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README.md
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license: cc-by-nc-4.0
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---
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license: cc-by-nc-4.0
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datasets:
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- openai/gsm8k
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language:
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- en
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base_model:
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- Qwen/Qwen2.5-Math-1.5B
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pipeline_tag: text-generation
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library_name: transformers
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tags:
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- math
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- qwen
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- lora
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- mathematics
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- gsm8k
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---
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# OpenMath
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Fine-tuning a Small Language Model (SLM) for Step-by-Step Math Reasoning
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## Overview
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OpenMath is an open-source project focused on fine-tuning a small language model for math reasoning using QLoRA (4-bit LoRA).
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This repository contains only a LoRA adapter trained on GSM8K. Users must load the base model separately and attach the adapter.
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The latest version of this model was trained on an AMD MI300X GPU using ROCm, showing that modern non-NVIDIA accelerators can successfully support large-scale fine-tuning with Hugging Face and PyTorch.
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---
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## Base Model
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Qwen/Qwen2.5-Math-1.5B
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This repository does not contain the base model weights — they must be loaded from Hugging Face.
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---
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## Hardware Used (Latest Training Run)
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GPU: AMD MI300X (ROCm 7.0)
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VRAM: 192 GB
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Operating System: Ubuntu 24.04
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Framework: PyTorch + Hugging Face
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Backend: ROCm
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---
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## Dataset
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GSM8K (Grade School Math 8K)
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Training samples: 1,000
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Evaluation: Full GSM8K test split (1,319 problems)
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Only the solution portion of each example was used for loss computation through loss masking.
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---
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## Training Configuration
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Method: QLoRA (4-bit)
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Quantization: NF4 with float16 compute
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LoRA rank: 16
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LoRA alpha: 32
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LoRA dropout: 0.05
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Target modules: q_proj, k_proj, v_proj, o_proj
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Max sequence length: 1024
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Batch size: 1
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Gradient accumulation: 16
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Effective batch size: 16
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Learning rate: 1e-4
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Optimizer: paged_adamw_8bit
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Scheduler: cosine
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Warmup: 5 percent
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Epochs: 6
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---
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## Results
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GSM8K Accuracy (Full Test Set):
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750 out of 1319 correct, which equals 56.86 percent accuracy.
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This is significantly stronger than the earlier Colab T4 run and is a strong result for a 1.5B model trained with LoRA.
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---
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## What This Repository Contains
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adapter_model.safetensors — LoRA weights
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adapter_config.json — LoRA configuration
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chat_template.jinja — chat formatting template
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tokenizer.json — tokenizer file
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tokenizer_config.json — tokenizer settings
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README.md — documentation
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This repository does not include checkpoints, optimizer states, or full base model weights.
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---
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## How to Use This Model
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Load the base model Qwen/Qwen2.5-Math-1.5B from Hugging Face, then attach this LoRA adapter using PEFT. Generate answers using a prompt that includes an instruction, problem, and solution section.
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---
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## Why This Matters
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This project demonstrates that AMD MI300X can train modern language models with Hugging Face and QLoRA.
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It shows that high-quality math reasoning is possible at 1.5B parameters using efficient fine-tuning.
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It provides a lightweight adapter instead of requiring users to download a massive full model.
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---
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## Limitations
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The model can make reasoning mistakes.
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It should not be used for exams, assignments, or professional decisions.
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Performance depends heavily on prompt formatting.
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---
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## Future Work
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Train on 3,000 to 5,000 GSM8K samples.
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Add SVAMP and ASDiv datasets.
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Improve decoding to reduce repetition.
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Experiment with multi-GPU scaling on MI300X.
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Add a Streamlit demo for interactive use.
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---
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## License
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cc-by-nc-4.0
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