Raspberry Pi PCIe Devices

Re:Raspberry Pi PCIe Devices by sitkack on Monday December 28, 2020 @12:29AM (#25556955)

Where do we recommend new PCIe devices for you to test?

Have you tried Mellanox Infiniband and RDMA?

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Re:Raspberry Pi PCIe Devices by geerlingguy on Monday December 28, 2020 @12:37AM (#25556993)

Check out the linked GitHub repo: https://github.com/geerlingguy/raspberry-pi-pcie-devices — for any card I'm actually testing, I have an open issue. For proposals or discussions around a certain topic, there are some ongoing conversations in the Discussions tab.

Specifically concerning Infiniband, check out this issue: https://github.com/geerlingguy/raspberry-pi-pcie-devices/dis... - I'd be willing to test, but currently I have a bit of a backlog of other gear I'm getting through testing :)

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Re:Raspberry Pi PCIe Devices by Namidairo on Monday December 28, 2020 @06:31AM (#25558402)

Wouldn't you saturate the bus fairly easily with a Mellanox card?

I can't imagine the experience would be optimal.

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Re:Raspberry Pi PCIe Devices by geerlingguy on Monday December 28, 2020 @12:59PM (#25561374)

From all my testing, it looks like the maximum throughput you can get on the entire PCIe x1 gen 2 lane on the CM4 is about 3.2-3.4 Gbps.

But that's still better than the current maximum of 1 Gbps over Ethernet, or the ~3 Gbps I have tested through a USB 3.0 card.

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