## 2. analyze_model.py

#```python
#!/usr/bin/env python3
"""
Comprehensive analysis of the DeepSeek-V3.1-4bit model
"""

import argparse
from transformers import AutoTokenizer, AutoConfig
import json
import logging
from pathlib import Path
import os

logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)

def analyze_model(model_path):
    """Comprehensive model analysis"""
    
    logger.info("=" * 60)
    logger.info("🔍 DeepSeek-V3.1-4bit Comprehensive Analysis")
    logger.info("=" * 60)
    
    # Load config
    try:
        config = AutoConfig.from_pretrained(model_path)
        logger.info("📊 Model Configuration:")
        logger.info(f"   Architecture: {config.architectures[0] if config.architectures else 'N/A'}")
        logger.info(f"   Model type: {getattr(config, 'model_type', 'N/A')}")
        logger.info(f"   Vocab size: {getattr(config, 'vocab_size', 'N/A'):,}")
        logger.info(f"   Hidden size: {getattr(config, 'hidden_size', 'N/A')}")
        logger.info(f"   Num hidden layers: {getattr(config, 'num_hidden_layers', 'N/A')}")
        logger.info(f"   Num attention heads: {getattr(config, 'num_attention_heads', 'N/A')}")
        logger.info(f"   Max position embeddings: {getattr(config, 'max_position_embeddings', 'N/A')}")
        logger.info(f"   Context length: {getattr(config, 'max_position_embeddings', 'N/A')}")
        
        # DeepSeek specific config
        if hasattr(config, 'rope_theta'):
            logger.info(f"   RoPE theta: {config.rope_theta}")
        if hasattr(config, 'rms_norm_eps'):
            logger.info(f"   RMS norm eps: {config.rms_norm_eps}")
            
    except Exception as e:
        logger.error(f"❌ Failed to load config: {e}")
        return
    
    # Load tokenizer
    try:
        tokenizer = AutoTokenizer.from_pretrained(model_path)
        logger.info("\n🔤 Tokenizer Analysis:")
        logger.info(f"   Vocabulary size: {tokenizer.vocab_size:,}")
        logger.info(f"   Special tokens: {len(tokenizer.special_tokens_map)}")
        logger.info(f"   Padding token: {tokenizer.pad_token}")
        logger.info(f"   EOS token: {tokenizer.eos_token}")
        logger.info(f"   BOS token: {tokenizer.bos_token}")
        
        # Check for special tokens
        special_tokens = getattr(tokenizer, 'special_tokens_map', {})
        for key, value in special_tokens.items():
            logger.info(f"   {key}: {value}")
            
    except Exception as e:
        logger.error(f"❌ Failed to load tokenizer: {e}")
        return
    
    # Test various prompts
    test_prompts = [
        "The capital of France is",
        "Artificial intelligence is",
        "The future of machine learning will",
        "Once upon a time",
        "import numpy as np",
        "量子コンピューティングとは",  # Japanese
        "El aprendizaje automático es",  # Spanish
        "机器学习是",  # Chinese
        "<|im_start|>system\nYou are a helpful assistant.<|im_end|>\n<|im_start|>user\nHello!<|im_end|>\n<|im_start|>assistant",
        "def fibonacci(n):",
        "The quick brown fox jumps over the lazy dog"
    ]
    
    logger.info("\n🧪 Tokenization Examples:")
    for prompt in test_prompts:
        try:
            tokens = tokenizer.encode(prompt)
            decoded = tokenizer.decode(tokens[:10]) + ("..." if len(tokens) > 10 else "")
            logger.info(f"   '{prompt[:30]}{'...' if len(prompt) > 30 else ''}'")
            logger.info(f"     → {len(tokens)} tokens: {tokens[:10]}{'...' if len(tokens) > 10 else ''}")
            logger.info(f"     → decoded: {decoded}")
        except Exception as e:
            logger.warning(f"   Failed to tokenize: {prompt[:30]} - {e}")
    
    # Check model files
    model_dir = Path(model_path)
    model_files = list(model_dir.glob("*.safetensors")) + list(model_dir.glob("*.npz")) + list(model_dir.glob("*.gguf"))
    logger.info(f"\n📦 Model Files: {len(model_files)} weight files")
    for file in model_files:
        size_mb = file.stat().st_size / (1024 * 1024)
        logger.info(f"   {file.name} ({size_mb:.1f} MB)")
    
    # Estimate memory requirements
    total_params = 236_000_000_000  # 236B parameters
    param_size = 0.5  # bytes per parameter for 4-bit quantization
    total_memory_gb = (total_params * param_size) / (1024 ** 3)
    
    logger.info("\n💾 Memory Requirements (Estimated):")
    logger.info(f"   Model size (4-bit): ~{total_memory_gb:.1f} GB")
    logger.info(f"   Inference RAM: ~{total_memory_gb * 1.5:.1f} GB+ (for 128K context)")
    logger.info(f"   GPU VRAM: ~{total_memory_gb:.1f} GB+ (recommended)")
    
    return config, tokenizer

def main():
    parser = argparse.ArgumentParser(description="Analyze DeepSeek-V3.1-4bit model")
    parser.add_argument("--model-path", type=str, default="./deepseek_v3_4bit",
                       help="Path to the downloaded model")
    
    args = parser.parse_args()
    
    if not os.path.exists(args.model_path):
        logger.error(f"Model path does not exist: {args.model_path}")
        return 1
    
    analyze_model(args.model_path)
    return 0

if __name__ == "__main__":
    exit(main())
#```