In this paper we propose a new infrastructure for efficient job scheduling on the Grid using multiagent systems and a market-like Service Level Agreement (SLA) negotiation protocol based on the well known Contract Net Protocol. The agent-based Grid scheduling system involves user agents, local scheduler agents, and super scheduler agents. User agents submit jobs to Grid Compute resources. Local...

The advancements in distributed computing have driven the emergence of service-based infrastructures that allow for on-demand provision of ICT assets. Taking into consideration the complexity of distributed environments, significant challenges exist in providing and managing the offered on-demand resources with the required level of Quality of Service (QoS), especially for real-time interactive...

Monitoring of Service Level Agreements (SLAs) is required to determine if the Quality of Service (QoS) provided by a service provider satisfies the expectations of a service consumer. Although tools exist that can generate the software required to evaluate SLAs from the SLA specifications themselves, the code required to gather metric data is still predominantly coded by hand: a time consuming ...

Service selection based on non-functional properties (NFP) of services is one of the most important and challenging task in service-oriented computing. NFP are usually described in service-level agreements (SLA). Therefore, the problem of comparison of SLAs arises naturally if there is more than one service with the same desired functionality. SLAs are usually written in a special XML-based for...

Some applications utilizing Grid computing infrastructure require the simultaneous allocation of resources, such as compute servers, networks, memory, disk storage and other specialized resources. Collaborative working and visualization are examples of such applications. In these applications, Quality of Service (QoS) is related to Grid services, and not just to the network connecting these ser...

It is increasingly important that Service Level Agreements (SLAs) are taken into account when business processes are exposed as services in a Service Oriented Architecture. SLAs define expected service behavior and nonfunctional properties of the service. The fact that the service provider has to offer certain guarantees concerning SLA properties has an impact on the business process lifecycle....

On-line end-to-end Service Level Agreement (SLA) monitoring is of key importance nowadays. For this purpose, recent researches have focused on measuring (when possible), or estimating (most of the times) network Quality of Service (QoS) and performance parameters. Up to now, all the proposed solutions have the drawback of requiring a huge amount of resources with low accuracy, generally leading...

TIC1998-0495-C02-01 ABSTRACT In this work, the design and development of a routing management application based on mobile agents in an Internet 2 (I2) environment is proposed. The objective of the application is to provide a routing based on the quality of service defined on a Service Level Agreement (SLA). For this purpose, the application obtains in each moment the best route according to a t...

The role of competition and monetary benefits in the design of Content Delivery Networks (CDNs) is largely an unexplored area. In this paper, we investigate the effect of competition among the competitive web based CDNs and show that little difference in their performance may cause significant financial gain/loss. It turns out that the economy of scale effect is very significant for the success...