09/04/2024, 07:42 AM UTC
HotChip2024后记：谈谈加速器互联及ScaleUP为什么不能用RDMAHotChip2024 Postscript: Why RDMA is Inappropriate for ScaleUP Networks
➀ 讨论了在ScaleUP网络中使用RDMA的局限性，强调了延迟、CPU过载和芯片面积限制的问题。 ➁ 探讨了适合ScaleUP的替代协议，强调了以太网和直接内存访问的好处。 ➂ 分析了为AI加速器实现高效互连的挑战和解决方案，重点关注网络融合和内存语义。➀ Discusses the limitations of using RDMA in ScaleUP networks, highlighting issues with latency, CPU overload, and chip area constraints. ➁ Explores alternative protocols suitable for ScaleUP, emphasizing the benefits of Ethernet and direct memory access. ➂ Analyzes the challenges and solutions in implementing efficient interconnects for AI accelerators, focusing on network convergence and memory semantics.
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