Doubt about GPUDirect and PCI-EP

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
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1

Hi there!

I’m working on a system with an FPGA-based device and 2 Jetsons. Considering the JETSON 0 as RC of the PCIe architecture. It would be possible to do a Direct Memory Access (DMA) from FPGA to Jetson 1 (Endpoint)?

I would like to write a buffer data present in Jetson 1 with the FPGA writing the data through the PCIe communication, however, that pcie architecture has the Jetson 0 as Root Complex. Is there any issue in this architecture? Is the GPUDirect RDMA compatible with the Jetson configured as Endpoint?

I would like to have a pcie switch between there, is it a problem? The documentation isn’t clear about the switch compatibility.

3

Hi,

We need to double-check with our internal team.

It is important to note that the FPGA driver prepares the memory buffer via CUDA and controls the FPGA DMA for data transfer.
Therefore, it is essential to ensure that the FPGA can implement this.

Thanks.