MATLAB Parallelize proses

I have a Matlab code that is doing Depth Frist search (DFS) with pruning. I am trying to parallelize this code to run on the GPU. It is a simple sequential proses tree-like structure that can be run individually. I need a Tutor to help me implement it on GPU.

I have the code prepared. I have a Queue that has the work which should be sent to ide clusters.