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  - K-quants (Q*_K variants) generally perform better than legacy quants
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  - I-quants (IQ* variants) use advanced quantization techniques for better quality at same size
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  - The 72B model requires substantial memory even at lower quantizations
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- - For most users, Q4_K_M or Q4_K provides the best balance of quality and resource usage
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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  - K-quants (Q*_K variants) generally perform better than legacy quants
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  - I-quants (IQ* variants) use advanced quantization techniques for better quality at same size
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  - The 72B model requires substantial memory even at lower quantizations
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+ - For most users, Q4_K_M or Q4_K provides the best balance of quality and resource usage
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+
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+ # Original Model Card
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+
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+
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+ ## Qwen3-72B-Embiggened πŸš€
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+
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+ *"A noble spirit embiggens the smallest model"*
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+
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+ ## Model Description
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+
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+ Qwen3-72B-Embiggened is an experimental expansion of Qwen3-32B to match the full Qwen3-72B architecture. Through a novel two-stage process combining structure-aware interpolation and simple layer duplication, we've created a model with 72B-scale architecture from 32B weights.
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+
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+ the code to generate this model is here: [stage2_v3.py](https://huggingface.co/cognitivecomputations/Qwen3-72B-Embiggened/blob/main/stage2_v3.py)
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+
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+ The next step of this process is to distill Qwen3-235B into this model. The resulting model will be called Qwen3-72B-Distilled
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+
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+ This model was made possible by excellent AMD mi300x compute generously provided by [Hot Aisle](https://hotaisle.xyz/).
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+
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+ **⚠️ Experimental Model**: This model is created through weight interpolation and duplication, and has not been further trained. Performance characteristics may differ from a natively trained 72B model.
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+
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+ ## Key Features
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+
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+ - βœ… Full Qwen3-72B architecture (8192 hidden, 80 layers)
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+ - πŸ”§ Created via mathematical interpolation + layer duplication
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+ - πŸ’¨ Sharted weight format for efficient loading
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+ - πŸ§ͺ Extensively tested with comprehensive diagnostics
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+ - 🎯 Preserves Qwen3's Group Query Attention design
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+ - πŸ“Š 80% coherence rate in initial testing
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+
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+ ## Architecture
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+
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+ ### Final Specifications
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+ ```
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+ Hidden Size: 8,192
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+ Intermediate Size: 29,568
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+ Attention Heads: 64
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+ KV Heads: 8 (GQA)
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+ Layers: 80
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+ Vocabulary: 151,936
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+ Total Parameters: ~72B
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+ ```
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+
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+ ## Creation Process
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+
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+ ### Stage 1: Dimensional Expansion (32B β†’ 64-layer 72B architecture)
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+ 1. **Structure-Aware Interpolation**: Expanded hidden dimensions from 5,120 to 8,192
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+ 2. **Layer-Dependent Weights**: Conservative for early layers, aggressive for late layers
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+ 3. **Norm Preservation**: Maintained weight magnitudes for stability
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+ 4. **Fixed Attention Scaling**: Proper handling of Qwen's asymmetric attention design
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+
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+ ### Stage 2: Layer Expansion (64 β†’ 80 layers)
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+ 1. **Simple Duplication**: Selected middle layers (24-39) duplicated
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+ 2. **Strategic Placement**: Maintains model balance with unchanged early/late layers
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+ 3. **Proven Approach**: Similar to GPT-3 and PaLM scaling strategies
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+
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+ ### Layer Mapping
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+ ```
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+ Original 32B β†’ Embiggened 72B
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+ Layers 0-23 β†’ Layers 0-23 (unchanged)
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+ Layers 24-39 β†’ Layers 24-55 (each duplicated once)
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+ Layers 40-63 β†’ Layers 56-79 (unchanged)
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+ ```
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+
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+ ## Performance
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+
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+ ### Diagnostic Results
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+ - βœ… **Coherence Rate**: 80% on diverse prompts
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+ - βœ… **Perplexity**: 24.25 average (excellent)
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+ - βœ… **Architecture**: All dimensions verified correct
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+ - βœ… **Weight Health**: No NaN/Inf values detected
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+ - βœ… **Generation Quality**: Natural, fluent outputs
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+
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+ ### Example Outputs
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+ ```
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+ Prompt: "The capital of France is"
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+ Output: "Paris. What is the capital of Germany? The capital of Germany is Berlin."
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+
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+ Prompt: "Python is a"
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+ Output: "versatile and powerful programming language that has become the go-to tool for many developers, data scientists, and"
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+
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+ Prompt: "DNA stands for"
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+ Output: "deoxyribonucleic acid, and it is the hereditary material in all living organisms."
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+ ```
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+
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+ ## Usage
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+
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+ ### Basic Usage
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+ ```python
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+ from transformers import AutoModelForCausalLM, AutoTokenizer
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+
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+ # Load model
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+ model = AutoModelForCausalLM.from_pretrained(
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+ "Qwen3-72B-Embiggened",
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+ torch_dtype=torch.bfloat16,
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+ device_map="auto",
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+ trust_remote_code=True
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+ )
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+ tokenizer = AutoTokenizer.from_pretrained("Qwen3-72B-Embiggened")
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+
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+ # Generate text
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+ inputs = tokenizer("The meaning of life is", return_tensors="pt")
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+ outputs = model.generate(**inputs, max_new_tokens=50, temperature=0.7)
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+ print(tokenizer.decode(outputs[0], skip_special_tokens=True))
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+ ```
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+
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+ ### Advanced Usage with Quantization
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+ ```python
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+ from transformers import BitsAndBytesConfig
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+
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+ # 4-bit quantization for reduced memory usage
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+ bnb_config = BitsAndBytesConfig(
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+ load_in_4bit=True,
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+ bnb_4bit_compute_dtype=torch.bfloat16,
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+ bnb_4bit_use_double_quant=True,
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+ )
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+
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+ model = AutoModelForCausalLM.from_pretrained(
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+ "Qwen3-72B-Embiggened",
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+ quantization_config=bnb_config,
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+ device_map="auto",
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+ trust_remote_code=True
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+ )
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+ ```
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+
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+ ### vLLM Deployment
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+ ```python
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+ from vllm import LLM, SamplingParams
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+
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+ llm = LLM(model="Qwen3-72B-Embiggened", tensor_parallel_size=4)
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+ sampling_params = SamplingParams(temperature=0.7, top_p=0.9, max_tokens=100)
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+
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+ prompts = ["Tell me about quantum computing", "Write a poem about AI"]
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+ outputs = llm.generate(prompts, sampling_params)
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+ ```
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+
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+ ## Hardware Requirements
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+
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+ ### Minimum Requirements
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+ - VRAM: ~145GB (bf16) / ~73GB (int8) / ~37GB (int4)
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+ - RAM: 32GB system memory
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+ - Storage: 150GB free space
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+
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+ ### Recommended Setup
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+ - GPUs: 2Γ—A100 80GB or 2Γ—MI300X
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+ - RAM: 64GB+ system memory
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+ - Storage: NVMe SSD with 200GB free
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+
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+ ### Tested Configurations
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+ - 8Γ—AMD MI300X (development machine)
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+ - 2Γ—A100 80GB (verified working)
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+ - 4Γ—RTX 4090 (with int4 quantization)
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+
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+ ## Fine-Tuning Recommendations
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+
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+ The duplicated layers will naturally differentiate during fine-tuning:
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+
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+ ```python
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+ from transformers import TrainingArguments, Trainer
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+
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+ training_args = TrainingArguments(
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+ output_dir="./qwen3-72b-embiggened-ft",
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+ per_device_train_batch_size=1,
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+ gradient_accumulation_steps=16,
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+ warmup_steps=100,
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+ max_steps=1000,
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+ learning_rate=5e-6, # Lower LR for stability
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+ bf16=True,
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+ gradient_checkpointing=True,
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+ optim="paged_adamw_8bit",
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+ save_strategy="steps",
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+ save_steps=100,
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+ )
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+
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+ # Consider using LoRA for efficient fine-tuning
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+ from peft import LoraConfig, get_peft_model
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+
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+ lora_config = LoraConfig(
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+ r=16,
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+ lora_alpha=32,
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+ target_modules=["q_proj", "v_proj"],
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+ lora_dropout=0.1,
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+ )
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+ ```
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+
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+ ## Technical Details
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+
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+ ### Why "Embiggened"?
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+ The name references The Simpsons' made-up word that became a humorous way to describe making something larger. It perfectly captures the experimental and slightly playful nature of this architectural expansion.
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+
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+ ### Expansion Method
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+ 1. **Stage 1**: Structure-aware linear interpolation with adaptive weights
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+ - Early layers: 30% interpolation (conservative)
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+ - Middle layers: 50% interpolation (balanced)
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+ - Late layers: 70% interpolation (aggressive)
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+ - Added 0.5% structured noise for symmetry breaking
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+
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+ 2. **Stage 2**: Simple layer duplication (not SLERP)
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+ - SLERP interpolation showed artifacts and lower coherence
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+ - Direct duplication maintains stable representations
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+ - Similar to proven approaches in GPT-3 and PaLM
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+
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+ ### Sharted Weights πŸ’©
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+ The model uses "sharted" weight files (our playful term for sharded), split into ~5GB chunks for easier downloading and loading.
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+
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+ ## Limitations & Considerations
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+
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+ 1. **Experimental Nature**: Not trained post-expansion, behavior may vary
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+ 2. **Duplicate Layers**: Layers 24-39 are initially identical to their pairs
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+ 3. **Fine-tuning Recommended**: Best results with task-specific fine-tuning
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+ 4. **Memory Intensive**: Full 72B architecture requires substantial resources
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+
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+ ## Comparison with Other Approaches
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+
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+ ### vs. SLERP Interpolation
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+ - **Duplication**: 80% coherence, 24.25 perplexity βœ…
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+ - **SLERP**: 66.7% coherence, 35.57 perplexity
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+
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+ ### vs. Training from Scratch
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+ - **Pros**: Instant creation, preserves learned features
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+ - **Cons**: May lack optimization of native training
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+
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+ ## Citation
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+
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+ ```bibtex
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+ @misc{qwen3-72b-embiggened-2025,
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+ title={Qwen3-72B-Embiggened: Architectural Expansion via Interpolation and Duplication},
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+ author={[Your Name]},
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+ year={2025},
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+ howpublished={\url{https://github.com/yourusername/qwen3-embiggened}},
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+ note={A noble spirit embiggens the smallest model}
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+ }
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+ ```
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+
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+ ## License
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+
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+ This model inherits licensing from the original Qwen3-32B model. Please refer to Alibaba Cloud's Qwen licensing terms.
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+
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+ ## Acknowledgments
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+
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+ - Alibaba Cloud for the original Qwen3 models
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+ - The interpolation techniques inspired by model merging research
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+ - Layer duplication approach validated by GPT-3 and PaLM
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+ - The Simpsons for the perfectly cromulent word "embiggen"
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+ - The open-source community for continued innovation
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+
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+ ## Community & Support
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+
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+ - πŸ› **Issues**: Report problems in the GitHub repository
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+ - πŸ’‘ **Discussions**: Share experiences and improvements
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+ - 🀝 **Contributions**: PRs welcome for fine-tuning configs
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+ - πŸ“Š **Benchmarks**: Please share your evaluation results!
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+
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+ ---
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+
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+ *"From 32B to 72B in two stages - it's a perfectly cromulent expansion!"* πŸŽ‰