Question

I want to reset (set to 0) a buffer of type unsigned int. I don’t know why but for me only the cuMemsetD8-version works. Here is my code:

CUdeviceptr pBuffer;
cuMemAlloc(&pBuffer, sizeof(unsigned int) * 1000);
cuMemsetD32(pBuffer, 0, sizeof(unsigned int) * 1000); // fails with invalid argument (range) error

Answer 1

The third parameter of cuMemsetD32 is the number of elements, not the number of bytes. So
it should be:

CUdeviceptr pBuffer;
cuMemAlloc(&pBuffer, sizeof(unsigned int) * 1000);
cuMemsetD32(pBuffer, 0, 1000);