“invalid configuration argument ” error for the call of CUDA kernel?

Question

Here is my code:

int threadNum = BLOCKDIM/8;
dim3 dimBlock(threadNum,threadNum);
int blocks1 = nWidth/threadNum + (nWidth%threadNum == 0 ? 0 : 1);
int blocks         


        

Answer 1

Just to add to the previous answers, you can find the max threads allowed in your code also, so it can run in other devices without hard-coding the number of threads you will use:

struct cudaDeviceProp properties;
cudaGetDeviceProperties(&properties, device);
cout<<"using "<