I am a newbie to CUDA. I don’t quite understand the function cudaMalloc as to why we are typecasting to void**,
so we invoke it as cudaMalloc((void**) &A, size); we are casting address of A to (void**). Am a little confused.
The idea is that you pass cudaMalloc the address of a pointer so that it can modify it:
[codebox]
int *ptr = 0;
void **ptr_to_ptr = &ptr;
cudaMalloc(ptr_to_ptr, sizeof(int));
assert(ptr != 0);
// ptr now points to a segment of device memory
[/codebox]
Thanks a lot! It makes sense