Automatsko proširenje i primjena računalnog grozda korištenjem dual-boot principa

The paper presents an innovative and simple way of creating computer clustering and obtaining HPC clusters using computers in the classroom, Ethernet facilities and open source software. Automatic enlarge of a computer cluster is a cost-effective way to increase available computing power. This is achieved by forming a computer cluster from the computers in the classroom. The main aim of this paper is to present a solution that will use existing resources in the computer classroom, for applying complex computer services/jobs under the Linux operating system. The execution of these services/jobs programs is performed at the time when the computing resources are not in used in learning under the Windows operating system. A real-life example of applying computers in dual-boot Windows/Linux work mode along with the developed software application support is presented in a teaching environment. The implementation also includes logistics and support for automatic computer clustering and for service/job programs execution. The primary goal is to use existing resources for useful applications in education in the image programming, simulations and volume rendering.U radu je prikazan inovativan i jednostavan način stvaranja računalnih klastera i dobivanja HPC klastera korištenjem postojećih računala u učionici, Ethernet objekata, i open source softvera. Automatsko oblikovanje računalnog klastera je ekonomičan način da se poveća raspoloživa računalna snaga. To se postiže formiranjem računalnog klastera od postojećih računala u učionici. Glavni cilj ovog rada je prikazati rješenje koja će koristiti postojeće resurse u okruženju računalne učionice za izvođenje složenih računalnih poslova koji zahtjevaju vec´u računalnu snagu pod Linux operativnim sustavom. Izvršenje tih poslova se obavlja u vrijeme kada se računalni resursi ne koriste za obrazovanje pod Windows operativnim sustavom. Prikazan je primjer primjene računala u dual-boot Windows/Linux modu rada uz razvijene originalne programske podrške za aplikacije u obrazovnom okruženju. Provedba također uključuje logistiku i podršku za automatsko klasteriranje računala i izvršavanje poslova. Primarni cilj je iskorištavanje postojećih resursa za korisne aplikacije u obrazovanju primarno u području programiranja slike, simulacije i renderiranja. Rezultati provedenog principa su prikazani

Optimal diagnostic examination for local diagnosis

The paper deals with mesh-connected massively-parallel systems affected by failures. The complexity of a local diagnosis procedure, based on new definitions of the local k-diagnosability and the r-fault-tolerance, is analysed. It depends on distances between individual fault clusters and on fault cluster diameters. In particular cases the minimum distance between fault clusters can be enlarged on the account of the maximum fault cluster diameter, e.g., by merging the two clusters. The criterion function for the optimal diagnostic examination for local diagnosis is proposed

Mapping of a Virtual Computer Structure on Mesh-Connected Computers

This paper presents a criterion for mappings of virtual computer structures on the target computer. It focuses on Cartesian topologies as they are the natural choice for distributed array implementation and are also widely used as computer interconnection networks. A method for optimal mappings is described. The presented criterion can be applied to other topologies as well

A Telemedicine Application: ECG Data from Wireless Body Sensors on a Smartphone

Abstract -The development of information technology and telecommunications has reached a level where its usefulness can be applied for health care needs towards Telemedicine and Telecare. Using the advantages of ICT, in this paper, we propose an application that provides a comfortable option for telemonitoring of the heart activity. We use a wireless bipolar body electrode to record ECG wirelessly coupled with the advantages of existing portable smart devices to display the real-time data from the electrode. Additionally, from three wireless bipolar body electrodes the standard 12-lead ECG can be reconstructed and displayed, and stored for further analyses