quantized model inference with cpu/gpu fallback execution
Implements GGUF quantization format enabling efficient inference across heterogeneous hardware. The model weights are stored in INT4 or INT8 quantized format, reducing memory footprint and enabling CPU execution without GPU. The GGUF runtime (llama.cpp) provides automatic hardware detection and fallback logic: if GPU acceleration (CUDA, Metal, Vulkan) is available, it offloads compute kernels; otherwise, it falls back to optimized CPU inference using SIMD instructions. This architecture allows a single model artifact to run on laptops, servers, and edge devices without code changes.
Unique: GGUF quantization combined with llama.cpp's automatic hardware detection enables a single model binary to run efficiently on CPU, GPU, or mixed hardware without code changes. Most quantized models (ONNX, TensorRT) require separate compilation per target hardware; GGUF abstracts this complexity.
vs alternatives: More portable than ONNX (requires per-platform optimization) and faster on CPU than PyTorch quantized models due to llama.cpp's hand-optimized SIMD kernels, while maintaining broader hardware compatibility than TensorRT (GPU-only).