Could that be your problem? That looks like it might be.
How can we/I compile the nvidia-peermem driver with Mellanox ib_peer_mem symbols? As an aside (and you might not be the right person to ask): Debian 12.5 has OFED (the Infiniband substrate). NVidia/Mellanox has developed MOFED which is much newer and has much better support for current hardware. E.g. opensm in Debian 12.5 does not work with NDR. The version in MOFED does. MOFED is available for Ubuntu (24.04 LTS). But I strongly prefer to run Debian. It would be great if MOFED were packaged up for Debian. (NVidia has a version of MOFED for Debian. But when I installed it, it uninstalled a lot of packages that I need. Like OpenCV and ROS. So I uninstalled it, cleaned up the mess, and reinstalled all of the standard Debian packages that I need. It would be great if there was a properly packaged version that lived in the Debian ecosystem.) Jeff (http: //engineering.purdue.edu/~qobi)