Public bug reported: Without nvidia-modprobe installed, attempting to profile a CUDA executable using nvprof as a normal user fails with: ======== Error: unified memory profiling failed.
After installing nvidia-modprobe, profiling succeeds. After rebooting, with or without nvidia-modprobe installed: $ lsmod | grep nv nvidia_uvm 757760 0 nvidia_drm 40960 5 nvidia_modeset 1110016 7 nvidia_drm nvidia 14340096 386 nvidia_modeset,nvidia_uvm drm_kms_helper 167936 1 nvidia_drm drm 401408 8 nvidia_drm,drm_kms_helper ipmi_msghandler 53248 2 nvidia,ipmi_devintf ls -l /dev/nv* crw-rw-rw- 1 root root 195, 0 Apr 29 10:16 /dev/nvidia0 crw-rw-rw- 1 root root 195, 255 Apr 29 10:16 /dev/nvidiactl crw-rw-rw- 1 root root 195, 254 Apr 29 10:16 /dev/nvidia-modeset crw-rw-rw- 1 root root 241, 0 Apr 29 10:16 /dev/nvidia-uvm With nvidia-modprobe installed, after successfully running nvprof: $ lsmod | grep nv nvidia_uvm 757760 0 nvidia_drm 40960 5 nvidia_modeset 1110016 7 nvidia_drm nvidia 14340096 389 nvidia_modeset,nvidia_uvm drm_kms_helper 167936 1 nvidia_drm drm 401408 8 nvidia_drm,drm_kms_helper ipmi_msghandler 53248 2 nvidia,ipmi_devintf $ ls -l /dev/nv* crw-rw-rw- 1 root root 195, 0 Apr 29 10:45 /dev/nvidia0 crw-rw-rw- 1 root root 195, 255 Apr 29 10:45 /dev/nvidiactl crw-rw-rw- 1 root root 195, 254 Apr 29 10:45 /dev/nvidia-modeset crw-rw-rw- 1 root root 241, 0 Apr 29 10:45 /dev/nvidia-uvm crw-rw-rw- 1 root root 241, 1 Apr 29 10:56 /dev/nvidia-uvm-tools See also: https://bugs.launchpad.net/ubuntu/+source/nvidia-modprobe/+bug/1421209/comments/4 https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-352/+bug/1540896 ** Affects: nvidia-graphics-drivers-390 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767777 Title: Needs udev rule to create /dev/nvidia-uvm-tools device node To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/+bug/1767777/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
