The heterogeneous many-core system has emerged as a promising developing trend in the high performance computing area.In this paper

we first revealed the developing trend and dominant position of the heterogeneous systems via analyzing their architectures

programming and application characteristics.Secondly

we discussed the programming model and performance optimization of current heterogeneous systems

and summarized the relative research trends.Thirdly

we verified the different application behaviors of the GPU and MIC heterogeneous system by running different types of Benchmark

which provides the reference for user to select the specific heterogeneous computing platform and

the basis of composing the hybrid heterogeneous system which combines the two types of many-core processor(GPU and MIC)into an individual computing node.This hybrid heterogeneous system can fully exploit the computing potential of the two types of many-core coprocessors to coordinate handling the complex application with different application behaviors.Finally

some open issues and future directions in the heterogeneous system were viewed.