cublas setmatrix

hi everyone,

im kinda new to this so could someone just tell me if setmatrix is simply a wrapper around cuMemcpyHtoD?? or is it more to do with cuMemcpy2D?

i honestly dont get the difference between the two because dont you usually store a matrix as rows appended?

i.e. a matrix like:

2 3
4 5

in host memory atleast would get stored like: 2 3 4 5

how is cuMemcpy2D different?

any comments?