Параллельные вычислительные технологии (ПаВТ-2016). X международная научная конференция.
"Parallel Computing Technologies (PaVT) 2016" - an international scientific conference, the tenth in a series of annual conferences devoted to the development and application of parallel computing technologies in various fields of science and technology. The main purpose of the conference - to provide an opportunity to discuss the prospects for the development of parallel computing technology and presentation of the results obtained by leading research groups in the use of supercomputer technologies for solving problems in science and technology. Organizers: Federal Agency of Russian scientific organizations, Supercomputing Consortium of Russian Universities. Conference topics cover all aspects of the application of high performance computing in science and technology, including applications, hardware and software, specialized languages and packages. Proceedings PaVT 2016 indexed in the bibliographic database Scopus.
Rassmatrivaetsya realizaciya programmnogo instrumentariya dlya vyra-botki ehffektivnyh strategij preobrazovaniya predstavlenij infor-macionnyh grafov algoritmov s cel'yu kak vyyavleniya skrytogo pa-rallelizma, tak i opredeleniya racional'nogo plana (raspisaniya) vy-polneniya parallel'nyh chastej programm pri uchete ogranichenij re-al'nyh mnogoprocessornyh vychislitel'nyh sistem. Dlya dostizheniya gibkosti razrabotki scenariev preobrazovanij predstavlenij grafa ispol'zuetsya vstroennyj skriptovyj yazyk Lua.
We present an approach for the realization of classical problem of computations – multidimensional integration by Monte Carlo methods. This method widely using in many areas, from oil and gas production to economy. Using SIMD and CUDA architecture improves drastically computations. We provide details of the testing on the Russian powerful supercomputer “Lomonosov” effectively using 3000 GPUs.
Aspects of Development and Creation of Cluster Computing Systems Aladyshev O.S., Vdovikin O.I., Ovsyannikov A.P., Opalev V.M., Telegin P.N., Shabanov B.M. The aspects necessary for designing and creating clusters have been considered.
This issue is the collection of the papers based on the talks presented at the extended workshop “Methods of simulations on supercomputers”, which was held at 17–19 November 2014, in Tarusa hotel Interkosmos of the RAS Space Research Institute. It is the Conference in the series of extended workshops and conferences, devoted to the computer technologies in natural sciences.
Nowadays, the wide spectrum of Intel Xeon processors is available. The new Zen CPU architecture developed by AMD has extended the number of options for x86_64 HPC hardware. This large number of options makes the optimal CPU choice for HPC systems not a straightforward procedure. Such a co-design procedure should follow the requests from the end-users community. Modern computational materials science studies are among the major consumers of HPC resources worldwide. The VASP code is perhaps the most popular tool for these research. In this work, we discuss the benchmark metric and results based on a VASP test model that give us the possibility to compare different CPUs and to select best options with respect to time-to-solution and energy-to-solution criteria.
This book is collection of research papers included in the program of the International Scientific Conference "Parallel Computing Technologies 2016". The conference was held from 28 March to 1 April 2016 the Northern (Arctic) Federal University (Arkhangelsk). For more information about the conference can be found on the Internet at the following address http://agora.guru.ru/pavt.
Software analysis is becoming increasingly important as a way of software quality assurance. Most works in this area focus their attention on a single machine scenario, when the analysis is run and implemented on a single processing node, as it seems to be a good fit for the current software development methodologies. We argue that in some cases it is reasonable to employ high performance computing (HPC) to do software analysis, if the performance impact is worth the increase in computational requirements. In this paper we present our experience with the implementation of a HPC version of the bounded model checker Borealis, major problems we encountered together with their solutions, and the evaluation results on a number of different real-world projects. © Springer International Publishing AG 2018.
This book constitutes the proceedings of the 13th International Conference on Parallel Computing Technologies, PaCT 2015, held in Petrozavodsk, Russia, during August / September 2015. The 37 full papers and 14 short papers presented were carefully reviewed and selected from 87 submissions. The papers are organized in topical sections on parallel models, algorithms and programming methods; unconventional computing; cellular automata; distributed computing; special processors programming techniques; applications.
A model for organizing cargo transportation between two node stations connected by a railway line which contains a certain number of intermediate stations is considered. The movement of cargo is in one direction. Such a situation may occur, for example, if one of the node stations is located in a region which produce raw material for manufacturing industry located in another region, and there is another node station. The organization of freight traﬃc is performed by means of a number of technologies. These technologies determine the rules for taking on cargo at the initial node station, the rules of interaction between neighboring stations, as well as the rule of distribution of cargo to the ﬁnal node stations. The process of cargo transportation is followed by the set rule of control. For such a model, one must determine possible modes of cargo transportation and describe their properties. This model is described by a ﬁnite-dimensional system of diﬀerential equations with nonlocal linear restrictions. The class of the solution satisfying nonlocal linear restrictions is extremely narrow. It results in the need for the “correct” extension of solutions of a system of diﬀerential equations to a class of quasi-solutions having the distinctive feature of gaps in a countable number of points. It was possible numerically using the Runge–Kutta method of the fourth order to build these quasi-solutions and determine their rate of growth. Let us note that in the technical plan the main complexity consisted in obtaining quasi-solutions satisfying the nonlocal linear restrictions. Furthermore, we investigated the dependence of quasi-solutions and, in particular, sizes of gaps (jumps) of solutions on a number of parameters of the model characterizing a rule of control, technologies for transportation of cargo and intensity of giving of cargo on a node station.
Event logs collected by modern information and technical systems usually contain enough data for automated process models discovery. A variety of algorithms was developed for process models discovery, conformance checking, log to model alignment, comparison of process models, etc., nevertheless a quick analysis of ad-hoc selected parts of a journal still have not get a full-fledged implementation. This paper describes an ROLAP-based method of multidimensional event logs storage for process mining. The result of the analysis of the journal is visualized as directed graph representing the union of all possible event sequences, ranked by their occurrence probability. Our implementation allows the analyst to discover process models for sublogs defined by ad-hoc selection of criteria and value of occurrence probability
The geographic information system (GIS) is based on the first and only Russian Imperial Census of 1897 and the First All-Union Census of the Soviet Union of 1926. The GIS features vector data (shapefiles) of allprovinces of the two states. For the 1897 census, there is information about linguistic, religious, and social estate groups. The part based on the 1926 census features nationality. Both shapefiles include information on gender, rural and urban population. The GIS allows for producing any necessary maps for individual studies of the period which require the administrative boundaries and demographic information.
Existing approaches suggest that IT strategy should be a reflection of business strategy. However, actually organisations do not often follow business strategy even if it is formally declared. In these conditions, IT strategy can be viewed not as a plan, but as an organisational shared view on the role of information systems. This approach generally reflects only a top-down perspective of IT strategy. So, it can be supplemented by a strategic behaviour pattern (i.e., more or less standard response to a changes that is formed as result of previous experience) to implement bottom-up approach. Two components that can help to establish effective reaction regarding new initiatives in IT are proposed here: model of IT-related decision making, and efficiency measurement metric to estimate maturity of business processes and appropriate IT. Usage of proposed tools is demonstrated in practical cases.