# llama-cpp-python Prebuilt Wheels for HuggingFace Spaces (Free CPU)

Prebuilt `llama-cpp-python` wheels optimized for HuggingFace Spaces free tier (16GB RAM, 2 vCPU, CPU-only).

## Purpose

These wheels include the latest llama.cpp backend with support for newer model architectures:
- **LFM2 MoE** architecture (32 experts) for LFM2-8B-A1B
- Latest IQ4_XS quantization support
- OpenBLAS CPU acceleration

## Available Wheels

| Wheel File | Python | Platform | llama.cpp | Features |
|------------|--------|----------|-----------|----------|
| `llama_cpp_python-0.3.22-cp310-cp310-linux_x86_64.whl` | 3.10 | Linux x86_64 | Latest (Jan 2026) | LFM2 MoE, IQ4_XS, OpenBLAS |

## Usage

### Setting Up HuggingFace Spaces with Python 3.10

These wheels are built for **Python 3.10**. To use them in HuggingFace Spaces:

**Step 1: Switch to Docker**
1. Go to your Space settings
2. Change "Space SDK" from **Gradio** to **Docker**
3. This enables custom Dockerfile support

**Step 2: Create a Dockerfile with Python 3.10**

Your Dockerfile should start with `python:3.10-slim` as the base image:

```dockerfile
# Use Python 3.10 explicitly (required for these wheels)
FROM python:3.10-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc g++ make cmake git libopenblas-dev \
    && rm -rf /var/lib/apt/lists/*

# Install llama-cpp-python from prebuilt wheel
RUN pip install --no-cache-dir \
    https://huggingface.co/Luigi/llama-cpp-python-wheels-hf-spaces-free-cpu/resolve/main/llama_cpp_python-0.3.22-cp310-cp310-linux_x86_64.whl

# Install other dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY . .

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV GRADIO_SERVER_NAME=0.0.0.0

# Expose Gradio port
EXPOSE 7860

# Run the app
CMD ["python", "app.py"]
```

**Complete Example:** See the template below for a production-ready setup.

### Why Docker SDK?

When you use a custom Dockerfile:
- ✅ Explicit Python version control (`FROM python:3.10-slim`)
- ✅ Full control over system dependencies
- ✅ Can use prebuilt wheels for faster builds
- ✅ No need for `runtime.txt` (Dockerfile takes precedence)

### Dockerfile (Recommended)

```dockerfile
FROM python:3.10-slim

# Install system dependencies for OpenBLAS
RUN apt-get update && apt-get install -y \
    gcc g++ make cmake git libopenblas-dev \
    && rm -rf /var/lib/apt/lists/*

# Install llama-cpp-python from prebuilt wheel (fast)
RUN pip install --no-cache-dir \
    https://huggingface.co/Luigi/llama-cpp-python-wheels-hf-spaces-free-cpu/resolve/main/llama_cpp_python-0.3.22-cp310-cp310-linux_x86_64.whl
```

### With Fallback to Source Build

```dockerfile
# Try prebuilt wheel first, fall back to source build if unavailable
RUN if pip install --no-cache-dir https://huggingface.co/Luigi/llama-cpp-python-wheels-hf-spaces-free-cpu/resolve/main/llama_cpp_python-0.3.22-cp310-cp310-linux_x86_64.whl; then \
    echo "✅ Using prebuilt wheel"; \
    else \
    echo "⚠️  Building from source"; \
    pip install --no-cache-dir git+https://github.com/JamePeng/llama-cpp-python.git@5a0391e8; \
    fi
```

## Why This Fork?

These wheels are built from the **JamePeng/llama-cpp-python** fork (v0.3.22) instead of the official abetlen/llama-cpp-python:

| Repository | Latest Version | llama.cpp | LFM2 MoE Support |
|------------|---------------|-----------|-----------------|
| JamePeng fork | v0.3.22 (Jan 2026) | Latest | ✅ Yes |
| Official (abetlen) | v0.3.16 (Aug 2025) | Outdated | ❌ No |

**Key Difference:** LFM2-8B-A1B requires llama.cpp backend with LFM2 MoE architecture support (added Oct 2025). The official llama-cpp-python hasn't been updated since August 2025.

## Build Configuration

```bash
CMAKE_ARGS="-DGGML_OPENBLAS=ON -DGGML_NATIVE=OFF"
FORCE_CMAKE=1
pip wheel --no-deps git+https://github.com/JamePeng/llama-cpp-python.git@5a0391e8
```

## Supported Models

These wheels enable the following IQ4_XS quantized models:

- **LFM2-8B-A1B** (LiquidAI) - 8.3B params, 1.5B active, MoE with 32 experts
- **Granite-4.0-h-micro** (IBM) - Ultra-fast inference
- **Granite-4.0-h-tiny** (IBM) - Balanced speed/quality
- All standard llama.cpp models (Llama, Gemma, Qwen, etc.)

## Performance

- **Build time savings:** ~4 minutes → 3 seconds (98% faster)
- **Memory footprint:** Fits in 16GB RAM with context up to 8192 tokens
- **CPU acceleration:** OpenBLAS optimized for x86_64

## Limitations

- **CPU-only:** No GPU/CUDA support (optimized for HF Spaces free tier)
- **Platform:** Linux x86_64 only
- **Python:** 3.10 only (matches HF Spaces default)

## License

These wheels include code from:
- [llama-cpp-python](https://github.com/JamePeng/llama-cpp-python) (MIT license)
- [llama.cpp](https://github.com/ggerganov/llama.cpp) (MIT license)

See upstream repositories for full license information.

## Maintenance

Built from: https://github.com/JamePeng/llama-cpp-python/tree/5a0391e8

To rebuild: See `build_wheel.sh` in the main project repository.

## Related

- Main project: [gemma-book-summarizer](https://huggingface.co/spaces/Luigi/gemma-book-summarizer)
- JamePeng fork: https://github.com/JamePeng/llama-cpp-python
- Original project: https://github.com/abetlen/llama-cpp-python