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Introspection is the prerequisite of an autonomic behavior, the first step towards a performance improvement and a resource-usage optimization for large-scale distributed systems. In grid environments, the task of observing the application behavior is assigned to monitoring systems. However, most of them are designed to provide general resource information and do not consider specific information...
This work analyses two different approaches to parallelise an exact algorithm for the solution of the Constrained Two-Dimensional Cutting Stock Problem. A fine-grained model based on the parallel execution of the generation loops is implemented through a shared-memory model using the OpenMP tool. Also, a coarse-grained model based on the parallel execution of the search loop and in the introduction...
Load balancing among multi-cells in 3GPP Long Term Evolution (LTE) networks with heterogeneous services is investigated. It is formulated as a multi-objective optimization problem, the objectives of which are load balancing index of services with QoS requirements and network utility of other services. The constraints are physical resource limits and QoS demands. Then the property and complexity of...
With the proliferation of wireless services, multimedia interactivities are quickly becoming ubiquitous. As multimedia traffics generally have large packets volume, high data rate requirements in wireless transmission are critical. Next generation wireless systems, e.g., multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM), provide high throughput and support flexible...
Adaptive resource allocation has been shown to provide performance gain for OFDMA wireless mesh networks (WMNs) with full channel state information (CSI) at mesh router (MR) and mesh clients (MCs). However, full CSI at MR is rarely possible due to limited feedback resource and feedback delay. In this paper, we present more practical resource allocation strategies for OFDMA WMNs where the MR has only...
To deal with utilization method of goods by more than one person more applicative, this paper proposes Service Infrastructure Use Problem, and Social Utilization as a desirable condition of society on Service Infrastructure Use Problem. To make sure Social Utilization whether realizable or not, this paper formulates Service Infrastructure TSP as a specific model of Service Infrastructure Use Problem...
In this paper, the inter-cell interference coordination (ICIC) is investigated for the downlink transmission in OFDMA-based multi-cellular systems. The utility function is introduced to balance efficiency and fairness. Firstly, the system model is built based on the resource allocation rules of soft frequency reuse (SFR) and the utility-based optimization problem is formulated. Secondly, the problem...
We present a novel parallel auction algorithm implementation for solving the linear sum assignment problem. It is implemented using the message passing interface (MPI) on a computer cluster. Our approach enables dynamic computational load balancing over all processors throughout all steps of the algorithm's execution. We show that the performance of our approach is superior to existing approaches...
Reducing resource usage is one of the most important optimization objectives in behavioral synthesis due to its direct impact on power, performance and cost. The datapath in a typical design is composed of different kinds of components, including functional units, registers and multiplexers. To optimize the overall resource usage, a behavioral synthesis tool should consider all kinds of components...
In next generation wireless networks, great challenges have been posed to provide mobile multimedia services with QoS guarantees. Since bandwidth is a scarce resource in wireless networks, effective management of the limited radio resources is important to enhance the network performance. In this paper, we propose an adaptive and dynamic resource reservation and call admission control (CAC) strategy...
We propose a resource-efficient list scheduling heuristic for the problem of task scheduling in an optical Grid with the objectives of maximizing the network utilization efficiency and minimizing the task completion time.
Networked systems are common and crucial. One of the canonical problems in such systems is distributed resource allocation. From this rather broad class of problems, we consider a convex non-smooth resource allocation problem with a global resource constraint. Specifically, the objective function is separable and consists of a sum of convex functions, each associated with a node in a given network...
A coordination and control approach for task allocation is proposed in this paper, aimed at handling static task allocation and dynamic changes and disturbances. This coordination and control approach uses an indirect coordination mechanism, called pheromone, which comes from the collective behavior of ant colonies for food foraging. This approach has the capacity for task allocation model to automatically...
In the context of multiple emergencies occurring simultaneously, the optimal allocation of relief resources to multiple emergency locations is a challenging issue in emergency management. This work presents a noncooperative complete information game model for resource allocation and an algorithm for calculating Nash equilibrium (NE). In this model, the players represent the multiple emergency locations,...
Now our society faces a financial crisis. How to keep the economic growth and how to stand towering in this decline are focal points to all walks of life, so as construction. From the statistics of ENR Top 225 Contractors in 2007, we can know Chinese construction enterprises have a great progress in the international building market. However, we also can find there is a large weakness in such industrial...
We consider the problem of estimating the probability that a stochastic process observed at discrete time intervals exceeds a specified threshold. We further assume that the value of this process at any time, along any realization, is a conditional expectation which is not known analytically but can be estimated via simulation. This leads to a nested simulation procedure. One application of this arises...
Telecommunication companies believe that the video-on-demand market will expand heavily in the near future. The service providers are interested in the deployment of video-on-demand (VoD) systems with large numbers of videos. As the number of videos and customers increases at a VoD system, two problems are faced. The first problem is the manual video allocation of multiple copies of videos to the...
In this paper we cover the problem of load balancing in terms of optimum cell selection and wireless channel condition in the hybrid optical wireless network. For a given set of multimedia users with minimum quality of service requirements and a set of best effort users we find the optimum resource allocation that guarantees services for the users and maximizes the total network utility. Our model...
The paper addresses the problem of massive content distribution in a network where multiple sessions coexist. In more traditional approaches, the sessions form separate overlay networks and operate independently from each other. In this case, some sessions may suffer from insufficient resources (e.g., aggregate upload bandwidth) even though other sessions have excessive resources. To cope with this...
Orthogonal frequency division multiplexing (OFDM) is the key component of many emerging broadband wireless access standards. The resource allocation in OFDM uplink, however, is challenging due to heterogeneity of users' quality of service requirements, channel conditions, and individual resource constraints. We formulate the resource allocation problem as a non-strictly convex optimization problem,...
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