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FatPaths: Routing in Supercomputers and Data Centers when Shortest Paths Fall Short
[article]
2020
arXiv
pre-print
We introduce FatPaths: a simple, generic, and robust routing architecture that enables state-of-the-art low-diameter topologies such as Slim Fly to achieve unprecedented performance. FatPaths targets Ethernet stacks in both HPC supercomputers as well as cloud data centers and clusters. FatPaths exposes and exploits the rich ("fat") diversity of both minimal and non-minimal paths for high-performance multi-pathing. Moreover, FatPaths uses a redesigned "purified" transport layer that removes
arXiv:1906.10885v2
fatcat:b6blvp46gbd6npe3p7c2w4a57a