Virtualization technology is currently becoming increasingly popular and valuable in cloud computing environments due to the benefits of server consolidation, live migration, and resource isolation. Live virtual machine migration is the process of moving virtual machine from one physical host to other without disturbing the users. Effective migration of virtual machine requires the movement of ...

Load balancing is a critical issue for achieving good performance in parallel and distributed systems. However, this issue is neglected in the research area of software DSMs in the past decade. Based on the observation that scienti c applications can be classi ed into two categories: iterative and non-iterative, we propose two dynamic scheduling schemes for these two cases respectively in this ...

OBJECTIVES This paper investigates the radial deformation load of an aortic endoluminal prosthesis and determines the longitudinal load required to cause migration in a human cadaveric aorta of the endoprosthesis. DESIGN AND METHODS The endovascular prosthesis under investigation was a 24 mm diameter, nitinol, self-expanding aortoaortic device (InterVascular, Clearwater, Florida, U.S.A.). Ini...

This paper examines load sharing in a network of workstations (NOW). It proposes a special load sharing method referred to as epoch load sharing. With this policy, load is evenly distributed among workstations with job migration only at the end of predefined intervals. The time interval between successive load sharing is called an epoch. We compare the performance of epoch load sharing with oth...

In most HIV-positive individuals, infection time is only known to lie between the time an individual started being at risk for HIV and diagnosis time. However, a more accurate estimate of infection time is very important in certain cases. For example, one of the objectives of the Advancing Migrant Access to Health Services in Europe (aMASE) study was to determine if HIV-positive migrants, diagn...

In inter-datacenter elastic optical networks, multi-controller deployment is adopted to improve the stability and scalability of control plane. As network scale increases, traditional scheme ignores dynamic characteristics traffic, resulting in unbalanced load among multiple controllers. response this problem, existing switch migration mechanism proposed achieve balanced distribution loads. How...

When data are uniformly distributed, parallel hash-based join algorithm scales up well. However, the presence of data skew can cause load imbalance among the processors, significantly deteriorating its performance. In this paper we propose a dynamic skew handling algorithm which deals with this load imbalance, by detecting and handling join product skews at run-time. The idea is to monitor the ...

Early experiments in migrating task images from one node in a metacomputing environment to another have shown, that it is possible to achieve almost maximum data throughput in LAN networks. With WAN-connected metacomputers however, the time spent in the task migration is not negligible. Here, alternative routing paths must be used concurrently to reduce the total migration time. We present a pr...

Grid computing has emerged as a promising alternative to increase the capacity of processing and storage. It is an aggregation of dynamic, heterogeneous, and widely distributed resources, shared among different institutions. In order to provide load balancing and support for non-dedicated machines, the Grid middleware must be able to move computations among its nodes. This paper describes a tra...

The paper shows how to use Extremal Optimization in load balancing of distributed applications executed in clusters of multicore processors interconnected by a message passing network. Composed of iterative optimization phases which improve program task placement on processors, the proposed load balancing method discovers dynamically the candidates for migration with the use of an Extremal Opti...