An Optimal Trust Based Resource Allocation Mechanism for Cross Domain Grid

Trust has been an essential quality factor in grid computing that has its influence in various other parameters like response time, throughput and resource utilization. This paper considers a method in which the factor “trust” is used in scheduling and resource allocation. Trust is calculated for both Service Provider and Client. In order to guarantee efficiency in resource allocation, a scheduling technique, which schedules the jobs according to the trust index of the Clients, is proposed. This optimal resource allocation scheme is implemented in a cross domain environment, that is, domains having different security mechanisms. The authentication is done using the signing of X.509 certificates. A common administrator is used between cross domains to provide interoperability. Both identity-based and reputation-based trusts are calculated for each entity. This ensures best service to customers. To overcome single point of failure, additional systems are provided that act as the administrator. A dynamic fault tolerance technique is proposed to guarantee successful execution of jobs in the event of resource failures.