Software and Hardware for Distributed Systems and Supercomputers

Article # 4_2015

11 p.

PDF

Mishchenko P., Gubarev V.
The distributed computer system for training specialists of high performance computing

The paper presents a software system aimed at finding best (in some sense) parameters of an algorithm. The system handles both discrete and continuous parameters and employs massive parallelism offered by public clouds. The paper presents an overview of the system, a method to measure algorithm’s performance in the cloud and numerical results of system’s use on several problem sets. (in Russian).

Key words: algorithmic parameter optimization, parameter tuning, cloud computing.

article citation

DOI

https://doi.org/10.25209/2079-3316-2015-6-1-39-49

Article # 6_2015

11 p.

PDF

Vorobiev V, Ryzhkov S.R,, Fatkieva R.R.
Cloud computing security perimeter

Abstract concept of cloud data sealing by means of determinable policies is proposed. Use of TPM crypto modules for creation of trusted server platforms within the cloud is described. Generalized geo tagging scheme is presented. (In Russian).

Key words: cloud, cloud computing, security perimeter, geo tagging.

article citation

DOI

https://doi.org/10.25209/2079-3316-2015-6-1-61-71

Article # 9_2015

10 p.

PDF

Nepejvoda N., Khatkevich M., Tsvetkov A.
Rational agents as probabilistic automata

A notion of intellectual or rational agent is poorly defined. Its precise specialization is defined here to deal with very large data bases (VLDB). A rational agent is considered as a probabilistic automate inside of system of such automates. The notion of feeling is introduced to affect probabilities and to grant adaptive behavior. Centralized and collectivist control methods are considered. (In Russian).

Key words: VLDB, database, probabilistic automata, rational agents, multi-agent environment.

article citation

DOI

https://doi.org/10.25209/2079-3316-2015-6-1-99-108

Article # 12_2015

11 p.

PDF

Kuznetsov A.
On the cryptographic security of the “BotikKey” authentication protocol against attacks on MD5 hash function

In this paper vulnerabilities of the BotikKey network protocol are described. It is being used in the “Botik” telecommunication system of Pereslavl-Zalesskiy for secure subscribers’ authentication. Protocol was developed as part of Botik-technologies initiative, according to which all software and hardware is based on open source, or on the inhouse developments. We outline the purpose and implementation details of the protocol and its pros and cons. It is pointed out that majority of the protocol’s vulnerabilities arise from the weaknesses of MD5 cryptographic hash function being used. With a number of assumptions, the BotikKey protocol can be compromised by committing an APOP-attack on a subscriber. It is noted that “Botik” network service provider should use contemporary cryptographic methods for subscribers’ authentication or avoid using the BotikKey system at all. (In Russian).

Key words: BotikKey protocol, secure authentication, cryptography, MD5 hash function, APOP attack.

article citation

DOI

https://doi.org/10.25209/2079-3316-2015-6-1-135-145

Article # 14_2015

18 p.

PDF

Spitsina A., Orlov Yu., Podkolodnaya N., Svichkarev A., Dergilev A., Ming Chen, Kuchin N., Chernykh I., Glinskij B.
Supercomputer analysis of genomics and transcriptomics data revealed by high-throughput DNA sequencing

Development of high-throughput DNA sequencing technologies lead to new classes of bulk genomic data and consequent development of specialized algorithms and software. Supercomputing is necessary tool to deal with modern genetics data.
We present technical problems related to gene expression analysis, genomics and transcriptomics data, as well as sequencing technologies related to gene expression. Approaches for automatic genome data annotation are discussed. (In Russian).

Key words: Bioinformatics, DNA sequencing, Microarrays, Gene expression regulation, Transcription, Databases.

article citation

DOI

https://doi.org/10.25209/2079-3316-2015-6-1-157-174