Abstract
Heterogeneous many-core processors become an important trend in high-performance computing area, but their sophisticated architecture greatly complicates the programming and compiling issue. The cost model is an important part of optimizing compilers, which is used to analyze the benefits of various program optimizations. This paper constructs a cost model for SW26010 heterogeneous many-core processor, and proposes a dynamic-static hybrid method to analyze benefit based on this cost model. Then these have been implemented in an automatic parallelizing framework for SW26010. The experimental results show that the cost model and the benefit analysis can filter a large number of non-beneficial parallel loops and the performance of the automatically parallelized programs increases significantly.
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