The well-developed turbomachinery computational fluid dynamics code multi-block aerodynamic prediction (MAP) was solved by data-parallelized computing and implemented on a graphic processing unit(GPU) platform with the help of compute unified device architecture (CUDA) technology.The second-order upwind spatial scheme and the implicit temporal scheme in the original program were retained

while the linear system was solved by implicit iterations.During the test of two turbomachinery examples on a single GPU

a speed-up appeares to be 8.89 times comparing with one central processing unit (CPU) process and 2.39 times comparing with four CPU processes

with no extra deviation induced into the result.