Matlab and Cuda integration in numerical simulation

Hello ppl ,

I have my code written in matlab for solving the Compressible Navier -Stokes numerically . I recently installed a GPU on my system to accelerate the code. How do i do it ? Should i have to modify my entire code ? The code comprises 10 functions called from a single main function for each iteration. I am okay passing the 70 * 70 matrix to the CUDA by using GPuarray . Everything i defined in matlab is global variables including the 70*70 matrix which gets updated after any change made in the simulation. Any help regarding this will be appreciated .. Thanks in advance