This article serves as the preface to the May 2007 issue of" Concurrency &
Computation: Practice & Experience," a special issued dedicated to the concept of …

Recent studies have found cloud environments increasingly appealing for executing HPC
applications, including tightly coupled parallel simulations. While public clouds offer elastic …

Virtual organization clusters are systems comprised of virtual machines that provide
dedicated computing clusters for each individual virtual organization. The design of these …

High performance computers are typified by cluster machines constructed from multicore
nodes and using high performance interconnects like Infiniband. Virtualizing such'capacity …

Virtual Organization Clusters (VOCs) are a novel mechanism for overlaying dedicated
private cluster systems on existing grid infrastructures. VOCs provide customized …

One of efficient ways to conduct experiments on HPC platforms is to create custom virtual
computing environments tailored to the requirements of users and their applications. In this …

We present a performance study of a virtualized cluster based on the virtualization system
KVM. We show benchmark results from the High Performance Computing Challenge …

Nowadays supercomputer centers strive to provide their computational resources as
services, however, present infrastructure is not particularly suited for such a use. First of all …

Virtualization technologies enable flexible ways to configure computing environment
according to the needs of particular applications. Combined with software defined …

Science gateway users will want to construct, share, execute and monitor sequence of tasks
executing on their local workstations to high-end grid-enabled compute resources. Typically …