Comment on Designing a Low Latency 10G Ethernet Core (2023)parentComments−mrlongroots11moThe other funny bit is that one-way PCIe latency is 250ns-ish (don't quote me on the exact numbers), which imposes a hard 1us constraint on latency between two hosts.−mgrosvenor11moYou can go quicker with CXL, but not by much.−foobar1000011moThere are always DPUs like NextSilicon, NVidia's Blue*, etc - at under 100 ns of SoF to fast compute though.
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The other funny bit is that one-way PCIe latency is 250ns-ish (don't quote me on the exact numbers), which imposes a hard 1us constraint on latency between two hosts.
You can go quicker with CXL, but not by much.
There are always DPUs like NextSilicon, NVidia's Blue*, etc - at under 100 ns of SoF to fast compute though.