask = key_padding_mask[:, -seqlen_q:]
664
+
665
+ q, indices_q, cu_seqlens_q, max_seqlen_q = unpad_input(q, key_padding_mask)
666
+
667
+ if self.checkpointing and self.training:
668
+ attn_output = torch.utils.checkpoint.checkpoint(
669
+ self.inner_cross_attn,
670
+ q,
671
+ kv,
672
+ causal=causal,
673
+ cu_seqlens=cu_seqlens_q,
674
+ max_seqlen=max_seqlen_q,
675
+ cu_seqlens_k=cu_seqlens_k,
676
+ max_seqlen_k=max_seqlen_k,
677
+ use_reentrant=False
678
+ )
679
+ else:
680
+ attn_output = self.inner_cross_attn(
681
+ q,
682
+ kv,
683
+ causal=causal,
684
+ cu_seqlens=cu_seqlens_q,
685
+ max_seqlen=max_seqlen_q,
686
+ cu_seqlens_k=cu_seqlens_k,
687
+ max_seqlen_k=max_seqlen_k,
688
+ )
689
+
690
+ return (
691
+ pad_input(attn_output, indices_q, batch_size, max_seqlen_q)
692
+ if key_padding_mask is not None
693
+ else attn_output
694
+ )
695
+
696
+ if self.checkpointing and self.training:
697
+ return torch.utils.checkpoint.checkpoint(
698
+ self.inner_cross_attn,
699
+ q,
700
+ kv,
701
+ key_padding_mask=key_padding_mask,
702
+ causal=causal,
703
+ use_reentrant=False
704
+ )
705
+
706
+ return self.inner_cross_attn(q, kv, key_padding_mask=key_padding_mask, causal=causal)
707
+
708
+ def forward(
709
+ self,
710
+ x: torch.FloatTensor,
711
+ past_key_values: Optional[InferenceParams] = None,
712
+ attention_mask: Optional[Union[torch.LongTensor, torch.BoolTensor]] = None,
713
+ **kwargs,
714
+ ) -> Tuple[torch.FloatTensor, torch.FloatTensor]:
715
+ if attention_mask is not None:
716
+ attention_mask = attention_mask.bool()
717
+ else:
718
+ attention_mask = None
719
+
720
+ # MHA
721
+ if self.n_head == self.n_head_kv:
722
+ if past_key_values is None:
723
+ # If `past_key_values` are not supplied, we run self-attention
724
+ attn_output = self._forward_self_attn(x, attention_mask)
725
+ else:
726
+ # If `past_key_values` are supplied, it means that we might have cached values and
727
+ # could take advantage of cross-attention
728
+ attn_output = self._forward_cross_attn(x, past_key_values, attention_mask)
729
+ # MQA / GQA
730
+ else:
731
+ # Regardless of `past_key_values` being supplied or not, it always use cross-attention
732
+ # because `q` and `kv` lengths might be different
733
+ attn_output = self._forward_cross_attn(x, past_key_values, attention_mask)
734
+
735
+ output = rearrange(attn_output, "... h d -> ... (h d)")
736
+ output = self.out_proj(output)
737
+
738
+ return output if not self.return_residual else (output, x)
739
+
740
+
741
+ class ParallelBlock(nn.Module):
742
+ """Parallel block.
743
+
744
+ This block applies parallel mixer and MLP layers to the input (used in GPT-J and CodeGen).
745
+
746
+ """
747
+
748
+ def __init__(
749
+ self,
750
+ config: PretrainedConfig,
751
+ block_idx: Optional[int] = None,
752
+ ) -> None:
753
+ super().__init__()
754
+
755
+ self.ln = nn.LayerNorm(config.n_embd, eps=config.layer_norm_epsilon)
756
+ self.resid_dropout = nn.Dropout(config.resid_pdrop)
757
+ self.block_idx = block_idx
758
+
759
+ self.mixer = MHA(config, layer_idx=block_idx)
760
+ self.mlp = MLP(config)
761
+
762
+ def forward(
763
+ self,
764
+ hidden_states: torch.FloatTensor,
765
+ past_key_values: Optional[Union[torch.FloatTensor, InferenceParams]] = None,
766
+ attention_mask: Optional[torch.BoolTensor] = None,
767
+ **kwargs,
768
+ ) -> torch.FloatTensor:
769
+ residual = hidden_states
770
+ hidden_states = self.ln(hidden_states)
771
+
772
+ attn_outputs = self.mixer(
773
+ hidden_states,
774
+ past_key_values=past_key_values,
775
+ attention_mask=attention_mask,
776
+ )
777
+ if isinstance(attn_outputs, tuple):
778
+ attn_outputs = attn_outputs[0]
779
+
780
+ attn_outputs = self.resid_dropout(attn_outputs)
781
+ feed_forward_hidden_states = self.resid_dropout(self.mlp(hidden_states))
782
+
783
+ hidden_states = attn_outputs + feed_forward_hidden_states + residual
784
+
785
+ return hidden_states
786
+
787
+
788
+ class CausalLMHead(nn.Module):
789
+ """Causal Language Modeling head.
790
+
791
+ Reference:
792
+ Improving Language Understanding by Generative Pre-Training.
793
+ https://cdn.openai.com/research-covers/language-unsupervised/language_understanding_paper.pdf.
794
+
795
+ """
796
+
797
+ def __init__(self, config: PretrainedConfig) -> None:
798
+ super().__init__()
799
+
800
+ self.ln = nn.LayerNorm(config.n_embd, eps=config.layer_norm_epsilon)
801
+ self.linear = nn.Linear(config.n_embd, config.vocab_size)
802
+
803
+ def forward(self, hidden_states: torch.FloatTensor) -> torch.FloatTensor:
804
+ hidden_states = self.ln(hidden_states)
805
+ logits = self.linear(hidden_states).to(torch.float32)
806
+
807
+ return logits
808
+
809
+
810
+ class CausalLMLoss(nn.Module):
811
+ """Causal Language Modeling loss.
812
+
813
+ Reference:
814
+ Improving Language Understanding by Generative Pre-Training.
815
+ https://cdn.openai.com/research-covers/language-unsupervised/language_understanding_paper.pdf.
816
+
817
+ """
818
+
819
+ def __init__(self, shift_labels: bool = True) -> None:
820
+ super().__init__()
821
+
822
+ self.shift_labels = shift_labels
823
+ self.loss_fct = nn.CrossEntropyLoss()
824
+
825
+ def forward(self, logits: torch.FloatTensor, labels: torch.LongTensor) -> torch.FloatTensor:
826
+ if self.shift_labels:
827
+ logits = logits[..., :-1, :].contiguous()
828
+ labels = labels[..., 1:].contiguous()
829
+
830
+ loss = self.loss_fct(logits.view(-1, logits.size(-1)), labels.view(-1))
831
+
832
+ return loss
833
+
834
+
835
+ class PhiPreTrainedModel(PreTrainedModel):
836
+ """Phi pre-trained model."""
837
+
838
+ config_class = PhiConfig
839
+ base_model_prefix = "transformer"
840
+ supports_gradient_checkpointing = True
841
+ _no_split_modules = ["ParallelBlock"]
842
+
843
+ def __init__(self, *inputs, **kwargs) -> None:
844
+ super().__init__(*inputs, **kwargs)
845
+
846
+ def _init_weights(self, module: nn.Module) -> None:
847
+ if isinstance(module, (nn.Linear,)):
848
+ module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
849
+ if module.bias is not None:
850
+ module.bias.data.zero_()
851
+ elif isinstance(module, nn.Embedding):
852
+ module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
853
+ if module.padding_idx is not None:
854
+ module.weight.data[module.padding_idx].zero_()
855
+ elif isinstance(module, nn.LayerNorm):
856
+ if module.bias is not None:
857
+ module.bias.data.zero_()
858
+ module.weight.data.fill_(1.0)
859
+
860
+
861
+ def _set_gradient_checkpointing(self, module, value=False):
862
+ if isinstance(module, MHA):
863
+ module.checkpointing = value
864
+
865
+ def prepare_inputs_for_generation(
866
+ self,
867
+ input_ids: torch.LongTensor,
868
+ past_key_values: Optional[Union[torch.FloatTensor, InferenceParams]] = None,
869
+ attention_mask: Optional[Union[torch.LongTensor, torch.BoolTensor]] = None,
870
+ **kwargs,
871
+ ) -> Dict[str, Any]:
872
+ if past_key_values is None or not (isinstance(past_key_values, InferenceParams)):
873
+ past_key_values = InferenceParams(
874
+ max_seqlen=self.config.n_positions,
875
+ max_batch_size=input_ids.shape[0],
876
+ seqlen_offset=0,
877
+ batch_size_offset=0,
878
+ key_value_memory_dict={},
879
+ lengths_per_sample=None,
880
+ )
881
+ else:
882
+ # Assume that `past_key_values` has cached all tokens up to the last token in `input_ids`
883
+ past_key_values.seqlen_offset = input_ids.shape[1] - 1
884
+ input_ids = input_ids[:, -1].unsqueeze(-1)
885
+
886
+ return {
887
+ "input_ids": input_ids,
888
+ "past_key_values": past_key_values,
889
+ "attention_mask": attention_mask,
890
+ }
891
+
892
+
893
+ class PhiModel(PhiPreTrainedModel):
894
+ """Phi model."""
895
+
896
+ _keys_to_ignore_on_load_missing = [""]
897
+ _keys_to_ignore_on_load_unexpected = [r"h\.\d+\.mlp.(fc_in|fc_out)\.(weight|bias)"]
898
+
899
+ def __init__(self, config: PhiConfig) -> None:
900
+ super().__init__(config)
901
+
902
+ self.embd = Embedding(config)
903
+ self.h = nn.ModuleList([ParallelBlock(config, block_idx=i) for i in range(config.n_layer)])
904
+ self.gradient_checkpointing = False
905
+ self.post_init()
906
+
907
+ def get_input_embeddings(self) -> nn.Embedding:
908
+ return self.embd.wte
909
+
910
+ def set_input_embeddings(self, new_embeddings: nn.Embedding) -> None:
911
+ self.embd.wte = new_embeddings
912
+
913
+ def forward(
914
+ self,
915
+ input_ids: torch.LongTensor,
916
+ past_key_values: Optional[Union[torch.FloatTensor, InferenceParams]] = None,
917
+ attention_mask: Optional[torch.BoolTensor] = None,
918
+ ) -> torch.FloatTensor:
919
+ hidden_states = self.embd(input_ids)
920
+
921
+ for layer in self.h:
922
+ hidden_states = layer(
923
+ hidden_states,
924
+ past_key_values=past_key_values,
925
+ attention_mask=attention_mask,
926
+ )
927
+
928
+ return hidden_states
929
+
930
+
931
+ class PhiForCausalLM(PhiPreTrainedModel):
932
+ """Phi for Causal Language Modeling."""
933
+
934
+ _keys_to_ignore_on_load_missing = [""]
935
+ _keys_to_ignore_on_load_unexpected = [r"transformer\.h\.\d+\.mlp.(fc_in|fc_out)\.(weight|bias)"]
936
+
937
+ def __init__(self, config: PhiConfig) -> None:
938
+ super().__init__(config)
939
+
940
+ self.transformer = PhiModel(config)
941
+ self.lm_head = CausalLMHead(config)
942
+ self.loss = CausalLMLoss()
943
+
944
+ self.post_init()
945
+
946
+ def get_output_embeddings(self) -> nn.Linear:
947
+ return self.lm_head.linear
948
+
949
+ def set_output_embeddings(self, new_embeddings: nn.Linear) -> None:
950
+ self.lm_head.linear = new_embeddings
951
+
952
+ def forward(
953
+ self,
954
+ input_ids: torch.LongTensor,
955
+ past_key_values: Optional[Union[torch.FloatTensor, InferenceParams]] = None,
956
+ attention_mask: Optional[torch.BoolTensor] = None,
957
+ labels: Optional[torch.LongTensor] = None,
958
+ **kwargs,
959
+ ) -> CausalLMOutputWithPast:
960
+ hidden_states = self.transformer(input_ids, past_key_values=past_key_values, attention_mask=attention_mask)
961
+ lm_logits = self.lm_head(hidden_states)
962
+
963
+ loss = None
964
+ if labels is not None:
965
+ loss = self.loss(lm_logits, labels)
966
+
967
+ return CausalLMOutputWithPast(loss=loss, logits=lm_logits, past_key_values=past_key_values)
smash_config.json ADDED
@@ -0,0 +1,31 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "api_key": null,
3
+ "verify_url": "http://johnrachwan.pythonanywhere.com",
4
+ "smash_config": {
5
+ "pruners": "None",
6
+ "pruning_ratio": 0.0,
7
+ "factorizers": "None",
8
+ "quantizers": "['llm-int8']",
9
+ "weight_quantization_bits": 4,
10
+ "output_deviation": 0.005,
11
+ "compilers": "None",
12
+ "static_batch": true,
13
+ "static_shape": true,
14
+ "controlnet": "None",
15
+ "unet_dim": 4,
16
+ "device": "cuda",
17
+ "cache_dir": "/ceph/hdd/staff/charpent/.cache/modelsl07ahlno",
18
+ "batch_size": 1,
19
+ "model_name": "cognitivecomputations/dolphin-2_6-phi-2",
20
+ "task": "text_text_generation",
21
+ "max_batch_size": 1,
22
+ "qtype_weight": "torch.qint8",
23
+ "qtype_activation": "torch.quint8",
24
+ "qobserver": "<class 'torch.ao.quantization.observer.MinMaxObserver'>",
25
+ "qscheme": "torch.per_tensor_symmetric",
26
+ "qconfig": "x86",
27
+ "group_size": 128,
28
+ "damp_percent": 0.1,
29
+ "save_load_fn": "bitsandbytes"
30
+ }
31
+ }
special_tokens_map.json ADDED
@@ -0,0 +1,30 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "bos_token": {
3
+ "content": "<|endoftext|>",
4
+ "lstrip": false,
5
+ "normalized": false,
6
+ "rstrip": false,
7
+ "single_word": false
8
+ },
9
+ "eos_token": {
10
+ "content": "<|im_end|>",
11
+ "lstrip": false,
12
+ "normalized": false,
13
+ "rstrip": false,
14
+ "single_word": false
15
+ },
16
+ "pad_token": {
17
+ "content": "<|endoftext|>",
18
+ "lstrip": false,
19
+ "normalized": false,
20
+ "rstrip": false,
21
+ "single_word": false
22
+ },
23
+ "unk_token": {
24
+ "content": "<|endoftext|>",
25
+ "lstrip": false,
26
+ "normalized": false,
27
+ "rstrip": false,
28
+ "single_word": false
29
+ }
30
+ }
tokenizer.json ADDED
The diff for this file is too large to render. See raw diff
 
tokenizer_config.json ADDED
@@ -0,0 +1,343 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "add_prefix_space": false,
3
+ "added_tokens_decoder": {
4
+ "50256": {
5
+ "content": "<|endoftext|>",
6
+ "lstrip": false,
7
+ "normalized": false,
8
+ "rstrip": false,
9
+ "single_word": false,
10
+ "special": true
11
+ },
12
+ "50257": {
13
+ "content": " ",
14
+ "lstrip": false,
15
+ "normalized": true,
16
+ "rstrip": false,
17
+ "single_word": false,
18
+ "special": false
19
+ },
20
+ "50258": {
21
+ "content": " ",
22
+ "lstrip": false,
23
+ "normalized": true,
24
+ "rstrip": false,
25
+ "single_word": false,
26
+ "special": false
27
+ },
28
+ "50259": {
29
+ "content": " ",
30
+ "lstrip": false,
31
+ "normalized": true,
32
+ "rstrip": false,
33
+ "single_word": false,
34
+ "special": false
35
+ },
36
+ "50260": {
37
+ "content": " ",
38
+ "lstrip": false,
39
+ "normalized": true,
40
+ "rstrip": false,
41
+ "single_word": false,
42
+ "special": false
43
+ },
44
+ "50261": {
45
+ "content": " ",
46
+ "lstrip": false,
47
+ "normalized": true,
48
+ "rstrip": false,
49
+ "single_word": false,
50
+ "special": false
51
+ },
52
+ "50262": {
53
+ "content": " ",
54
+ "lstrip": false,
55
+ "normalized": true,
56
+ "rstrip": false,
57
+ "single_word": false,
58
+ "special": false
59
+ },
60
+ "50263": {
61
+ "content": " ",
62
+ "lstrip": false,
63
+ "normalized": true,
64
+ "rstrip": false,
65
+ "single_word": false,
66
+ "special": false
67
+ },
68
+ "50264": {
69
+ "content": " ",
70
+ "lstrip": false,
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+ "normalized": true,
72
+ "rstrip": false,
73
+ "single_word": false,
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+ "special": false
75
+ },
76
+ "50265": {
77
+ "content": " ",
78
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79
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80
+ "rstrip": false,
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+ "special": false
83
+ },
84
+ "50266": {
85
+ "content": " ",
86
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87
+ "normalized": true,
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+ "rstrip": false,
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+ "single_word": false,
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+ "special": false
91
+ },
92
+ "50267": {
93
+ "content": " ",
94
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+ "normalized": true,
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+ "single_word": false,
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+ "special": false
99
+ },
100
+ "50268": {
101
+ "content": " ",
102
+ "lstrip": false,
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+ "normalized": true,
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+ "rstrip": false,
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+ "single_word": false,
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+ "special": false
107
+ },
108
+ "50269": {
109
+ "content": " ",
110
+ "lstrip": false,
111
+ "normalized": true,
112
+ "rstrip": false,
113
+ "single_word": false,
114
+ "special": false
115
+ },
116
+ "50270": {
117
+ "content": " ",
118
+ "lstrip": false,
119
+ "normalized": true,
120
+ "rstrip": false,
121
+ "single_word": false,
122
+ "special": false
123
+ },
124
+ "50271": {
125
+ "content": " ",
126
+ "lstrip": false,
127
+ "normalized": true,
128
+ "rstrip": false,
129
+ "single_word": false,
130
+ "special": false
131
+ },
132
+ "50272": {
133
+ "content": " ",
134
+ "lstrip": false,
135
+ "normalized": true,
136
+ "rstrip": false,
137
+ "single_word": false,
138
+ "special": false
139
+ },
140
+ "50273": {
141
+ "content": " ",
142
+ "lstrip": false,
143
+ "normalized": true,
144
+ "rstrip": false,
145
+ "single_word": false,
146
+ "special": false
147
+ },
148
+ "50274": {
149
+ "content": " ",
150
+ "lstrip": false,
151
+ "normalized": true,
152
+ "rstrip": false,
153
+ "single_word": false,
154
+ "special": false
155
+ },
156
+ "50275": {
157
+ "content": " ",
158
+ "lstrip": false,
159
+ "normalized": true,
160
+ "rstrip": false,
161
+ "single_word": false,
162
+ "special": false
163
+ },
164
+ "50276": {
165
+ "content": " ",
166
+ "lstrip": false,
167
+ "normalized": true,
168
+ "rstrip": false,
169
+ "single_word": false,
170
+ "special": false
171
+ },
172
+ "50277": {
173
+ "content": " ",
174
+ "lstrip": false,
175
+ "normalized": true,
176
+ "rstrip": false,
177
+ "single_word": false,
178
+ "special": false
179
+ },
180
+ "50278": {
181
+ "content": " ",
182
+ "lstrip": false,
183
+ "normalized": true,
184
+ "rstrip": false,
185
+ "single_word": false,
186
+ "special": false
187
+ },
188
+ "50279": {
189
+ "content": " ",
190
+ "lstrip": false,
191
+ "normalized": true,
192
+ "rstrip": false,
193
+ "single_word": false,
194
+ "special": false
195
+ },
196
+ "50280": {
197
+ "content": " ",
198
+ "lstrip": false,
199
+ "normalized": true,
200
+ "rstrip": false,
201
+ "single_word": false,
202
+ "special": false
203
+ },
204
+ "50281": {
205
+ "content": " ",
206
+ "lstrip": false,
207
+ "normalized": true,
208
+ "rstrip": false,
209
+ "single_word": false,
210
+ "special": false
211
+ },
212
+ "50282": {
213
+ "content": " ",
214
+ "lstrip": false,
215
+ "normalized": true,
216
+ "rstrip": false,
217
+ "single_word": false,
218
+ "special": false
219
+ },
220
+ "50283": {
221
+ "content": " ",
222
+ "lstrip": false,
223
+ "normalized": true,
224
+ "rstrip": false,
225
+ "single_word": false,
226
+ "special": false
227
+ },
228
+ "50284": {
229
+ "content": " ",
230
+ "lstrip": false,
231
+ "normalized": true,
232
+ "rstrip": false,
233
+ "single_word": false,
234
+ "special": false
235
+ },
236
+ "50285": {
237
+ "content": " ",
238
+ "lstrip": false,
239
+ "normalized": true,
240
+ "rstrip": false,
241
+ "single_word": false,
242
+ "special": false
243
+ },
244
+ "50286": {
245
+ "content": " ",
246
+ "lstrip": false,
247
+ "normalized": true,
248
+ "rstrip": false,
249
+ "single_word": false,
250
+ "special": false
251
+ },
252
+ "50287": {
253
+ "content": "\t\t\t\t\t\t\t\t\t",
254
+ "lstrip": false,
255
+ "normalized": true,
256
+ "rstrip": false,
257
+ "single_word": false,
258
+ "special": false
259
+ },
260
+ "50288": {
261
+ "content": "\t\t\t\t\t\t\t\t",
262
+ "lstrip": false,
263
+ "normalized": true,
264
+ "rstrip": false,
265
+ "single_word": false,
266
+ "special": false
267
+ },
268
+ "50289": {
269
+ "content": "\t\t\t\t\t\t\t",
270
+ "lstrip": false,
271
+ "normalized": true,
272
+ "rstrip": false,
273
+ "single_word": false,
274
+ "special": false
275
+ },
276
+ "50290": {
277
+ "content": "\t\t\t\t\t\t",
278
+ "lstrip": false,
279
+ "normalized": true,
280
+ "rstrip": false,
281
+ "single_word": false,
282
+ "special": false
283
+ },
284
+ "50291": {
285
+ "content": "\t\t\t\t\t",
286
+ "lstrip": false,
287
+ "normalized": true,
288
+ "rstrip": false,
289
+ "single_word": false,
290
+ "special": false
291
+ },
292
+ "50292": {
293
+ "content": "\t\t\t\t",
294
+ "lstrip": false,
295
+ "normalized": true,
296
+ "rstrip": false,
297
+ "single_word": false,
298
+ "special": false
299
+ },
300
+ "50293": {
301
+ "content": "\t\t\t",
302
+ "lstrip": false,
303
+ "normalized": true,
304
+ "rstrip": false,
305
+ "single_word": false,
306
+ "special": false
307
+ },
308
+ "50294": {
309
+ "content": "\t\t",
310
+ "lstrip": false,
311
+ "normalized": true,
312
+ "rstrip": false,
313
+ "single_word": false,
314
+ "special": false
315
+ },
316
+ "50295": {
317
+ "content": "<|im_end|>",
318
+ "lstrip": false,
319
+ "normalized": false,
320
+ "rstrip": false,
321
+ "single_word": false,
322
+ "special": true
323
+ },
324
+ "50296": {
325
+ "content": "<|im_start|>",
326
+ "lstrip": false,
327
+ "normalized": false,
328
+ "rstrip": false,
329
+ "single_word": false,
330
+ "special": false
331
+ }
332
+ },
333
+ "bos_token": "<|endoftext|>",
334
+ "chat_template": "{% if not add_generation_prompt is defined %}{% set add_generation_prompt = false %}{% endif %}{% for message in messages %}{{'<|im_start|>' + message['role'] + '\n' + message['content'] + '<|im_end|>' + '\n'}}{% endfor %}{% if add_generation_prompt %}{{ '<|im_start|>assistant\n' }}{% endif %}",
335
+ "clean_up_tokenization_spaces": true,
336
+ "eos_token": "<|im_end|>",
337
+ "legacy": false,
338
+ "model_max_length": 2048,
339
+ "pad_token": "<|endoftext|>",
340
+ "return_token_type_ids": false,
341
+ "tokenizer_class": "CodeGenTokenizer",
342
+ "unk_token": "<|endoftext|>"
343
+ }
vocab.json ADDED
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