This paper analyzes currently available debugging methods,present a progressive debugging by the parallel granularity,which could make full use of our incremental experiences on parallel programming.

Generally there are several ways to improve the performance of parallel program,such as coarse grain parallelism,instruc.

With the continuous development of multi-core processors,the development of the multi-grain parallel H.

Some digital signal processing algorithms have dependence between relatively very small amounts of computations,so partitioning these algorithms across multiple cores needs to exploit fine-grained parallelism.

Nevertheless, evolution of programming model could not suit already boosted multi-core microprocessors which have fine-grained parallel computing ability.