harshit2312 commited on
Commit
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Add Nanbeige4.2-3B 8-bit MLX conversion + arch module

Browse files
.gitattributes CHANGED
@@ -33,3 +33,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
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  *.zip filter=lfs diff=lfs merge=lfs -text
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  *.zst filter=lfs diff=lfs merge=lfs -text
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  *tfevents* filter=lfs diff=lfs merge=lfs -text
 
 
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  *.zip filter=lfs diff=lfs merge=lfs -text
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  *.zst filter=lfs diff=lfs merge=lfs -text
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  *tfevents* filter=lfs diff=lfs merge=lfs -text
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+ tokenizer.json filter=lfs diff=lfs merge=lfs -text
README.md ADDED
@@ -0,0 +1,70 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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+ ---
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+ license: apache-2.0
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+ language:
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+ - en
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+ - zh
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+ library_name: mlx
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+ pipeline_tag: text-generation
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+ tags:
9
+ - llm
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+ - nanbeige
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+ - mlx
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+ base_model: Nanbeige/Nanbeige4.2-3B
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+ ---
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+
15
+ # harshit2312/Nanbeige4.2-3B-mlx-8bit
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+
17
+ This is an **8-bit MLX** conversion of [Nanbeige/Nanbeige4.2-3B](https://huggingface.co/Nanbeige/Nanbeige4.2-3B),
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+ for running on Apple Silicon. Converted from the official weights with
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+ [mlx-lm](https://github.com/ml-explore/mlx-lm) **0.31.3** (8-bit, group size 64).
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+
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+ ## ⚠️ Requires a custom architecture module
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+
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+ Nanbeige4.2 is a **looped / recurrent-depth transformer** (`num_loops: 2` — the decoder
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+ stack is executed twice, each pass with its own KV cache). Stock `mlx-lm` does **not**
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+ ship a `nanbeige` architecture, so loading this repo directly will fail with
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+ `Model type nanbeige not supported`. Install the bundled `nanbeige.py` into your mlx-lm first:
27
+
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+ ```python
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+ import os, shutil, mlx_lm
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+ from huggingface_hub import hf_hub_download
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+
32
+ src = hf_hub_download("harshit2312/Nanbeige4.2-3B-mlx-8bit", "nanbeige.py")
33
+ dst = os.path.join(os.path.dirname(mlx_lm.__file__), "models", "nanbeige.py")
34
+ shutil.copy(src, dst)
35
+ print("installed nanbeige architecture ->", dst)
36
+ ```
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+
38
+ ## Use with mlx
39
+
40
+ ```bash
41
+ pip install mlx-lm
42
+ ```
43
+
44
+ ```python
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+ from mlx_lm import load, generate
46
+
47
+ model, tokenizer = load("harshit2312/Nanbeige4.2-3B-mlx-8bit")
48
+
49
+ messages = [{"role": "user", "content": "What is unified memory on Apple Silicon?"}]
50
+ prompt = tokenizer.apply_chat_template(messages, add_generation_prompt=True)
51
+
52
+ response = generate(model, tokenizer, prompt=prompt, verbose=True, max_tokens=512)
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+ ```
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+
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+ > Note: Nanbeige4.2-3B is a **reasoning model** — its chat template opens the assistant
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+ > turn with a `<think>` block, so responses begin with visible chain-of-thought.
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+
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+ ## Verification
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+
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+ The MLX architecture port was validated against the official HuggingFace implementation
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+ (fp32, eager attention): **40/40 greedy tokens matched**, with the MLX token being the
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+ reference's argmax at every position.
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+
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+ ## Conversion details
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+
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+ | | |
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+ |---|---|
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+ | Precision | 8-bit affine, group size 64 (~8.5 bits/weight) |
69
+ | Size | ~4.2 GB |
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+ | Architecture | Llama-style (GQA 48/8 heads, head_dim 128, SwiGLU, RoPE θ=70M) + `num_loops=2` |
chat_template.jinja ADDED
@@ -0,0 +1,195 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+
2
+
3
+ {%- macro visible_text(content) -%}
4
+ {%- if content is string -%}
5
+ {{- content }}
6
+ {%- elif content is iterable and content is not mapping -%}
7
+ {%- for item in content -%}
8
+ {%- if item is mapping and item.type == 'text' -%}
9
+ {{- item.text }}
10
+ {%- elif item is string -%}
11
+ {{- item }}
12
+ {%- elif item is mapping and item.type in ['image', 'image_url', 'video', 'video_url', 'audio', 'audio_url', 'input_audio'] -%}
13
+ {%- set media_type = item.type | replace('_url', '') | replace('input_', '') -%}
14
+ {{- "<reminder>You are unable to process this " ~ media_type ~ " because you don't have multi-modal input ability. Try different methods.</reminder>" }}
15
+ {%- endif -%}
16
+ {%- endfor -%}
17
+ {%- else -%}
18
+ {{- content }}
19
+ {%- endif -%}
20
+ {%- endmacro -%}
21
+
22
+
23
+ {%- set tool_call_format = tool_call_format if tool_call_format is defined else 'xml' %}
24
+ {%- if tools %}
25
+ {{- '<|im_start|>system\n' }}
26
+ {%- if messages|length > 0 and messages[0].get('role', '') == 'system' %}
27
+ {{- visible_text(messages[0].content) + '\n\n' }}
28
+ {%- else %}
29
+ {{- '你是一位工具函数调用专家,你会得到一个问题和一组可能的工具函数。根据问题,你需要进行一个或多个函数/工具调用以实现目的,请尽量尝试探索通过工具解决问题。\n如果没有一个函数可以使用,请直接使用自然语言回复用户。\n如果给定的问题缺少函数所需的参数,请使用自然语言进行提问,向用户询问必要信息。\n如果调用结果已经足够回答用户问题,请对历史结果进行总结,使用自然语言回复用户。' }}
30
+ {%- endif %}
31
+
32
+ {{- "# Tools\n\nYou may call one or more functions to assist with the user query.\n\nYou are provided with function signatures within <tools></tools> XML tags:\n<tools>" }}
33
+ {%- for tool in tools %}
34
+ {{- "\n" }}
35
+ {{- tool | tojson }}
36
+ {%- endfor %}
37
+
38
+ {%- if tool_call_format == 'json' %}
39
+ {{- "\n</tools>\n\nFor each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:\n" }}
40
+ {{- '<tool_call>\n{\"name\": <function-name>, \"arguments\": <args-json-object>}\n</tool_call><|im_end|>\n' }}
41
+ {%- else %}
42
+ {{- "\n</tools>\n\nFor each function call, output the function name and arguments within the following XML format:\n" }}
43
+ {{- '<tool_call>
44
+ <function=example_function_name>
45
+ <parameter=example_parameter_1>
46
+ value_1
47
+ </parameter>
48
+ <parameter=example_parameter_2>
49
+ This is the value for the second parameter
50
+ that can span
51
+ multiple lines
52
+ </parameter>
53
+ </function>
54
+ </tool_call><|im_end|>\n' }}
55
+ {%- endif %}
56
+
57
+ {%- else %}
58
+ {%- if messages|length > 0 and messages[0].get('role', '') == 'system' %}
59
+ {{- '<|im_start|>system\n' + visible_text(messages[0].content) + '<|im_end|>\n' }}
60
+ {%- else %}
61
+ {{- '<|im_start|>system\n你是南北阁,一款由BOSS直聘自主研发并训练的专业大语言模型。<|im_end|>\n' }}
62
+ {%- endif %}
63
+ {%- endif %}
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+
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+ {%- set ns = namespace(multi_step_tool=true, last_query_index=messages|length - 1) %}
66
+ {%- for message in messages[::-1] %}
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+ {%- set index = (messages|length - 1) - loop.index0 %}
68
+ {%- if ns.multi_step_tool and message.get('role', '') == "user" and visible_text(message.content) is string and not(visible_text(message.content).startswith('<tool_response>') and visible_text(message.content).endswith('</tool_response>')) %}
69
+ {%- set ns.multi_step_tool = false %}
70
+ {%- set ns.last_query_index = index %}
71
+ {%- endif %}
72
+ {%- endfor %}
73
+
74
+ {%- for message in messages %}
75
+ {%- if visible_text(message.content) is string %}
76
+ {%- set content = visible_text(message.content) %}
77
+ {%- else %}
78
+ {%- set content = '' %}
79
+ {%- endif %}
80
+
81
+ {%- if message.get('role', '') == "system" %}
82
+ {%- if not loop.first %}
83
+ {{- raise_exception('System message must be at the beginning.') }}
84
+ {%- endif %}
85
+
86
+ {%- elif message.get('role', '') == "assistant" %}
87
+ {%- set reasoning_content = '' %}
88
+ {%- if message.reasoning_content is string %}
89
+ {%- set reasoning_content = message.reasoning_content %}
90
+ {%- else %}
91
+ {%- if '</think>' in content %}
92
+ {%- set reasoning_content = content.split('</think>')[0].rstrip('\n').split('<think>')[-1].lstrip('\n') %}
93
+ {%- set content = content.split('</think>')[-1].lstrip('\n') %}
94
+ {%- endif %}
95
+ {%- endif %}
96
+ {%- set reasoning_content = reasoning_content|trim %}
97
+
98
+ {%- if (preserve_thinking is defined and preserve_thinking is false) and (loop.index0 < ns.last_query_index) %}
99
+ {{- '<|im_start|>' + message.get('role', '') + '\n<think>\n\n</think>\n\n' + content }}
100
+ {%- else %}
101
+ {{- '<|im_start|>' + message.get('role', '') + '\n<think>\n' + reasoning_content + '\n</think>\n\n' + content }}
102
+ {%- endif %}
103
+
104
+ {%- if message.tool_calls and message.tool_calls is iterable and message.tool_calls is not mapping %}
105
+ {%- if tool_call_format == 'json' %}
106
+ {%- for tool_call in message.tool_calls %}
107
+ {%- if (loop.first and content) or (not loop.first) %}
108
+ {{- '\n' }}
109
+ {%- endif %}
110
+ {%- if tool_call.function %}
111
+ {%- set tool_call = tool_call.function %}
112
+ {%- endif %}
113
+ {{- '<tool_call>\n{"name": "' }}
114
+ {{- tool_call.name }}
115
+ {{- '", "arguments": ' }}
116
+ {%- if tool_call.arguments is string %}
117
+ {{- tool_call.arguments }}
118
+ {%- else %}
119
+ {{- tool_call.arguments | tojson }}
120
+ {%- endif %}
121
+ {{- '}\n</tool_call>' }}
122
+ {%- endfor %}
123
+ {%- else %}
124
+ {%- for tool_call in message.tool_calls %}
125
+ {%- if tool_call.function is defined %}
126
+ {%- set tool_call = tool_call.function %}
127
+ {%- endif %}
128
+
129
+ {%- if loop.first %}
130
+ {%- if content|trim %}
131
+ {{- '
132
+
133
+ <tool_call>
134
+ <function=' + tool_call.name + '>
135
+ ' }}
136
+ {%- else %}
137
+ {{- '<tool_call>
138
+ <function=' + tool_call.name + '>
139
+ ' }}
140
+ {%- endif %}
141
+ {%- else %}
142
+ {{- '
143
+ <tool_call>
144
+ <function=' + tool_call.name + '>
145
+ ' }}
146
+ {%- endif %}
147
+
148
+ {%- if tool_call.arguments is defined %}
149
+ {%- for args_name, args_value in tool_call.arguments|items %}
150
+ {{- '<parameter=' + args_name + '>
151
+ ' }}
152
+ {%- set args_value = args_value | string if args_value is string else args_value | tojson | safe %}
153
+ {{- args_value }}
154
+ {{- '
155
+ </parameter>
156
+ ' }}
157
+ {%- endfor %}
158
+ {%- endif %}
159
+ {{- '</function>
160
+ </tool_call>' }}
161
+ {%- endfor %}
162
+ {%- endif %}
163
+ {%- endif %}
164
+ {{- '<|im_end|>\n' }}
165
+
166
+ {%- elif message.get('role', '') == "tool" %}
167
+ {%- if loop.previtem and loop.previtem.get('role', '') != "tool" %}
168
+ {{- '<|im_start|>user' }}
169
+ {%- endif %}
170
+ {{- '\n<tool_response>\n' }}
171
+ {{- content }}
172
+ {{- '\n</tool_response>' }}
173
+ {%- if loop.last or loop.nextitem.get('role', '') != "tool" %}
174
+ {{- '<|im_end|>\n' }}
175
+ {%- endif %}
176
+ {%- elif message.get('role', '') != '' %}
177
+ {{- '<|im_start|>' + message.get('role', '') + '\n' + content + '<|im_end|>' + '\n' }}
178
+ {%- endif %}
179
+ {%- endfor %}
180
+
181
+ {%- if add_generation_prompt %}
182
+ {{- '<|im_start|>assistant\n' }}
183
+
184
+ {%- if enable_thinking is defined and enable_thinking is false %}
185
+ {{- '<think>
186
+
187
+ </think>
188
+
189
+ ' }}
190
+ {%- else %}
191
+ {{- '<think>
192
+ ' }}
193
+ {%- endif %}
194
+
195
+ {%- endif %}
config.json ADDED
@@ -0,0 +1,44 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
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+ "architectures": [
3
+ "NanbeigeForCausalLM"
4
+ ],
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+ "attention_bias": false,
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+ "attention_dropout": 0.0,
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+ "bos_token_id": 166100,
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+ "eos_token_id": 166101,
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+ "head_dim": 128,
10
+ "hidden_act": "silu",
11
+ "hidden_size": 3072,
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+ "initializer_range": 0.02,
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+ "intermediate_size": 10752,
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+ "kv_channels": 128,
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+ "loop_loss_weights": [],
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+ "max_length": null,
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+ "max_position_embeddings": 262144,
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+ "model_type": "nanbeige",
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+ "num_attention_heads": 48,
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+ "num_hidden_layers": 22,
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+ "num_key_value_heads": 8,
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+ "num_loops": 2,
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+ "pad_token_id": 0,
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+ "pretraining_tp": 1,
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+ "quantization": {
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+ "group_size": 64,
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+ "bits": 8,
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+ "mode": "affine"
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+ },
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+ "quantization_config": {
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+ "group_size": 64,
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+ "bits": 8,
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+ "mode": "affine"
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+ },
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+ "rms_norm_eps": 1e-05,
36
+ "rope_scaling": null,
37
+ "rope_theta": 70000000,
38
+ "skip_loop_final_norm": false,
39
+ "tie_word_embeddings": false,
40
+ "torch_dtype": "bfloat16",
41
+ "transformers_version": "4.42.4",
42
+ "use_cache": true,
43
+ "vocab_size": 166144
44
+ }
generation_config.json ADDED
@@ -0,0 +1,10 @@
 
 
 
 
 
 
 
 
 
 
 
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+ {
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+ "bos_token_id": 166100,
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+ "do_sample": true,
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+ "eos_token_id": 166101,
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+ "pad_token_id": 0,
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+ "temperature": 0.6,
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+ "top_k": 20,
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+ "top_p": 0.95,
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+ "transformers_version": "4.51.0"
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+ }
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+ }
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+ }
nanbeige.py ADDED
@@ -0,0 +1,197 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # Copyright © 2024 Apple Inc.
2
+ # mlx-lm architecture module for Nanbeige4.2 (looped / recurrent-depth transformer).
3
+ #
4
+ # Nanbeige4.2 is Llama-style (GQA attention, SwiGLU MLP, RMSNorm, rotary embeddings)
5
+ # with one twist: the full decoder stack is executed `num_loops` times. Each loop pass
6
+ # keeps its own KV-cache slice, and (when skip_loop_final_norm is False) the final
7
+ # RMSNorm is applied at the end of every loop pass — the normalized output of one loop
8
+ # feeds the next loop as input.
9
+
10
+ from dataclasses import dataclass
11
+ from typing import Any, Dict, Optional, Union
12
+
13
+ import mlx.core as mx
14
+ import mlx.nn as nn
15
+
16
+ from .base import BaseModelArgs, create_attention_mask, scaled_dot_product_attention
17
+ from .cache import KVCache
18
+ from .rope_utils import initialize_rope
19
+
20
+
21
+ @dataclass
22
+ class ModelArgs(BaseModelArgs):
23
+ model_type: str
24
+ hidden_size: int
25
+ num_hidden_layers: int
26
+ intermediate_size: int
27
+ num_attention_heads: int
28
+ rms_norm_eps: float
29
+ vocab_size: int
30
+ head_dim: Optional[int] = None
31
+ max_position_embeddings: Optional[int] = None
32
+ num_key_value_heads: Optional[int] = None
33
+ attention_bias: bool = False
34
+ mlp_bias: bool = False
35
+ rope_theta: float = 10000.0
36
+ rope_traditional: bool = False
37
+ rope_scaling: Optional[Dict[str, Union[float, str]]] = None
38
+ tie_word_embeddings: bool = False
39
+ num_loops: int = 1
40
+ skip_loop_final_norm: bool = False
41
+
42
+ def __post_init__(self):
43
+ if self.num_key_value_heads is None:
44
+ self.num_key_value_heads = self.num_attention_heads
45
+ if self.num_loops < 1:
46
+ self.num_loops = 1
47
+
48
+
49
+ class Attention(nn.Module):
50
+ def __init__(self, args: ModelArgs):
51
+ super().__init__()
52
+ dim = args.hidden_size
53
+ self.n_heads = args.num_attention_heads
54
+ self.n_kv_heads = args.num_key_value_heads
55
+ self.head_dim = head_dim = args.head_dim or (dim // self.n_heads)
56
+ self.scale = head_dim**-0.5
57
+
58
+ self.q_proj = nn.Linear(dim, self.n_heads * head_dim, bias=args.attention_bias)
59
+ self.k_proj = nn.Linear(dim, self.n_kv_heads * head_dim, bias=args.attention_bias)
60
+ self.v_proj = nn.Linear(dim, self.n_kv_heads * head_dim, bias=args.attention_bias)
61
+ self.o_proj = nn.Linear(self.n_heads * head_dim, dim, bias=args.attention_bias)
62
+
63
+ self.rope = initialize_rope(
64
+ self.head_dim,
65
+ args.rope_theta,
66
+ args.rope_traditional,
67
+ args.rope_scaling,
68
+ args.max_position_embeddings,
69
+ )
70
+
71
+ def __call__(self, x: mx.array, mask=None, cache=None) -> mx.array:
72
+ B, L, D = x.shape
73
+
74
+ queries, keys, values = self.q_proj(x), self.k_proj(x), self.v_proj(x)
75
+ queries = queries.reshape(B, L, self.n_heads, -1).transpose(0, 2, 1, 3)
76
+ keys = keys.reshape(B, L, self.n_kv_heads, -1).transpose(0, 2, 1, 3)
77
+ values = values.reshape(B, L, self.n_kv_heads, -1).transpose(0, 2, 1, 3)
78
+
79
+ if cache is not None:
80
+ queries = self.rope(queries, offset=cache.offset)
81
+ keys = self.rope(keys, offset=cache.offset)
82
+ keys, values = cache.update_and_fetch(keys, values)
83
+ else:
84
+ queries = self.rope(queries)
85
+ keys = self.rope(keys)
86
+
87
+ output = scaled_dot_product_attention(
88
+ queries, keys, values, cache=cache, scale=self.scale, mask=mask
89
+ )
90
+ output = output.transpose(0, 2, 1, 3).reshape(B, L, -1)
91
+ return self.o_proj(output)
92
+
93
+
94
+ class MLP(nn.Module):
95
+ def __init__(self, args: ModelArgs):
96
+ super().__init__()
97
+ dim, hidden = args.hidden_size, args.intermediate_size
98
+ self.gate_proj = nn.Linear(dim, hidden, bias=args.mlp_bias)
99
+ self.down_proj = nn.Linear(hidden, dim, bias=args.mlp_bias)
100
+ self.up_proj = nn.Linear(dim, hidden, bias=args.mlp_bias)
101
+
102
+ def __call__(self, x) -> mx.array:
103
+ return self.down_proj(nn.silu(self.gate_proj(x)) * self.up_proj(x))
104
+
105
+
106
+ class TransformerBlock(nn.Module):
107
+ def __init__(self, args: ModelArgs):
108
+ super().__init__()
109
+ self.self_attn = Attention(args)
110
+ self.mlp = MLP(args)
111
+ self.input_layernorm = nn.RMSNorm(args.hidden_size, eps=args.rms_norm_eps)
112
+ self.post_attention_layernorm = nn.RMSNorm(
113
+ args.hidden_size, eps=args.rms_norm_eps
114
+ )
115
+
116
+ def __call__(self, x: mx.array, mask=None, cache=None) -> mx.array:
117
+ r = self.self_attn(self.input_layernorm(x), mask, cache)
118
+ h = x + r
119
+ r = self.mlp(self.post_attention_layernorm(h))
120
+ return h + r
121
+
122
+
123
+ class NanbeigeModel(nn.Module):
124
+ def __init__(self, args: ModelArgs):
125
+ super().__init__()
126
+ self.args = args
127
+ self.num_hidden_layers = args.num_hidden_layers
128
+ self.num_loops = args.num_loops
129
+ self.skip_loop_final_norm = args.skip_loop_final_norm
130
+ assert args.vocab_size > 0
131
+ self.embed_tokens = nn.Embedding(args.vocab_size, args.hidden_size)
132
+ self.layers = [TransformerBlock(args) for _ in range(args.num_hidden_layers)]
133
+ self.norm = nn.RMSNorm(args.hidden_size, eps=args.rms_norm_eps)
134
+
135
+ def __call__(self, inputs: mx.array, cache=None, input_embeddings=None):
136
+ if input_embeddings is not None:
137
+ h = input_embeddings
138
+ else:
139
+ h = self.embed_tokens(inputs)
140
+
141
+ n = self.num_hidden_layers
142
+ if cache is None:
143
+ cache = [None] * (n * self.num_loops)
144
+
145
+ # Each loop pass replays the whole stack against its own cache slice.
146
+ for loop_idx in range(self.num_loops):
147
+ loop_cache = cache[loop_idx * n : (loop_idx + 1) * n]
148
+ mask = create_attention_mask(h, loop_cache[0])
149
+ for layer, c in zip(self.layers, loop_cache):
150
+ h = layer(h, mask, cache=c)
151
+ if not self.skip_loop_final_norm:
152
+ h = self.norm(h)
153
+
154
+ if self.skip_loop_final_norm:
155
+ h = self.norm(h)
156
+ return h
157
+
158
+
159
+ class Model(nn.Module):
160
+ def __init__(self, args: ModelArgs):
161
+ super().__init__()
162
+ self.args = args
163
+ self.model_type = args.model_type
164
+ self.model = NanbeigeModel(args)
165
+ if not args.tie_word_embeddings:
166
+ self.lm_head = nn.Linear(args.hidden_size, args.vocab_size, bias=False)
167
+
168
+ def __call__(self, inputs: mx.array, cache=None, input_embeddings=None):
169
+ out = self.model(inputs, cache, input_embeddings)
170
+ if self.args.tie_word_embeddings:
171
+ out = self.model.embed_tokens.as_linear(out)
172
+ else:
173
+ out = self.lm_head(out)
174
+ return out
175
+
176
+ def sanitize(self, weights):
177
+ # Drop non-persistent rotary buffers if present in a checkpoint.
178
+ weights = {
179
+ k: v
180
+ for k, v in weights.items()
181
+ if "rotary_emb.inv_freq" not in k and ".rope." not in k
182
+ }
183
+ if self.args.tie_word_embeddings:
184
+ weights.pop("lm_head.weight", None)
185
+ return weights
186
+
187
+ @property
188
+ def layers(self):
189
+ return self.model.layers
190
+
191
+ def make_cache(self):
192
+ # One KV cache per (loop, layer): the stack is executed num_loops times
193
+ # and each pass must not see the other passes' keys/values.
194
+ return [
195
+ KVCache()
196
+ for _ in range(self.args.num_hidden_layers * self.args.num_loops)
197
+ ]
tokenizer.json ADDED
@@ -0,0 +1,3 @@
 
 
 
 
1
+ version https://git-lfs.github.com/spec/v1
2
+ oid sha256:a002676e923776f5a59d21320d667920e732000f7762fb72e6be6e911790e060
3
+ size 18450976
tokenizer_config.json ADDED
@@ -0,0 +1,17 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "add_prefix_space": true,
3
+ "backend": "tokenizers",
4
+ "bos_token": "<|im_start|>",
5
+ "clean_up_tokenization_spaces": false,
6
+ "eos_token": "<|im_end|>",
7
+ "is_local": true,
8
+ "local_files_only": false,
9
+ "model_max_length": 1000000000000000019884624838656,
10
+ "pad_token": "<unk>",
11
+ "sp_model_kwargs": {},
12
+ "spaces_between_special_tokens": false,
13
+ "tokenizer_class": "LlamaTokenizer",
14
+ "tool_parser_type": "qwen3_coder",
15
+ "unk_token": "<unk>",
16
+ "use_default_system_prompt": false
17
+ }