# 🚀 OpenAI GPT OSS Models - Works on Regular GPUs!

Generate synthetic datasets with transparent reasoning using OpenAI's GPT OSS models. **No H100s required** - works on L4, A100, A10G, and even T4 GPUs!

## 🎉 Key Discovery

**The models work on regular datacenter GPUs!** Transformers automatically handles MXFP4 → bf16 conversion, making these models accessible on standard hardware.

## 🌟 Quick Start

### Test Locally (Single Prompt)
```bash
uv run gpt_oss_transformers.py --prompt "Write a haiku about mountains"
```

### Run on HuggingFace Jobs (No GPU Required!)
```bash
# Generate haiku with reasoning (~$1.50/hr on A10G)
hf jobs uv run --flavor a10g-small \
    https://huggingface.co/datasets/uv-scripts/openai-oss/raw/main/gpt_oss_transformers.py \
    --input-dataset davanstrien/haiku_dpo \
    --output-dataset username/haiku-reasoning \
    --prompt-column question \
    --max-samples 50
```

## 💡 What You Get

The models output structured reasoning in separate channels:

**Raw Output**:
```
analysisI need to write a haiku about mountains. Haiku: 5-7-5 syllable structure...
assistantfinalSilent peaks climb high,
Echoing winds trace stone's breath,
Dawn paints them gold bright.
```

**Parsed Dataset**:
```json
{
  "prompt": "Write a haiku about mountains",
  "think": "[Analysis] I need to write a haiku about mountains. Haiku: 5-7-5 syllable structure...",
  "content": "Silent peaks climb high,\nEchoing winds trace stone's breath,\nDawn paints them gold bright.",
  "reasoning_level": "high",
  "model": "openai/gpt-oss-20b"
}
```

## 🖥️ GPU Requirements

### ✅ Confirmed Working GPUs
| GPU | Memory | Status | Notes |
|-----|--------|--------|-------|
| **L4** | 24GB | ✅ Tested | Works perfectly! |
| **A100** | 40/80GB | ✅ Works | Great performance |
| **A10G** | 24GB | ✅ Recommended | Best value at $1.50/hr |
| **T4** | 16GB | ⚠️ Limited | May need 8-bit for 20B |
| **RTX 4090** | 24GB | ✅ Works | Consumer GPU support |

### Memory Requirements
- **20B model**: ~40GB VRAM when dequantized (use A100-40GB or 2xL4)
- **120B model**: ~240GB VRAM when dequantized (use 4xA100-80GB)

## 🎯 Examples

### Creative Writing with Reasoning
```bash
# Process haiku dataset with high reasoning
uv run gpt_oss_transformers.py \
    --input-dataset davanstrien/haiku_dpo \
    --output-dataset my-haiku-reasoning \
    --prompt-column question \
    --reasoning-level high \
    --max-samples 100
```

### Math Problems with Step-by-Step Solutions
```bash
# Generate math solutions with reasoning traces
uv run gpt_oss_transformers.py \
    --input-dataset gsm8k \
    --output-dataset math-with-reasoning \
    --prompt-column question \
    --reasoning-level high
```

### Test Different Reasoning Levels
```bash
# Compare reasoning levels
for level in low medium high; do
    echo "Testing: $level"
    uv run gpt_oss_transformers.py \
        --prompt "Explain gravity to a 5-year-old" \
        --reasoning-level $level \
        --debug
done
```

## 📋 Script Options

| Option | Description | Default |
|--------|-------------|---------|
| `--input-dataset` | HuggingFace dataset to process | - |
| `--output-dataset` | Output dataset name | - |
| `--prompt-column` | Column with prompts | `prompt` |
| `--model-id` | Model to use | `openai/gpt-oss-20b` |
| `--reasoning-level` | Reasoning depth: low/medium/high | `high` |
| `--max-samples` | Limit samples to process | None |
| `--temperature` | Sampling temperature | `0.7` |
| `--max-tokens` | Max tokens to generate | `512` |
| `--prompt` | Single prompt test (skip dataset) | - |
| `--debug` | Show raw model output | `False` |

## 🔧 Technical Details

### Why It Works Without H100s

1. **Automatic MXFP4 Handling**: When your GPU doesn't support MXFP4, you'll see:
   ```
   MXFP4 quantization requires triton >= 3.4.0 and triton_kernels installed, 
   we will default to dequantizing the model to bf16
   ```

2. **No Flash Attention 3 Required**: FA3 needs Hopper architecture, but models work fine without it

3. **Simple Loading**: Just use standard transformers:
   ```python
   model = AutoModelForCausalLM.from_pretrained(
       "openai/gpt-oss-20b",
       torch_dtype=torch.bfloat16,
       device_map="auto"
   )
   ```

### Channel Output Format

The models use a simplified channel format:
- `analysis`: Chain of thought reasoning
- `commentary`: Meta operations (optional)
- `final`: User-facing response

### Reasoning Control

Control reasoning depth via system message:
```python
messages = [
    {
        "role": "system", 
        "content": f"...Reasoning: {level}..."
    },
    {"role": "user", "content": prompt}
]
```

## 🚨 Best Practices

1. **Token Limits**: Use 1000+ tokens for detailed reasoning
2. **Security**: Never expose reasoning channels to end users
3. **Batch Size**: Keep at 1 for memory efficiency
4. **Reasoning Levels**:
   - `low`: Quick responses
   - `medium`: Balanced reasoning
   - `high`: Detailed chain-of-thought

## 🐛 Troubleshooting

### Out of Memory
- Use larger GPU flavor: `--flavor a100-large`
- Reduce batch size to 1
- Try 8-bit quantization for smaller GPUs

### No GPU Available
- Use HuggingFace Jobs (no local GPU needed!)
- Or use cloud instances with GPU support

### Empty Reasoning
- Increase `--max-tokens` to 1500+
- Ensure prompts trigger reasoning

## 📚 References

- [OpenAI Cookbook: GPT OSS](https://cookbook.openai.com/articles/gpt-oss/run-transformers)
- [Model: openai/gpt-oss-20b](https://huggingface.co/openai/gpt-oss-20b)
- [HF Jobs Documentation](https://huggingface.co/docs/hub/spaces-gpu-jobs)

## 🎉 The Bottom Line

**You don't need H100s!** These models work great on regular datacenter GPUs. Just run the script and start generating datasets with transparent reasoning.

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*Last tested: 2025-08-05 on NVIDIA L4 GPUs - Working perfectly!*