IO Coherency / RDMA support

Does the Xavier NX have IO coherency and support RDMA?

The AGX Xavier does:

But the Jetson Nano doesnt:

Hi akmal.ali,

From what I understand now, the Xavier NX is based on the Xavier SoC , so should be possible to support with specific features on same series SoC.

@kayccc So NX supports GPUDirect RDMA?

I’m guessing the PCI card would have to ensure that its data is formatted correctly for CUDA. Or maybe raw sensor data can be processed directly.

No discussion on what the latency of the translation of user to kernel space etc. I’ll bet moving memory is something linux is very good at and maybe the benefit less than an order of magnitude.

Interesting topic