Optimization of the coherence function estimation for multi-core central processing unit

Alexander G. Cheremnov, V. A. Faerman, V. S. Avramchuk

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The paper considers use of parallel processing on multi-core central processing unit for optimization of the coherence function evaluation arising in digital signal processing. Coherence function along with other methods of spectral analysis is commonly used for vibration diagnosis of rotating machinery and its particular nodes. An algorithm is given for the function evaluation for signals represented with digital samples. The algorithm is analyzed for its software implementation and computational problems. Optimization measures are described, including algorithmic, architecture and compiler optimization, their results are assessed for multi-core processors from different manufacturers. Thus, speeding-up of the parallel execution with respect to sequential execution was studied and results are presented for Intel Core i7-4720HQ I AMD FX-9590 processors. The results show comparatively high efficiency of the optimization measures taken. In particular, acceleration indicators and average CPU utilization have been significantly improved, showing high degree of parallelism of the constructed calculating functions. The developed software underwent state registration and will be used as a part of a software and hardware solution for rotating machinery fault diagnosis and pipeline leak location with acoustic correlation method.

Original languageEnglish
Article number012020
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 1 Mar 2017
Event10th International Conference on Mechanical Engineering, Automation and Control Systems 2016, MEACS 2016 - Tomsk, Russian Federation
Duration: 27 Oct 201629 Oct 2016

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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