By merging network and channel interfaces, resulting interfaces allow multiple computers to physically share the storage devices in storage area network (SAN). In SAN, computers service local file requests directly from shared storage devices. Direct device access eliminates the server machines as bottlenecks to performance and availability. Communication is unnecessary between computers, since...

the potential of computers to support learning and teaching m almost all subject areas is now widely accepted. at ail levels of education computers aid teachers to enrich their learning/teaching environment. in the field of language education, especially english as a second/foreign language (esl/efl) computer-assisted learning has acted as an indirect boost to enhance language proficiency. whil...

PURPOSE The distributed computing implementation of the EGSnrc Monte Carlo system using a computer cluster is investigated and tested. METHODS The computational performance was tested for various scenarios with different number of computers used in order to assess the efficiency of the cluster. The presented computation times and efficiencies include the linac head modeling with full simulati...

Until recently, computer security was an obscure discipline that seemed to have little relevance to everyday life. With the rapid growth of the Internet, e-commerce, and the widespread use of computers, computer security touches almost all aspects of daily life and all parts of society. Even those who do not use computers have information about them stored on computers. This paper reviews some ...

The application of cluster computer systems has escalated dramatically over the last several years. Driven by a range of applications that need relatively low-cost access to high performance computing systems, clusters computers have reached worldwide use. In this paper we outline the results of using three generations of cluster machines at JPL for a select set of applications drawn from a lar...

The development, application and commercialization of cluster computer systems have escalated dramatically over the last several years. Driven by a range of applications that need relatively low-cost access to high performance computing systems, cluster computers have reached worldwide acceptance and use. A cluster system consists of commercial-off-the-shelf hardware coupled to (generally) open...

Cluster computers are becoming increasingly more common, especially with the increasing use of Beowulf systems, and networks of workstations (NOW) for parallel computing. Nowadays using cost-effective cluster computers to deal with problems which need large computing is a spreading trend. The major source of parallelism in a program is loops. If the loop iterations can be distributed to differe...

By interconnecting high-volume, standard computers, system architects can construct a high-performance, modular, parallel system, called a cluster,1,2 at a much lower cost than a specialized system. In addition, with a standard operating system running on each computer, or node, a cluster can cleanly survive the failure of an individual computer, disk, network, or other subsystem. A cluster can...

Background: Erythroderma is an inflammatory disorder. It has various differential diagnoses, among which one of the most important is mycosis fungoides. Erythroderma itself can be a challenging disorder. Diagnosis of a mycosis fungoides patient presenting with erythroderma specially requires a careful assessment of the peripheral blood. Studies such as CD markers can lead to a more accurate dia...

We describe the CARD (Cluster Administration using Relational Databases) system for monitoring large clusters of cooperating computers. CARD scales both in capacity and in visualization to at least 150 machines, and can in principle scale far beyond that. The architecture is easily extensible to monitor new cluster software and hardware. CARD detects and automatically recovers from common fault...