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Article title CLOUD SERVICE FOR SOLUTION OF MULTISCALE NANOTECHNOLOGY PROBLEMS ON CLUSTERS AND SUPERCOMPUTERS
Authors M.V. Yakobovskiy, A.A. Bondarenko, A.V. Vyrodov, S.K. Grigoriev, M.A. Kornilina, A.I. Plotnikov, S.V. Polyakov, I.V. Popov, D.V. Puzyrkov, S.A. Soukov
Section SECTION IV. CLOUD COMPUTING
Month, Year 12, 2016 @en
Index UDC 519.687:519.688:519.673:519.63
DOI 10.18522/2311-3103-2016-12-103114
Abstract Nowadays a scientific and technical progress is connected with the solution of topical prob-lems of nanotechnology. A great part of nanotechnology problems is studied the methods of math-ematic modeling with the help of high-performance computers. In recent years such modeling is conducted within the framework of cloud technologies. Created are paid and free cloud services which provide great capabilities for modeling the properties of micro- and nanosystems having perspectives for application in different industries. The cloud service intended for the solution of multi-scale problems of nanotechnology on clusters and supercomputer systems is presented. The need of integration: (a) ideas and knowledge on this applied problem, (b) experts in this scientific field and programmers for the supercomputer systems, (c) various technologies of modeling and a set of packages of applied programs, (d) various computing resources which are available for the authors and its partners, was motivation to creation of the cloud service. The prototype of the cloud environment was realized in the form of the KIAM Multilogin service and the applied software available from virtual machines of users became a result of this work. The first application of created service is the parallel software tool aimed to supercomputer simulations of nonlinear gas-dynamics processes in micro-channels of technical systems. On its example it was a success to investigate problems and define ways of realization of systematic supercomputer calculations of problems of this class. The offered realization of service has allowed: (a) to provide fault-tolerant scale computation of several versions of the task on a set of clusters and supercomputers having different location and architecture; (b) to carry out the detailed analysis of the received numerical results. The developed tools allow performing calculations with minimal user intervention. The data transfer between computer clusters and programs restarting in order to continue the calculation is provided automatically. Both supplementary and resulting data of the running computer system is transferred to the main store in the background mode. Checkpoints are also backed up to all complementary computer systems. Analysis of KIAM Job_Control management environment operation showed that the time loss associated with data transfer between clusters and tasks re-starting decreased by approximately 2.5–3 times compared with manual-controlled operation.

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Keywords Cloud service; virtualization; control of resources; nanotechnology problems; multiscale computer simulation of nonlinear gas-dynamic processes in micro-channels of technical systems.
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