Ubuntu 20.02LTS 填坑实录

1.Ubuntu启动时如何显示或隐藏启动消息？ https://qastack.cn/ubuntu/248/how-can-i-show-or-hide-boot-messages-when-ubuntu-starts
2.cuda版本查看 https://blog.csdn.net/qq\_41368074/article/details/107785536
3.cudnn安装 https://blog.csdn.net/weixin\_44002829/article/details/111500287

注：在运行demon前需安装freeimage库 sudo apt-get install libfreeimage3 libfreeimage-dev

cli连接wifi: https://ubuntu.com/core/docs/networkmanager/configure-wifi-connections
cuda测试程序（自用）

#include <cstdio>

__global__ void test()
{
    printf("%d\n", threadIdx.x);
}

int main()
{
    test <<<1, 1>>>();
    cudaDeviceSynchronize();
    auto last_err = cudaGetLastError();
    if (last_err != cudaSuccess)
    {
        char s[200];
        sprintf(s, "CUDA error %s", cudaGetErrorString(last_err));
        printf("%s\n", s);
        exit(1);
    }
    return 0;
}