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Virtualization technology enables multiple virtual machines(VMs) to run on a physical mechanism. Due to the excessive data-intensive workloads of VMs, the system I/O performance of cloud platforms deteriorates. To improve the system I/O performance, one key technique is to exploit the spatial locality of data stored on the back-end disks. However, identifying data spatial locality on a cloud platform...
One of the major challenges in cloud computing is Resources' allocation. In such environment, the providers and the users have different objectives; providers aim to maximize the revenue by increasing the use of resources, while users want to reduce expenditures and, in the same time, to meet their performance requirements. However, it is very difficult to allocate the resources mutually and to use...
With the number of different cloud providers growing the importance for reliable and up-to-date performance data increases to make qualified decision on what providers to use to carry out different tasks. To cope with this issue, this paper proposes a framework usable for distributed and self-organized continuous benchmarking of hybrid and heterogeneous cloud environments. The framework implements...
Network Virtualization is coming to play the important role in network architecture because there are many flexible resources are available in ICT infrastructure. In this paper, we describe state-of-the-art challenges to be forced in implementing network virtualization functions and several use cases of utilizing network virtualization to get more value than is provided by using existing network architecture...
Software Defined Networking (SDN) is based basically on three features: centralization of the control plane, programmability of network functions and traffic engineering. The network function migration poses interesting problems that we try to expose and solve in this paper. Content Distribution Network virtualization is presented as use case.
Several fields of science have traditionally demanded large-scale workflow support, which requires thousands of CPU cores or more. In this paper, we investigate ways to support these scientific workflows in a heterogeneous environment in which cluster computing resources are integrating with cloud computing resources. Specifically, we first propose an architecture that utilizes cloud resources to...
This paper examines the cloud resources management for a multi-agent IoT architecture. The resources tenancy is a costly operation, thus their allocation and management should be approached in an effective manner. On the other hand, the infrastructure should not be affected by the deployment or maintenance life cycle, operations that could put parts of the system offline, or even the entire system...
Enterprise Cloud Computing (ECC) is a new trend for IT service provisioning due to the concerns of cost down and increase of Quality of Service (QoS). However, there are many obstacles to the services moving from traditional enterprise computing to cloud environment, such as how to assure the quality of services, security, data availability, data privacy, etc. In order to support the risk free migration...
Network I/O virtualization plays an important role in cloud computing. This paper addresses the system-wide virtualization issues of TCP/IP Offload Engine (TOE) and presents the architectural designs. We identify three critical factors that affect the performance of a TOE: I/O virtualization architectures, quality of service (QoS), and virtual machine monitor (VMM) scheduler. In our device emulation...
Cloud Computing is an emerged technology of the domain High Performance Computing and serves the community for getting their services executed over the internet. Cloud Computing has become the most popular distributed computing environment because it does not requires management and controlling on lower level implementation at user level. Rapid growth of the cloud technology pushed numerous educational...
This paper designs an infrastructure to meet the resource requirements, and more importantly, the QoS (quality of service) requirements for networked multimedia services. Learning from the successful experiences of distributed systems, the infrastructure deploys clusters of devices at the edge to improve the probability for end users to get satisfying QoS, and a two-layer management architecture is...
As new technology becomes available, systems increase in complexity, which in turn, raises the expectations of users for new applications that may presumably be more complex. This spiral process requires the usage of appropriate techniques to control complexity such as decoupled design and development paradigms, and communications middleware that facilitate the development of distributed applications...
Virtualized Infrastructures are a promising way for providing flexible and dynamic computing solutions for resource-consuming tasks. Scientific Workflows are one of these kind of tasks, as they need a large amount of computational resources during certain periods of time. To provide the best infrastructure configuration for a workflow it is necessary to explore as many providers as possible taking...
The rise of utility in cloud computing and telecommunications has introduced greater complexity in the provisioning and performance management of remote services. We propose extended management strategies for this complexity. Our overall aim is for the management to accept responsibility for the complex service in an open marketplace. Responsibility is, firstly, defined by aiming to cover the totality...
Cloud computing has emerged as a new paradigm, which is the long-held dream of computing as utility, customer get it on an on-demand model. When discuss about performance requirement and QoS (Quality of Service) of service, it is hard to tackle these problem in a round consideration. In this work we propose an SLA-aware (Service Level Agreement aware) framework ¨C cloud service provider (CSP) for...
Cloud computing has emerged as a new paradigm that enables scientists to benefit from several distributed resources such as hardware and software. Clouds poses as an opportunity for scientists that need high performance computing infrastructure to execute their scientific experiments. Most of the experiments modeled as scientific workflows manage the execution of several activities and work with large...
The Internet has known an impressive success in the three last decades. Nonetheless, due to its size and scope, this large network has become victim of its own success. Innovative approaches are required to overcome the shortfalls of current systems and to design Next Generation Internet. In this context, network virtualization presents a viable solution to deal with the current Internet impasse....
Virtualization is essential to cloud computing as it can provide the means for flexible, reliable and manageable computing resources. At the same time, it raises new challenges for system management, including resource allocation for virtual machines (VMs), means for providing quality of service for applications, meeting organizational objectives, etc. This paper explores the use of policies to drive...
Large-scale virtualized infrastructures, such as those underlying cloud offerings, introduce novel, virtual variants of network components and links in addition to the well-known physical network elements. In these consolidated and generalised provisioning infrastructures, network QoS (quality of service) requirements apply not only to classic uplinks but also to storage and computing cluster interconnects:...
In this paper, we extend conventional grid scheduler to implement resource leasing strategy for mediating resource leases on behalf of the users. The proposed mechanism allows the resource providers to advertise its willingness to provide the hardware resource as lease and also to express lease usage policies. Further, it is also proposed to extend standard job submission description language to express...
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