Annual Research Report, 2010-2011

Annual report of collaborative research projects of Old Dominion University faculty and students in partnership with business, industry and government.https://digitalcommons.odu.edu/or_researchreports/1000/thumbnail.jp

Air Force Institute of Technology Research Report 2012

This report summarizes the research activities of the Air Force Institute of Technology’s Graduate School of Engineering and Management. It describes research interests and faculty expertise; lists student theses/dissertations; identifies research sponsors and contributions; and outlines the procedures for contacting the school. Included in the report are: faculty publications, conference presentations, consultations, and funded research projects. Research was conducted in the areas of Aeronautical and Astronautical Engineering, Electrical Engineering and Electro-Optics, Computer Engineering and Computer Science, Systems and Engineering Management, Operational Sciences, Mathematics, Statistics and Engineering Physics

Using Simulation Systems for Decision Support

This chapter describes the use of simulation systems for decision support in support of real operations, which is the most challenging application domain in the discipline of modeling and simulation. To this end, the systems must be integrated as services into the operational infrastructure. To support discovery, selection, and composition of services, they need to be annotated regarding technical, syntactic, semantic, pragmatic, dynamic, and conceptual categories. The systems themselves must be complete and validated. The data must be obtainable, preferably via common protocols shared with the operational infrastructure. Agents and automated forces must produce situation adequate behavior. If these requirements for simulation systems and their annotations are fulfilled, decision support simulation can contribute significantly to the situational awareness up to cognitive levels of the decision maker

Метод описания топологической структуры вычислительных кластеров, основанный на операциях произведений подграфов

Topological structure of communication networks in supercomputers with grow in size and complexity of installation, respectively becomes more difficult. There are many methods to describe it, but such descriptions are cumbersome, which makes them difficult to manipulate. The article proposes an approach to describing the communication environment of a supercomputer, when the communication network is described as a constructor. The elements of the constructor are typical topological structures often found in various computing systems. For this purpose, a language for describing the topological structure has been developed. It based on the operation products of subgraphs. The language is ideologically similar in its principles to the NetML and OMNeT++ languages. Special attention is paid to exceptions in the regularity of networks of real supercomputers; in order to add the possibility of describing this fact, special constructions have been introduced into the language. A library has been developed in the C programming language with purpose to facilitate work with the language intoduced in this article. Also a special wrapper over C library has been written in Python3, which then can be used to visualize graphs described by the language. The expressive power of language has been demonstrated in the description computing clusters: Tianhe-2A, AI Bridging Cloud Infrastructure and Lomonosov-2. The method has been tested and compared with GraphViz DOT it is showed multiple reductions in the Record volume required to save topology for some of the major Top500 systems.Топологическая структура коммуникационных сетей суперкомпьютерных систем при увеличении размера и сложности суперкомпьютеров соответственно усложняется. Для ее описания существует множество методов, однако такие описания являются громоздкими, что усложняет манипулирование ими. В статье предложен подход к описанию коммуникационной среды суперкомпьютера, когда коммуникационная сеть описывается как конструктор, где элементами конструктора являются типовые топологические структуры, часто встречающиеся в различных вычислительных системах. С этой целью разработан язык описания топологической структуры, основанный на операции произведения подграфов. Язык идейно схож в своих принципах с языками NetML и OMNeT++. Отдельное внимание в работе уделяется исключениям в регулярности сетей реальных суперкомпьютеров; с целью добавления возможности описания данного факта в язык внесены специальные конструкции. Для поддержки работы с языком описания разработана библиотека на языке программирования Си и специальная оболочка над ней написанная на языке Python3, которая затем может использоваться для визуализации описываемых языком графов. Выразительная мощность языка была продемонстрирована на описании вычислительных кластеров: Tianhe-2A, AI Bridging Cloud Infrastructure и Ломоносов-2. Метод был проверен и сравнен с GraphViz DOT показано многократное сокращение необходимых объема записи для некоторых крупных систем из Top500

Annual Research Report, 2009-2010

Annual report of collaborative research projects of Old Dominion University faculty and students in partnership with business, industry and governmenthttps://digitalcommons.odu.edu/or_researchreports/1001/thumbnail.jp