The paper addresses dynamic allocation of objects in a distributed object-oriented (OO for short) programming environment, in particular Parallel Objects (PO for short). Intrinsic dynamicity of OO programming makes it difficult to foresee the behaviour of distributed applications and their consequent need of resources. In the Parallel Objects environment newly created objects are allocated on t...

Cloud computing is the delivers the computing services over the internet. Cloud services help individuals and organization to use data that are managed by third parties or another person at remote locations. Virtual Machine (VM) is an emulation of a particular computer system. In cloud computing, Virtual machine migration is a useful tool for migrating Operating System instances across multiple...

Many parallel applications are highly dynamic in nature. In some, computation and communication patterns change gradually during the run; in others those characteristics change abruptly. Such dynamic applications require an adaptive load balancing strategy. We are exploring an adaptive approach based on multi-partition object-based decomposition, supported by object migration. For many applicat...

We describe a dynamic load-balancing strategy for parallel finite element methods with adaptive mesh (h-) and order (p-) refinement. The load-balancing algorithm is based on the tiling load-balancing system, where global balance is achieved by performing local balancing within overlapping neighborhoods of processors. Tiling is applied to each mesh level created by the adaptive h-refinement. Wei...

In this paper, we derive and investigate approaches to dynamically load balance a distributed task parallel application software. The load balancing strategy is based on task migration. Busy processes export parts of their ready task queue to idle processes. Idle–busy pairs of processes find each other through a random search process that succeeds within a few steps with high probability. We ev...

We investigate the problem of distributing communicating objects across wide-area environments. Our goals are to balance load, minimize network communication, and use resources efficiently. However, applications running in such environments are often dynamic and highly unpredictable. Furthermore, synchronous communication is usually too expensive to be used in disseminating load information. We...

Dynamic load balancing in multicomputers can improve the utilization of processors and the eeciency of parallel computations through migrating workload across processors at runtime. We present a survey and critique of dynamic load balancing strategies that are iterative: workload migration is carried out through transferring processes across nearest neighbor processors. Iterative strategies hav...

In recent years, cloud computing technology has become one of the most significant IT infrastructures. Cloud users are increasing every day; thus, cloud must be able to handle the huge number of requests received at any given moment, causing concerns for resourced load balancing. The load balancing problem occurs when some cloud resources are overloaded with user tasks while other resources are...

Correlate is a concurrent object-oriented language, which supports active objects as a unit of concurrency. In this paper, we discuss the migration of active objects in Correlate. First, we will show that the architecture of the run-time system simplifies the realisation of a migration mechanism that supports active objects, because this particular run-time system has complete control over all ...

Process migration has been used to perform specialized tasks, such as load sharing and checkpoint/restarting long running applications. Implementation typically consists of modifications to existing applications and the creation of specialized support systems, which limit the applicability of the methodology. Off the shelf applications have not benefited from process migration technologies, mai...