小编sho*_*rty的帖子

我对这个基本的CUDA代码感到烦恼.

我有一个char**平面的2d密码数组,我目前的实现是CUDA只是迭代这个列表并显示密码.但是,当我去显示它们时,我只是得到"(NULL)".我不太清楚为什么会这样.有人可以解释它发生了什么吗？

主要:

char ** pwdAry;
pwdAry = new char *[numberOfPwd];

//pwdAry given some values (flat 2d array layout)
const int pwdArySize = sizeof(pwdAry);    
dim3 grid(gridSize,gridSize);
dim3 block(blockSize,blockSize);

searchKeywordKernel << <grid, block >> >(pwdAry);

return EXIT_SUCCESS;

CUDA:

__global__ void searchKeywordKernel(char **passwordList)
{
    int x = threadIdx.x + blockIdx.x * blockDim.x;
    int y = threadIdx.y + blockIdx.y * blockDim.y;
    int pitch = blockDim.x * gridDim.x;
    int idx = x + y * pitch;
    int tidy = idx / pitch; …