This paper studies the load sharing problem among heterogeneous cluster systems. The heterogeneous clusters we consider are time-sharing, and the computers in these clusters have different CPU powers and memory capacities. Load sharing means even workloads among all coordinated computers in the system. As some nodes suffer from high loading, it is necessary to migrate some jobs to the nodes wit...

Recently, cluster computers become a viable and less expensive alternative to multiprocessor systems. However, a serious difficulty in concurrent programming of a cluster computer system is how to deal with scheduling and load balancing of such a system which may consist of heterogeneous computers. Based on the four-tuple DLBM (dynamic load balancing model) which is proposed by other scholars, ...

Today’s cluster computers suffer from slow I/O, which slows down I/O-intensive applications. We show that fast disk I/O can be achieved by operating a parallel file system over fast networks such as Myrinet or Gigabit Ethernet. In this paper, we demonstrate how the ParaStation3 communication system helps speed-up the performance of parallel I/O on clusters using the open source parallel virtual...

background handheld computers play an increasing role in improving healthcare services by making the information available at the point of care. there is not enough evidence regarding the usage of handheld computers by healthcare professionals in developing countries. objectives this study investigated the benefits and barriers of using handheld computers in clinical practice in a developing co...

The paper describes a peer-to-peer distributed-computing platform based on mobile agents. The platform, called yaca, has been built on top of Aglets, a mobile-agent platform written in Java. Next to the client agents, which seek computational resources in a cluster, yaca consists of four agents, who manage the computers within a cluster. (1) The Directory Agent keeps track of the computers belo...

A computer cluster is a group of tightly coupled computers that work together closely so that in many respects they can be viewed as though they are a single computer. The components of a cluster are commonly, but not always, connected to each other through fast local area networks. Clusters are usually deployed to improve performance and/or availability over that provided by a single computer,...

This note describes ParallelKnoppix, a bootable CD that allows creation of a Linux cluster in very little time. An experienced user can create a cluster ready to execute MPI programs in less than 10 minutes. The computers used may be heterogeneous machines, of the IA-32 architecture. When the cluster is shut down, all machines except one are in their original state, and the last can be returned...

Increases in power demand and consumption are very noticeable. This increase presents a number of challenges to the traditional grid systems. Thus, there is need come up with new solution that copes stringent on energy provides better quality, which gives experience end users. how concept smart grids (SG) came light. SGs have been introduced monitor control produced consumed. In addition this, ...

the aim of this study was to describe and find out motivational english language learning strategies through computers among iranian efl learners and find out how learners’ motivations change towards english language learning through computers.the mixed method approach (quantitative and qualitative) was employed in this study. a total of 84 (out of 130) female freshman university learners from ...

Cluster computing has become an essential issue for designing immersive visualization systems. This paradigm employs scalable clusters of commodity computers with much lower costs than would be possible with the high-end, shared memory computers that have been traditionally used for virtual reality purposes. This change in the design of virtual reality systems has caused some development enviro...