This repository implements Speculative Speculative Decoding (SSD), a novel LLM inference algorithm that enables parallel execution of draft and target models on separate hardware. The system provides a complete inference engine with tensor parallelism support, optimized kernels (FlashInfer, CUDA graphs), and advanced KV caching techniques. It includes benchmarking tools to compare performance against baselines like SGLang and vLLM, and supports both synchronous and asynchronous speculative decoding modes. The codebase is well-structured with clear separation of concerns between model implementations, engine components, and utility functions.