  Matlab is very widely used in scientific computing, but Matlab computational
efficiency is lower than C language program. In order to improve the computing
speed, some toolbox can use GPU to accelerate the computation. This paper
describes GPU working principle, our experiments and results analysis of
parallel computing by using GPU based on Matlab. Experimental results show that
for parallel operations, GPU computing speed is faster than CPU, for the
logical instructions, GPU computing speed is slower than CPU.
