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Model for the evolution of the time profile in optimistic parallel discrete event simulations
Journal of Physics: Conference Series. 2016. Vol. 681. P. 012047-1-012047-6.
We investigate synchronisation aspects of an optimistic algorithm for parallel discrete event simulations (PDES). We present a model for the time evolution in optimistic PDES. This model evaluates the local virtual time profile of the processing elements. We argue that the evolution of the time profile is reminiscent of the surface profile in the directed percolation problem and in unrestricted surface growth. We present results of the simulation of the model and emphasise predictive features of our approach.
Priority areas:
IT and mathematics
Language:
English
Shchur L., Shchur L., Journal of Physics: Conference Series 2015 Vol. 640 P. 012065We extend concept of local simulation times in parallel discrete event simulation (PDES) in order to take into account architecture of the current hardware and software in high-performance computing. We shortly review previous research on the mapping of PDES on physical problems, and emphasise how physical results may help to predict parallel algorithms behaviour.
We extend concept of local simulation times in parallel discrete event simulation (PDES) in order to take into account architecture of the current hardware and software in high-performance computing. We shortly review previous research on the mapping of PDES on physical problems, and emphasise how physical results may help to predict parallel algorithms behaviour. ...
Added: March 8, 2016
L.F. Zhukova, L.N. Shchur, Frontiers in Physics 2024 Vol. 12 Article 1248643
Introduction: The study concerns the properties of a parallel discrete-event simulation (PDES) model, namely a simple mobile network model known as a personal communication service (PCS) model. In this type of parallel computing,
each process has its own computation time, known as local virtual time. The local virtual times change during the simulation process, forming a ...
Added: January 24, 2024
Ziganurova L., Shchur L., Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 2018 Vol. 98 No. 022218 P. 1-15
We examine the question of the influence of sparse long-range communications on the synchronization in parallel discrete event simulations (PDES). We build a model of the evolution of local virtual times (LVT) in a conservative algorithm including several choices of local links. All network realizations belong to the small-world network class. We find that synchronization ...
Added: July 13, 2018
Ziganurova L., Shchur L., Journal of Physics: Conference Series 2021 Vol. 1740 P. 1-8
We investigate the local time evolution in the Personal Communication Service
(PCS) model simulated with the parallel discrete event simulation method's optimistic
algorithm. We propose a model for the optimistic local virtual time evolution (OLVT) in PCS,
which is reminiscent of statistical physics's surface growth. We use Rensselaer's optimistic
simulation system with the Time Warp implementation. We compare the ...
Added: February 19, 2021
Shchur L., Зиганурова Л. Ф., Журнал экспериментальной и теоретической физики 2019 Т. 156 № 4 С. 775-787
Parallel discrete event simulations (PDES) method is one of the most promising methods for the full-scale supercomputing. We report the results of the analysis of the synchronization of processing elements in the course of the simulations using PDES. Amalogyof the evolution of the local time profile of processing elements and the evolution of the surface ...
Added: September 12, 2019
Ziganurova L., Shchur L., Kazan : Kazan Federal University, 2019
We study synchronization aspects in parallel discrete event simulation (PDES) algorithms. Our analysis is based on the recently introduced model of virtual times evolution in an optimistic synchronization algorithm. This model connects synchronization aspects with the properties of the profile of the local virtual times. The main parameter of the model is a “growth rate” ...
Added: October 22, 2019
Ziganurova L., Shchur L., Lecture Notes in Computer Science 2017 Vol. 10421 P. 246-253
We address question of synchronisation in parallel discrete
event simulation (PDES) algorithms. We study synchronisation in conservative
PDES model adding long-range connections between processing
elements. We investigate how fraction of the random long-range connections
in the synchronisation scheme influences the simulation time profile
of PDES. We found that small fraction of random distant connections
enhance synchronisation, namely, the width of the ...
Added: September 18, 2017
М. : МИЭМ НИУ ВШЭ, 2013
The materials of The Second International Scientific – Practical Conference is presented below. The Conference reflects the modern state of innovation in education, science, industry and social-economic sphere, from the standpoint of introducing new information technologies.
Digest of Conference materials is presented in 4 parts. It is interesting for a wide range of researchers, teachers, graduate ...
Added: April 18, 2013
Parkhomenko E., Malova H., Grigorenko E. et al., Physics of Plasmas 2019 Vol. 26 No. 4 P. 1-9
This work is devoted to the investigation of particle acceleration during magnetospheric dipolarizations. A numerical model is presented
taking into account the four scenarios of plasma acceleration that can be realized: (A) total dipolarization with characteristic time scales of
3 min; (B) single peak value of the normal magnetic component Bz occurring on the time scale of ...
Added: April 16, 2019
М. : Национальный исследовательский ядерный университет МИФИ, 2017
Международная молодежная научная школа-конференция «Современные проблемы физики и технологий» в 2017 году посвящена 75-летию Национального исследовательского ядерного университета «МИФИ» и 95-летию академика Н.Г. Басова. Международные молодежные научные школы-конференции «Современ- ные проблемы физики и технологий» проходят на базе НИЯУ МИФИ и ФИАН ежегодно. Целью научной школы является привлечение молодых ученых, аспи- рантов, студентов и школьников к ...
Added: May 8, 2017
Samodurov V., Kitaeva M. A., Isaev E. et al., Odessa Astronomical Publications 2013 No. 26/2 P. 311-315
Now a day the task of comparative analysis of sample sources from different astronomical catalogs is becoming very topical for astronomers. It is useful both for the same spectral range data and for their cross-analysis for different spectral ranges. It is also important, that the real data from astronomical instruments is placed on-line. For the ...
Added: December 11, 2013
Barash L., Marshall J., Weigel M. et al., / Cornell University. Series cond-mat "arxiv.org". 2018. No. 1808.04340.
Estimating the density of states of systems with rugged free energy landscapes is a notoriously difficult task of the utmost importance in many areas of physics ranging from spin glasses to biopolymers to quantum computing. Some of the standard approaches suffer from a spurious convergence of the estimates to metastable minima, and these cases are ...
Added: October 17, 2018
Isaev E., Lysakov S., Sukhov R. et al., Odessa Astronomical Publications 2013 No. 26/2 P. 309
Added: December 11, 2013
Zhukova E. I., Malova H. V., V. Yu. Popov et al., Cosmic Research 2017 Vol. 55 No. 6 P. 417-425
This work is devoted to studying the processes of the acceleration of plasma particles in thin current sheets that appear during magnetospheric substorms in the Earth’s magnetosphere tail. A numerical model of magnetic dipolarization accompanied by plasma turbulence has been constructed and studied. The model allows one to investigate the particle acceleration due to the ...
Added: July 19, 2018
Долгопрудный : МФТИ, 2016
Сборник предназначен для широкого круга специалистов, занимаю- щихся проблемами управления и обработки информации, математическо- го и компьютерного моделирования.
Отражены результаты научных исследований, ведущихся в Москов- ском физико-техническом институте (государственном университете) в области вычислительной математики, математической кибернетики, ком- пьютерных и информационных технологий. ...
Added: October 20, 2018
Ratnikov F., Hushchyn M., Курбатов Е. О. et al., Journal of High Energy Physics 2019 Vol. 1904 No. 77 P. 1-16
Heavy Neutral Leptons (HNLs) are hypothetical particles predicted by many extensions of the Standard Model. These particles can, among other things, explain the origin of neutrino masses, generate the observed matter-antimatter asymmetry in the Universe and provide a dark matter candidate.
The SHiP experiment will be able to search for HNLs produced in decays of heavy ...
Added: April 30, 2019
Timofeev A., Morozov I., Stegailov V. et al., Программные системы: теория и приложения 2014 Т. 5 № 1 С. 191-244
Рассматривается подход, позволяющий выявить, для каких задач нужны суперкомпьютеры эксафлопсного класса. Возможности подхода рассмотрены на примерах актуальных задач материаловедения, физики конденсированного вещества и плотной плазмы, для решения которых необходимо атомистическое моделирование на современных и создаваемых в настоящее время суперкомпьютерах. Для каждой задачи проведено соответствие между набором изучаемых явлений и требуемым уровнем быстродействия (числа ядер) вычислительной ...
Added: August 11, 2014
М. : National Instruments Russia, 2017
Содержание сборника составляют доклады с результатами оригинальных исследований и технических решений, ранее не публиковавшиеся. Мы надеемся, что предлагаемый сборник окажется полезным для специалистов, работающих в различных областях науки и техники, для широкого круга преподавателей, аспирантов и студентов ВУЗов, а также для преподавателей средних школ и технических колледжей. ...
Added: May 10, 2017
Zelenyi L., Malova H., Grigorenko E. et al., 2019 Vol. 61 P. 1-12
In this article we aim to highlight the problems related to the structure and stability of the
comparatively thin current sheets that were relatively recently discovered by space missions in
the magnetospheres of the Earth and planets, as well as in the solar wind. These magnetoplasma
structures are universal in collisionless cosmic plasmas and can play a key ...
Added: March 22, 2019
Serkhacheva N., Gainanova, A., Kuz’micheva G. et al., International Journal of Polymer Analysis and Characterization 2015 Vol. 20 No. 8 P. 743-753
This study produced for the first time composites based on polystyrene microspheres with nano-sized titania synthesized by sulfate and sol-gel methods, as well as commercial Hombifine N, Hombikat UV100, and Degussa P25. The starting samples and the composites were characterized by X-ray diffraction, scanning electron microscopy, nitrogen adsorption capacity, and IR spectroscopy. The highest content ...
Added: December 2, 2015
Пенза : ПГУ, 2016
В сборник трудов включены доклады ХХI-го Международного симпозиума «Надежность и качество», проходившего с 23 по 29 мая 2016 г. в городе Пензе.
Рассмотрены актуальные проблемы теории и практики повышения надежности и качества; эффективности внедрения инновационных и информационных технологий в фундаментальных научных и прикладных исследованиях, образовательных и коммуникативных системах и средах, экономике и юриспруденции; методов и средств ...
Added: May 27, 2016
Isaev E.A., Kornilov V.V., Samodurov V.A. et al., Odessa Astronomical Publications 2013 Vol. 26 No. 2 P. 308
Modern astronomical research programs need high-speed data transmission. The problem of the development and modernization of local networks and main channels is discussed. ...
Added: December 11, 2013
Ducomet B., Zlotnik A., Zlotnik I. A., / Cornell University. Series math "arxiv.org". 2013. No. arxiv: 1303.3471.
We consider an initial-boundary value problem for a generalized 2D time-dependent Schrödinger equation on a semi-infinite strip. For the Crank-Nicolson finite-difference scheme with approximate or discrete transparent boundary conditions (TBCs), the Strang-type splitting with respect to the potential is applied. For the resulting method, the uniform in time L2-stability is proved. Due to the ...
Added: March 16, 2013
Morozov I., Norman G. E., Insepov Z. et al., Physical Review Special Topics - Accelerators and Beams 2012 Vol. 15 P. 053501
This paper describes the surface environment of the dense plasma arcs that damage rf accelerators, tokamaks, and other high gradient structures. We simulate the dense, nonideal plasma sheath near a metallic surface using molecular dynamics (MD) to evaluate sheaths in the non-Debye region for high density, low temperature plasmas. We use direct two-component MD simulations ...
Added: October 28, 2013