Problem With 3090 in ubuntu 18.04

(base) root@feisen-KVM:~/NVIDIA_CUDA-11.3_Samples/bin/x86_64/linux/release# ./bandwidthTest
[CUDA Bandwidth Test] - Starting…
Running on…

Device 0: NVIDIA GeForce RTX 3090
Quick Mode

CUDA error at code=46(cudaErrorDevicesUnavailable) “cudaEventCreate(&start)”

I install cuda /driver/pytorch1.10.2 in ubuntu 18.04 with GPU 3090. but i found that the bandwidthTest is failed, and the pytorch can detect the GPU, but Unable wrote data on GPU 3090. what should i do to solve it?