You should request access to the beta of the new LabVIEW GPU Analysis Toolkit @ http://www.ni.com/beta. It includes wrappers for the Level 3 BLAS and a GPU SDK to wrap any custom GPU kernels you've created.
What's particularly applicable in your case is that any of the Level 3 BLAS function wrappers can be used to model the wrappers you'd need for Level 1 or Level 2.
You'll also find other useful CUDA functions for managing the device, it's resources, and FFT functions from CUFFT.