Browsing by Subject "grid"

Now showing 1 - 8 of 8

Access status: Open Access ,
Analysis of series of measurements from job-centric monitoring by statistical functions
(Wydawnictwa AGH, 2017) Hilbrich, Marcus; Frank, Markus
The rising number of executed programs (jobs) enabled by the growing amount of available resources from Clouds, Grids, and HPC (for example) has resulted in an enormous number of jobs. Nowadays, most of the executed jobs are mainly unobserved, so unusual behavior, non-optimal resource usage, and silent faults are not systematically searched and analyzed. Job-centric monitoring enables permanent job observation and, thus, enables the analysis of monitoring data. In this paper, we show how statistic functions can be used to analyze job-centric monitoring data and how the methods compare to more-complex analysis methods. Additionally, we present the usefulness of job-centric monitoring based on practical experiences.
Access status: Open Access ,
Circle formation by asynchronous opaque robots on infinite grid
(Wydawnictwa AGH, 2021) Adhikary, Ranendu; Kundu, Manash Kumar; Sau, Buddhadeb
This paper presents a distributed algorithm for the Circle Formation problem under the infinite grid environment by asynchronous mobile opaque robots. Initially, all of the robots acquire distinct positions, and they must form a circle over the grid. The movements of the robots are only restricted along the grid lines, they do not share any global coordinate system. The robots are controlled by an asynchronous adversarial scheduler that operates in Look-Compute-Move cycles. The robots are indistinguishable by their nature, and they do not have any memory of their past configurations nor previous actions. We consider the problem under a luminous model, where robots communicate via lights, other than that, they do not have any external communication systems. Our protocol solves the Circle Formation problem using seven colors. A subroutine of our algorithm also solves the Line Formation problem using three colors.
Access status: Open Access ,
Design and implementation of the Mobile Grid Resource Management System
(Wydawnictwa AGH, 2012) Filippidis, Christos; Cotronis, Yiannis; Markou, Christos
We present a design of a Mobile Grid Resource Management System aimed at integrating mobile resources to an existing Grid infrastructure, while creating a platform for interoperability with telecommunications providers. In order to reduce the load on an existing infrastructure, we separate responsibilities and run additional features on mobile resources. Finally we present the Ikaros-EG implementation, IkarosM android application and the mobile-Grid concept.The system used for our implementation was the NCSR "Demokritos" ZEUS computer Cluster, where the Ikaros-EG framework consisting of a meta-data collector and the Ikaros-EG plug-in has been installed. The ZEUS cluster has local and Grid access to data and meta-data from numerous scientific experiments. Our objective was to incorporate the mobile resources using the NCSR Demokritos campus wireless infrastructure in order to run applications concerning accounting, statistics, or further data/meta-data formatting.
Access status: Open Access ,
Identifying limits of scalability in distributed, heterogeneous, layer based monitoring concepts like SLAte
(Wydawnictwa AGH, 2012) Hilbrich, Marcus; Müller-Pfefferkorn, Ralph
In this paper we present the concept of a scalable job centric monitoring infrastructure. The overall performance of this distributed, layer based architecture called SLAte can be increased by installing additional servers to adapt to the demands of the monitored resources and users. Another important aspect is to offer a uniform global view on all data which are stored distributed to provide an easy access for users or visualisation tools. Additionally we discuss the impact of these uniform access layer on scalability.
Access status: Open Access ,
Modular fem framework »ModFEM« for generic scientific parallel simulations
(Wydawnictwa AGH, 2013) Michalik, Kazmimierz; Banaś, Krzysztof; Płaszewski, Przemysław; Cybułka, Paweł
We present the design for, and implementation of, aflexible and robust parallel modular finite element (FEM) framework called ModFEM. The designis based on reusable modules which use narrow and well-defined interfaces to cooperate. At the top of the architecture, there are problem - dependent modules. Problem - dependent modules can be additionally grouped together by »super-modules«. The structure allows for reusing the sequential code for parallel environments, and also supports solving multi-physics and multi-scale problems.
Access status: Open Access ,
Possible use of Voxler and MicroSation I/MINE programs in surveying
(2010) Lewińska, Paulina
This article revolves around two new programs. Voxler published by Golden Software and I/MINE an expansion to Bentleys MicroSation. It shoves the use of bought products in survey, visualizations and analyses. The similarities and differences between the key options of both programs and final effects are shown clearly. The main focus of this article is on ways of imputing gathered data, grid options, visualization, editing 3D images and in case of I/MINE analysis. There are given some examples of the above. The final conclusion is that I/MINE can be far more useful in survey purposes. It gives a wider range of options, analysis and is much more user friendly.
Access status: Open Access ,
The extension of TORQUE scheduler allowing the use of planning and optimization in grids
(Wydawnictwa AGH, 2012) Chlumský, Václav; Klusáček, Dalibor; Ruda, Mirosław
In this work we present a major extension of the open source TORQUE Resource Manager system. We have replaced a naive scheduler provided in the TORQUE distribution with complex scheduling system that allows to plan job execution ahead and predict the behavior of the system. It is based on the application of job schedule, which represents the job's execution plan. Such a functionality is very useful as the plan can be used by the users to see when and where their jobs will be executed. Moreover, created plans can be easily evaluated in order to identify possible inefficiencies. Then, repair actions can be taken immediately and the inefficiencies can be fixed, producing better schedules with respect to considered criteria.
Access status: Open Access ,
The use of standards in HELIO
(Wydawnictwa AGH, 2012) Pierantoni, Gabriele; Coghlan, B.; Kenny, Eamonn
HELIO [8] is a project funded under the FP7 program for the discovery and analysis of data for heliophysics. During its development, standards and common frameworks were adopted in three main areas of the project: query services, processing services, and the security infrastructure. After a first, proprietary implementation of the security service, it was suggested moving it to a standard security framework to simplify the enforcement of security on the different sites. As the HELIO front end is built with Spring and the TAVERNA server (HELIO workflow engine) has a security framework compatible with Spring, it has been decided to move the CIS in Spring security [2]. HELIO has two different processing services: one is a generic processing service called HELIO Processing Services (HPS), the other is called Context Service (CTX) and it runs specific IDL procedures. The CTX implements the UWS [4] interface from the IVOA [5], a standard interface for job submission used in the helio and astrophysics community. In its final release, the HPS will expose an UWS compliant interface. Finally, some of the HELIO services perform queries, to simplify the implementation and usage of this services a single query interface (the HELIO Query Interface) has been designed for all these services. The use of these solutions for security, execution, and query allows for easier implementation of the original HELIO architecture and for a simpler deployment of the services.