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A comment on Rosetta: The Engine Behind Cray’s Slingshot Exascale-Era Interconnect. Parent comment

Re:Rosetta: The Engine Behind Cray’s Slingshot Exascale-Era ... by gnufx on Wednesday May 06, 2020 @02:40PM (#23094717)
Point taken, but for some time Mellanox has touted at least cross-campus-type IB. I never persuaded anyone to evaluate it for use between two machine rooms, but there were obvious non-HPC cases for it within them. I'd be interested to know how the long distance stuff actually works, not being a beginner with sales talk.
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Re:Rosetta: The Engine Behind Cray’s Slingshot Exascale-Era ... by duxup on Wednesday May 06, 2020 @02:44PM (#23094764)
That's a good question. I haven't used it but extending infinaband ... I'm guessing there's some sort of intermediary devices doing some sort of piplining or emulation, that's usually how that works out.
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