Abstract
This paper investigates the interoperability issues between European and Indian Grid infrastructure and implements methodologies to overcome some of them. The main objective of EU-India Grid interoperability project is to aggregate the computational resources available across Europe and India, and to use them effectively in solving computationally intensive scientific applications. As both European and Indian Grid is based on different middleware, the interoperability initiative leads to several issues with respect to job submission, resource management and monitoring, security, and data transfers. The European Grid is based on gLite middleware and Indian Grid Garuda is a combination of in-house software's developed by C-DAC (Centre for Development of Advanced Computing), India, Globus toolkit and industry grade components. In this work, several interoperability issues have been investigated and a preliminary interoperable system to facilitate remote job submission, resource discovery between gLite and Garuda Grid infrastructure is proposed. An ExtendedUI is created to interoperate between the middleware and its prototype implementation is presented. This ExtendedUI consists of all the libraries and adapters for job submission across globus and gLite based Grid resources. GridSeed tool is used to setup experimental Grid infrastructure consists of resources based on both gLite and globus middleware and the extendedUI has been tested for job submission and information aggregation.