vLLM V1 Engine Architecture Redesign: Zero-Overhead Chunked Prefill & Async Scheduling

The vLLM team has released a major architectural revision for the core execution runtime (vLLM V1).

Key Highlights:

1. Ray-less Core Engine: A lightweight standalone multiprocessing architecture eliminating event-loop stalls.
2. Chunked Prefill Native Integration: Interleaving long prompt computation with token generation cycles to maintain strict p99 time-to-first-token (TTFT) latency SLOs.
3. Hardware-Agnostic FlashAttention-3 & Triton Kernels: Optimized attention kernels on NVIDIA Hopper and Blackwell architectures.