Reflex Engine is a GGUF-native Rust & CUDA inference engine optimized for cold-start latency on serverless GPU platforms, achieving ~456ms process launch to first token on Tesla T4. It compiles all CUDA kernels ahead-of-time to eliminate runtime JIT overhead, making it 3.4x faster than vLLM on real Runpod deployments by minimizing marginal time added beyond platform provisioning delays.
A company building GPU infrastructure for machine learning models describes their five-year evolution from naive ECS containers to Kubernetes-based systems. They detail persistent challenges with cold starts, image loading, and autoscaling, discovering that Knative's design optimized for web traffic couldn't handle their GPU-intensive inference workloads.