Evgeny Ivashko

Evgeny Ivashko
Russian Academy of Sciences | RAS

PhD

About

13
Publications
412
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18
Citations
Introduction
Skills and Expertise

Publications

Publications (13)
Chapter
Desktop Grid is a widely-used high-throughput concept to perform scientific computing. A common Desktop Grid project consists of a large number of tasks which are to be distributed to computing nodes. By its nature a Desktop Grid deals with a number of uncertainties which affect on a project runtime estimation. In this paper we present a linear reg...
Chapter
In this paper a short survey on Desktop Grid and Cloud computing paradigms combination is presented. There are four approaches are considered: (1) extension of a Cloud by Desktop Grid’s nodes; (2) extension of a Desktop Grid by a Cloud nodes; (3) implementation of Cloud services on top of Desktop Grid’s nodes; and (4) implementation of a Desktop Gr...
Chapter
The paper addresses the problem of accelerating the “tail” stage of a computational experiment in a Desktop Grid. We provide the mathematical model of a “tail” stage, describe the setting of simulation experiments and provide their results. Task replication in “tail” phase proves to be efficient in decreasing the duration of “tail” by orders of mag...
Chapter
The paper describes a discrete event simulation model of a Desktop Grid system. Firstly, we present a stochastic model of a volunteer computing project. We then employ the event simulation approach based on the generalized semi-Markov processes to develop a discrete event simulation model. Finally, using the simulation model, we describe a performa...
Chapter
In this paper, we propose an efficient computational scheme for virtual drug screening using a Desktop Grid. The scheme is based on a game-theoretical mathematical model, more precisely a crowding game. The proposed scheme provides needed balance between the results quality and the search scope.
Chapter
This work describes BOINC-based Desktop Grid implementation of adaptive task scheduling algorithm for virtual drug screening. The algorithm bases on a game-theoretical mathematical model where computing nodes act as players. The model allows to adjust the balance between the results retrieval rate and the search space coverage. We present the devel...
Chapter
This paper describes a statistical approach used to estimate batch of tasks completion time in a Desktop Grid. The statistical approach based on Holt model is presented. The results of numerical experiments based on statistics of RakeSearch and LHC@home volunteer computing projects are given.
Article
Full-text available
A regular Desktop Grid bag-of-tasks project can take a lot of time to complete computations. An important part of the process is tail computations: when the number of tasks to perform becomes less than the number of computing nodes. At this stage, a dynamic replication could be used to reduce the time needed to complete computations. In this paper,...
Article
Full-text available
We consider the best-choice problem with disorder and imperfect observation. The decision-maker observes sequentially a known number of i.i.d random variables from a known distribution with the object of choosing the largest. At the random time the distribution law of observations is changed. The random variables cannot be perfectly observed. Each...
Conference Paper
In the paper we describe a web service of access to computing resources of a desktop grid built in the High-performance Data Center of Karelian Research Centre of the RAS. The grid is based on lightweight, highly scalable BOINC platform. We present the architecture of the system, the current results of implementation and plans for the future. We al...
Article
Full-text available
Digital libraries face similar challenges as enterprise information sources and the Internet: a fast growing amount of digital content requires enhanced ways of supporting information seeking. This paper presents an approach to context-based retrieval in Digital Libraries (DLs). The proposed approach includes creation of a profile representing gene...

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Projects

Projects (3)
Project
This project is aimed at developing a job scheduling algorithm to screen large databases so as to ensure high number and diversity of useful results at early steps already.
Archived project
Mathematical model to automatically detect the beginning of copying a large part of a digital library.