Watch a technical conference presentation from HOTI (Hot Interconnects Symposium) exploring an innovative network architecture called Rail-only, designed specifically for training large language models with trillion parameters. Learn about this cost-effective yet high-performance networking solution presented by researchers Weiyang Wang, Manya Ghobadi, Kayvon Shakeri, Ying Zhang and Naader Hasani as part of the Technical Paper Session on Networks for Large Language Models. Discover how this approach addresses the networking challenges in training massive AI models while maintaining efficiency and performance in this 32-minute talk chaired by AMD's Shelby Lockhart.