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agoodthrowaway
on March 7, 2020
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AMD is determined to gets its rightful datacenter ...
How is that possible? Raw Bw of PCIE is around 200Gb/s.
shaklee3
on March 7, 2020
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Pcie4 (of which rome is) can do about 220Gbps realistically per card. Multiple cards, which I'm sure Netflix does, can go higher.
agoodthrowaway
on March 7, 2020
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True but usually it’s difficult to actually achieve that speed on the bus. Isn’t the NIC a bottleneck? Usually they aren’t capable of wirespeed due to shallow buffers.
shaklee3
on March 7, 2020
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It's doable. We do 100Gbps on pcie3, and AMD presented at the dpdk conference last year showing 200gbps:
https://dpdkna2019.sched.com/event/WYAs/dpdk-and-pcie-gen4-b...
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