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Imbalanced process arrival patterns (PAPs) are ubiquitous in many parallel and distributed systems, especially in HPC ones. The collective operations, e.g. in MPI, are designed for equal process arrival times (PATs), and are not optimized for deviations in their appearance. We propose eight new PAP-aware algorithms for the scatter and gather operations. They are binomial or linear tree adaptations introducing additional process ordering and (in some cases) additional activities in a special background thread. The solution was implemented using one of the most popular open source MPI compliant library (OpenMPI), and evaluated in a typical HPC environment using a specially developed benchmark as well as a real application: FFT. The experimental results show a significant advantage of the proposed approach over the default OpenMPI implementation, showing good scalability and high performance with the FFT acceleration for the communication run time: 16.7% and for the total application execution time: 3.3%.
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- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach
- Opublikowano w:
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Cluster Computing-The Journal of Networks Software Tools and Applications
nr 23,
strony 2735 - 2751,
ISSN: 1386-7857 - Język:
- angielski
- Rok wydania:
- 2020
- Opis bibliograficzny:
- Proficz J.: Process arrival pattern aware algorithms for acceleration of scatter and gather operations// Cluster Computing-The Journal of Networks Software Tools and Applications -Vol. 23, (2020), s.2735-2751
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1007/s10586-019-03040-x
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 13859 razy