SUMMARY_FIX.md

📋 Summary: Why Response Not Accurate & Solution

🔍 Root Cause Analysis

❌ The Problem

1. Format Mismatch:

   • CodeLlama-Instruct expects: <s>[INST] <<SYS>>...<</SYS>> User [/INST] Response </s>
   • Training used: instruction + EOS + response + EOS (simple format)

2. Model Confusion:

   • Model was trained with wrong format
   • During inference, format doesn't match
   • Result: Model generates unrelated code (Kotlin/Android instead of Verilog)

3. Why It Happened:

   • CodeLlama-Instruct is a chat model, designed for chat template format
   • Simple format confused the model's internal expectations

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✅ Solution Applied

Step 1: Reformatted Dataset ✅

• Created new dataset with CodeLlama chat template format
• Location: datasets/processed/elinnos_fifo_codellama_chat_format.jsonl

Step 2: Split Dataset ✅

• Train: 70 samples (75%)
• Val: 9 samples (10%)
• Test: 15 samples (15%)
• Location: datasets/processed/split_chat_format/

Step 3: Updated Training Script ✅

• Fixed tokenization to handle chat format correctly
• Format: instruction + response + EOS (instruction already has chat template)

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🔄 Next Step: Retrain

You MUST retrain because:

• Old model was trained with wrong format
• Old model won't work correctly
• Need to retrain with chat format

Quick Start:

cd /workspace/ftt/codellama-migration
source /venv/main/bin/activate
bash start_training_chat_format.sh

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📊 Expected Results After Retraining

✅ Model generates Verilog code (not unrelated text)
✅ Model understands the task correctly
✅ Outputs match training data format
✅ Proper code structure (module...endmodule)

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🎯 Key Takeaways

1. CodeLlama-Instruct needs chat template format - Not optional!
2. Format mismatch causes wrong outputs - Model generates unrelated code
3. Must retrain - Can't fix with inference changes alone
4. New dataset is ready - Just need to retrain

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📝 Files Created

• ✅ datasets/processed/elinnos_fifo_codellama_chat_format.jsonl - Reformatted dataset
• ✅ datasets/processed/split_chat_format/ - Split train/val/test
• ✅ start_training_chat_format.sh - Training script
• ✅ RETRAIN_WITH_CHAT_FORMAT.md - Detailed instructions

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Ready to retrain? Run: bash start_training_chat_format.sh