2018-06-27 · HN #49957117
Homa: A New Transport Protocol Designed to Eliminate TCP’s Short‑Message Latency in AI Clusters
John Ousterhout’s Homa protocol replaces TCP in AI clusters by exposing message lengths, using receiver‑driven grants and hardware priority queues, cutting short‑message P99 latency by roughly 13× while also improving latency for long messages.