Hello, Currently I''m trying to use CUDA on Xen VM, with Passthrough. After all setting, guest VM can recognize the nvidia graphic card. root@ubuntu:~# lspci | grep NVIDIA 00:05.0 VGA compatible controller: NVIDIA Corporation Device 1180 (rev a1) 00:06.0 Audio device: NVIDIA Corporation Device 0e0a (rev a1) However, for running CUDA, it shows an error message. root@ubuntu:~# nvidia-smi NVIDIA: could not open the device file /dev/nvidia0 (Input/output error). Failed to initialize NVML: Unknown Error root@ubuntu:~# dmesg | tail [60538.989544] NVRM: RmInitAdapter failed! (0x23:0x2f:674) [60538.989551] NVRM: rm_init_adapter(0) failed However, there exist "nvidia" on the module list and nvidia0 on the /dev directory. root@ubuntu:~# lsmod | grep nvidia nvidia 12319300 0 root@ubuntu:~# ls /dev/nvidia* /dev/nvidia0 /dev/nvidiactl Does anyone know the reason? Thank you. Dongjin Kim _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users