The possibility of rdma communication between windows and linux and the ibping tests error

Infrastructure & Networking Adapters and Cables Ethernet Adapter Cards
1

It’s my first time trying to set up a RDMA（RoCEv2 mainly) test environment with ConnectX-5 Cards.
I now have several questions about how to use and config the cards.Questions are listed following.

  1. Is RDMA communication available between Windows using Network Direct and Linux using rdma-core(InfiniBand verbs.)?
    I made some research in early 2023 finding that communication between windows and linux is possible, mainly according to :
  1. I have 1 connectx-5 EN card (MCX512A-ACAT）inserted in my pc and i have installed the driver NVIDIA MLNX_OFED 23.07 on ubuntu 22.04.
    When trying to make ibping test, i failed to run the ibping test because fail to open port and the ibdiagnet command found an error saying “Failed to initialize - Failed to set port of ibis object, err=No viable ports found in the system”.
    I wonder why the error occurred?Maybe the reason is that my card supports ethernet only?
2

Hello,

  1. Is it possible to run RDMA between Linux and Windows only when both sides are set to Ethernet (not Infiniband). And then you can use the nd_rping as written in the following community:
    RDMA/RoCE traffic between Linux and Windows

  2. ibping is not working on Eth/RoCE. The tool used for IB only. Same for ibdiagnet or any other tool which is part of the IB utils package.

Best Regards,
Viki

3

Hi @vikiz ,
I noticed that the built-in nd_rping.exe (installed by WinOF-2) in Windows and rping in Linux could communicate with each other, but the github microsoft/NetworkDirect provided nd_rping.exe couldn’t communicate with rping in Linux. Where can I find the source code for nd_rping.exe provided with WinOF-2 driver?