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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vmait</journal-id><journal-title-group><journal-title xml:lang="ru">Computational Mathematics and Information Technologies</journal-title><trans-title-group xml:lang="en"><trans-title>Computational Mathematics and Information Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2587-8999</issn><publisher><publisher-name>Донской государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.23947/2587-8999-2018-2-1-33-43</article-id><article-id custom-type="elpub" pub-id-type="custom">vmait-67</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Анализ структуры задержек в коммутационной среде суперкомпьютера, посредством алгоритмов DBScan и дивизивной кластеризации</article-title><trans-title-group xml:lang="en"><trans-title>Analysis of delays structure of interconnections in supercomputer by means of DBScan and divisive clustering algorithms</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8669-9905</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сальников</surname><given-names>Алексей Николаевич</given-names></name><name name-style="western" xml:lang="en"><surname>Salnikov</surname><given-names>Alexey Nikolaevich</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сальников Алексей Николаевич, Московский государственный университет имени М. В. Ломоносова (119991, г. Москва, Ленинские горы, д. 1), ведущий научный сотрудник, кандидат</p></bio><bio xml:lang="en"><p>Salnikov Alexey Nikolaevich, Lomonosov Moscow State University (Leninskie Gory 1, Moscow, Russian Federation), Senior Researcher, Candidate of Science in Physics and Maths</p></bio><email xlink:type="simple">salnikov@cs.msu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9241-677X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бегаев</surname><given-names>Артур Андреевич</given-names></name><name name-style="western" xml:lang="en"><surname>Begaev</surname><given-names>Artur Andreevich</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бегаев Артур Андреевич, Московский государственный университет имени М. В. Ломоносова (119991, г. Москва, Ленинские горы, д. 1)</p></bio><bio xml:lang="en"><p>Begaev Artur Andreevich, Lomonosov Moscow State University (Leninskie Gory 1, Moscow, Russian Federation)</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1757-556X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Майсурадзе</surname><given-names>Арчил Ивериевич</given-names></name><name name-style="western" xml:lang="en"><surname>Maysuradze</surname><given-names>Archil Iverievich</given-names></name></name-alternatives><bio xml:lang="ru"><p>Майсурадзе Арчил Ивериевич, Московский государственный университет имени М. В. Ломоносова (119991, г. Москва, Ленинские горы, д. 1), доцент, кандидат физико-математических наук</p></bio><bio xml:lang="en"><p>Maysuradze Archil Iverievich, Lomonosov Moscow State University (Leninskie Gory 1, Moscow, Russian Federation), Associate Professor, Candidate of Science in Physics and Maths</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет имени М. В. Ломоносова &#13;
(119991, г. Москва, Ленинские горы, д. 1)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University &#13;
(Leninskie Gory 1, Moscow, Russian Federation)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>28</day><month>03</month><year>2023</year></pub-date><volume>2</volume><issue>1</issue><elocation-id>67</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Сальников А.Н., Бегаев А.А., Майсурадзе А.И., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Сальников А.Н., Бегаев А.А., Майсурадзе А.И.</copyright-holder><copyright-holder xml:lang="en">Salnikov A.N., Begaev A.A., Maysuradze A.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.cmit-journal.ru/jour/article/view/67">https://www.cmit-journal.ru/jour/article/view/67</self-uri><abstract><p>В данной работе предлагается метод оценки и анализа величин задержек в коммуникационной среде вычислительного кластера возникающих при передаче сообщений между парами процессоров «источник-приемник». К данным о задержках, полученным на суперкомпьютерах Bluegene/P, Ломоносов, Ломоносов-2, Juropa применяются 2 метода кластеризации: DBScan и дивизивная (разделяющая) кластеризация. Показано более точное совпадение найденных кластеров методом DBScan к реально существующим особенностям в коммуникационной среде по отношению к методу дивизивной кластеризации. Кластеры объединяются около одинаковых компонентов сетевой инфраструктуры суперкомпьютера. Полученные кластеры были визуализированы в 2-х мерном пространстве специальной утилитой, разработанной авторами.</p></abstract><trans-abstract xml:lang="en"><p>In this paper we propose method for estimating and analysis measurements of delays in the computational cluster interconnection subsystem. Delays are combined into the set of pairs (source, destination). We have measurements of delays extracted by network_test2 utility from interconnections of following supercomputers: BlueGene/P, Lomonosov-1, Lomonosov-2 (Lomonosov MSU) and Jurope (Julich). We have clustered pairs of delays by DBscan and Divisive algorithms. Results of clusterisation revealed that DBScan is more accurate algorithm then divisive and allows to extract clusters, which correspond to the actual features in the supercomputer interconnections. Clusters gather near the same components of supercomputer network infrastructure. Gained clusters were visualized in 2-D by special tool, developed by authors.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>вычислительный кластер</kwd><kwd>алгоритмы кластеризации</kwd><kwd>коммуникационная среда</kwd><kwd>параллельные вычисления</kwd></kwd-group><kwd-group xml:lang="en"><kwd>computing cluster</kwd><kwd>clustering algorithm</kwd><kwd>interconnect</kwd><kwd>parallel computing</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Brian S. Everitt, Landau S., Leese M., Stahl D., Cluster Analysis, 5th edition // Wiley, 2011, pp. 49-53, 84-88, 220 – 222.</mixed-citation><mixed-citation xml:lang="en">Brian S. Everitt, Landau S., Leese M., Stahl D., Cluster Analysis, 5th edition // Wiley, 2011, pp. 49-53, 84-88, 220 – 222.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Charu C. 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