The presented mixed-message benchmark reports lower short-message P99 and improved large-message latency with Homa

Homa: The End of TCP for AI Clusters — John Ousterhout, Stanford

John Ousterhout

AI inference and agentic workloads shift networking needs from bulk throughput toward small-message latency · Tail latency in synchronization exchanges can stall distributed computation and waste GPU capacity · Incast creates receiver-side switch queues that delay short messages and can trigger packet loss