ESGIA: Extensible service based grid information aggregator
Grid Interoperation is a short term solution to join different grid middlewares, which works in the concept of developing bridges/gateways to overcome the dissimilarities of the grid middleware functionalities. Grid interoperability is a long term effort which aims at building standard components pluggable with the native middleware and thereby making it seamlessly connected with other standard middlewares. In this paper, we discuss a grid interoperation mechanism, Extensible Service Based Grid Information Aggregator, which aggregates the resource information from different middlewares viz. GlobusTookit 2.4(GT2), Globus Toolkit 4.0(GT4), UNICORE and gLite. The proposed information aggregator is service based, extensible and pluggable with resource brokers and Meta schedulers. The salient feature in this work is that there is no need for any modifications at the middleware level. The performance of Extensible Service based Grid Information Aggregator (EGSIA) is tested by providing the aggregated resource information to a simulation model which runs deadline driven grid application.
aggregator globus toolkit2.4 globus toolkit 4.0 unicore glite