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...responsible for communicating with other peers in order to get resources to comply with its local demands and also to provide resources to other peers, in an economic model known as network of favors =-=[1]-=-. Grid resources, which run the software named UserAgent or the one named SWAN, are supplied to grid users, through the MyGrid scheduler. The virtual environment built in the test is composed of three...

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...processors. In this paper we are concerned with the latter issue, i.e. providing ways to assemble large pools of processors for the execution of MTC applications. Desktop grid computing has proved itself as a suitable environment for high-throughput computing. Condor [2] is arguably the most well known representative of the existent technology to enable high-throughput desktop grids. Other systems that followed Condor’s philosophy have also proven to be equally effective [3][4]. These generic infrastructures are, however, limited scale systems. Even if some sort of incentive mechanism is used [5], it is unlikely that a system comprising more than a few dozens of thousands of computers will ever be assembled. Indeed, the largest existing systems using these technologies feature less than a few thousands of computers [6]. Voluntary computing platforms [7][8], on the other hand, are able to assemble huge amounts of resources to process the extremely large workload of their typical applications. These powerful infrastructures are, however, less flexible in the types of applications that they support. Firstly, setting up a voluntary computing infrastructure has a cost that is significantly...

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...cause OurGrid incorporates an incentive mechanism – named the “Network of Favors” – that makes in the best interest of each peer to donate as much idle resources as possible, discouraging free-riding =-=[4]-=-. Also important is its ability to discover idle resources in a very efficient way, thanks to the use of NodeWiz, a highly scalable and fault-tolerant peer-to-peer Grid Information Service that is spe...

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...aps the idle computation resources provided by desktop units, is based on a P2P network and enables everyone to submit arbitrary jobs for distributed computation is referred to as a Desktop Grid [4], =-=[5]-=-, [6], [7], [8]. The cumulative potential leveraged by a Desktop Grid grows with the number of resources connected to it. Hence, a Desktop Grid benefits from the capability to integrate a heterogeneou...

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...tion. When the desired trust threshold is satisfied, the result is accepted as a final. —Incentive scheduling: Incentive mechanisms [Obreiter and Nimis 2003; Zhu et al. 2006; Ranganathan et al. 2004; =-=Andrade et al. 2007-=-] aim to encourage resources’ owners to donate their resources eagerly, reliably, and trustworthily. It gives rewards (such as, money, resources, ranking, etc.) to volunteers for their donation. Incen...

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...wards participants based on their contribution histories. Direct reciprocation applies to long-lasting applications as they provide enough reciprocation opportunities. Example project such as OurGrid =-=[9]-=- uses this method to restrain free-riding. On the other hand, indirect reciprocation methods use reputation or its variants [72]. The taxonomy for incentive mechanism is summarized in Fig. 10. In addi...