Performance Characterization and Optimization for Intel Xeon Phi Coprocessor

  • Cheng ZhangEmail author
  • Li Liu
  • Ruizhe Li
  • Guangwen YangEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9528)


The Intel Xeon Phi is a many-core accelerator which focuses on the high performance applications. To characterize the performance of the Intel Xeon Phi, a system of dual 8-core Intel Xeon E5-2670 processors is employed as a control platform, and a subset of the PARSEC benchmark suite is selected as the benchmark applications. The first evaluation in this paper shows that the applications on the Intel Xeon Phi is averagely 2.06x slower than on the dual Intel Xeon E5-2670. The further detailed performance characterization quantifies the performance impact of various architecture parameters on the Intel Xeon Phi. To set an example for how to improve the architecture of the Intel Xeon Phi for better performance, the hardware optimization with an additional set of vector processing units is discussed and a simple emulator is developed accordingly. The evaluation results show that this optimization can provide an average speedup of 1.10.


Intel Xeon Phi Parallel architecture Performance characterization Architecture parameters Hardware optimization 



This work is supported in part by the Natural Science Foundation of China (no. 41275098), the National Grand Fundamental Research 973 Program of China (no. 2013CB956603), and the Tsinghua University Initiative Scientific Research Program (no. 20131089356).


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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Department of Computer Science and TechnologyTsinghua UniversityBeijingChina
  2. 2.Center for Earth System ScienceTsinghua UniversityBeijingChina

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