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README.md
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---
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library_name: transformers
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pipeline_tag: image-text-to-text
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inference: true
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widget:
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- text: Hello!
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example_title: Hello world
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group: Python
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base_model:
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- Qwen/Qwen3-VL-8B-Thinking
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---
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This tiny model is intended for debugging. It is randomly initialized using the configuration adapted from [Qwen/Qwen3-VL-8B-Thinking](https://huggingface.co/Qwen/Qwen3-VL-8B-Thinking).
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### Example usage:
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```python
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import numpy as np
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import torch
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import transformers
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from PIL import Image
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from transformers import (
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AutoModel,
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AutoModelForCausalLM,
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AutoProcessor,
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AutoTokenizer,
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Qwen3VLForConditionalGeneration,
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)
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model_id = "tiny-random/qwen3-vl"
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model = Qwen3VLForConditionalGeneration.from_pretrained(
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model_id, dtype=torch.bfloat16, device_map="cuda",
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attn_implementation="flash_attention_2",
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)
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processor = AutoProcessor.from_pretrained(model_id)
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messages = [
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{
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"role": "user",
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"content": [
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{
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"type": "image",
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"image": "https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-VL/assets/demo.jpeg",
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},
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{"type": "text", "text": "Describe this image."},
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],
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}
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]
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# Preparation for inference
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inputs = processor.apply_chat_template(
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messages,
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tokenize=True,
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add_generation_prompt=True,
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return_dict=True,
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return_tensors="pt"
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).to(model.device)
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# Inference: Generation of the output
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generated_ids = model.generate(**inputs, max_new_tokens=32)
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generated_ids_trimmed = [
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out_ids[len(in_ids):] for in_ids, out_ids in zip(inputs.input_ids, generated_ids)
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]
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output_text = processor.batch_decode(
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generated_ids_trimmed, skip_special_tokens=True, clean_up_tokenization_spaces=False
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)
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print(output_text)
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```
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### Codes to create this repo:
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```python
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import json
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from pathlib import Path
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import accelerate
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import torch
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from huggingface_hub import file_exists, hf_hub_download
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from transformers import (
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AutoConfig,
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AutoModelForCausalLM,
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AutoProcessor,
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GenerationConfig,
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# Qwen3VLMoeForConditionalGeneration,
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Qwen3VLForConditionalGeneration,
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set_seed,
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)
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source_model_id = "Qwen/Qwen3-VL-8B-Thinking"
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save_folder = "/tmp/tiny-random/qwen3-vl"
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processor = AutoProcessor.from_pretrained(source_model_id, trust_remote_code=True)
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processor.save_pretrained(save_folder)
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with open(hf_hub_download(source_model_id, filename='config.json', repo_type='model'), 'r', encoding='utf-8') as f:
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config_json = json.load(f)
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config_json['text_config'].update({
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'head_dim': 32,
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'hidden_size': 8,
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'intermediate_size': 64,
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'moe_intermediate_size': 64,
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'num_hidden_layers': 2,
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'num_attention_heads': 8,
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'num_key_value_heads': 4,
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})
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config_json['text_config']['rope_scaling']['mrope_section'] = [8, 4, 4]
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config_json['vision_config'].update(
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{
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'hidden_size': 32 * 4,
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'intermediate_size': 64,
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'num_heads': 4,
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'out_hidden_size': 8,
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'depth': 6,
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'deepstack_visual_indexes': [1, 3, 5],
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}
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)
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with open(f"{save_folder}/config.json", "w", encoding='utf-8') as f:
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json.dump(config_json, f, indent=2)
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config = AutoConfig.from_pretrained(
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save_folder,
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trust_remote_code=True,
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)
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print(config)
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torch.set_default_dtype(torch.bfloat16)
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model = Qwen3VLForConditionalGeneration(config)
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torch.set_default_dtype(torch.float32)
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if file_exists(filename="generation_config.json", repo_id=source_model_id, repo_type='model'):
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model.generation_config = GenerationConfig.from_pretrained(
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source_model_id, trust_remote_code=True,
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)
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model.generation_config.do_sample = True
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print(model.generation_config)
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model = model.cpu()
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with torch.no_grad():
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for name, p in sorted(model.named_parameters()):
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torch.nn.init.normal_(p, 0, 0.1)
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print(name, p.shape)
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model.save_pretrained(save_folder)
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```
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### Printing the model:
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```text
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Qwen3VLForConditionalGeneration(
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(model): Qwen3VLModel(
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(visual): Qwen3VLVisionModel(
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(patch_embed): Qwen3VLVisionPatchEmbed(
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(proj): Conv3d(3, 128, kernel_size=(2, 16, 16), stride=(2, 16, 16))
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)
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(pos_embed): Embedding(2304, 128)
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(rotary_pos_emb): Qwen3VLVisionRotaryEmbedding()
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(blocks): ModuleList(
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(0-5): 6 x Qwen3VLVisionBlock(
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(norm1): LayerNorm((128,), eps=1e-06, elementwise_affine=True)
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(norm2): LayerNorm((128,), eps=1e-06, elementwise_affine=True)
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(attn): Qwen3VLVisionAttention(
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(qkv): Linear(in_features=128, out_features=384, bias=True)
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(proj): Linear(in_features=128, out_features=128, bias=True)
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)
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(mlp): Qwen3VLVisionMLP(
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(linear_fc1): Linear(in_features=128, out_features=64, bias=True)
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(linear_fc2): Linear(in_features=64, out_features=128, bias=True)
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(act_fn): PytorchGELUTanh()
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)
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)
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)
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(merger): Qwen3VLVisionPatchMerger(
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(norm): LayerNorm((128,), eps=1e-06, elementwise_affine=True)
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(linear_fc1): Linear(in_features=512, out_features=512, bias=True)
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(act_fn): GELU(approximate='none')
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(linear_fc2): Linear(in_features=512, out_features=8, bias=True)
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)
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(deepstack_merger_list): ModuleList(
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(0-2): 3 x Qwen3VLVisionPatchMerger(
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(norm): LayerNorm((512,), eps=1e-06, elementwise_affine=True)
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(linear_fc1): Linear(in_features=512, out_features=512, bias=True)
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(act_fn): GELU(approximate='none')
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(linear_fc2): Linear(in_features=512, out_features=8, bias=True)
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)
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)
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)
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(language_model): Qwen3VLTextModel(
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(embed_tokens): Embedding(151936, 8)
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(layers): ModuleList(
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(0-1): 2 x Qwen3VLTextDecoderLayer(
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(self_attn): Qwen3VLTextAttention(
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(q_proj): Linear(in_features=8, out_features=256, bias=False)
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(k_proj): Linear(in_features=8, out_features=128, bias=False)
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(v_proj): Linear(in_features=8, out_features=128, bias=False)
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(o_proj): Linear(in_features=256, out_features=8, bias=False)
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(q_norm): Qwen3VLTextRMSNorm((32,), eps=1e-06)
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(k_norm): Qwen3VLTextRMSNorm((32,), eps=1e-06)
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)
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(mlp): Qwen3VLTextMLP(
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(gate_proj): Linear(in_features=8, out_features=64, bias=False)
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(up_proj): Linear(in_features=8, out_features=64, bias=False)
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(down_proj): Linear(in_features=64, out_features=8, bias=False)
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(act_fn): SiLU()
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)
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(input_layernorm): Qwen3VLTextRMSNorm((8,), eps=1e-06)
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(post_attention_layernorm): Qwen3VLTextRMSNorm((8,), eps=1e-06)
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)
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)
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(norm): Qwen3VLTextRMSNorm((8,), eps=1e-06)
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(rotary_emb): Qwen3VLTextRotaryEmbedding()
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)
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)
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(lm_head): Linear(in_features=8, out_features=151936, bias=False)
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)
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```
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