A Novel Approach for Realising Superscalar Programming Model on Global Grids

This paper presents a novel approach for the design and implementation of Grid Superscalar (GS) model on top of GWFE (Gridbus Workflow Engine). This new workflow-based version of the GS framework enables the easy development of applications (without the need of explicit expression of parallelism/distribution by the programmer) and scheduling them on Global Grids using the GSB (Gridbus Service Broker) transparently. By means of a simple programming model, GWFE-S provides a pure Java library and keeps the Grid as transparent as possible to the programmer. Moreover, the deployment of the applications is highly optimized by using the GSB which supports various types of Grid middleware. The runtime of superscalar has been designed to follow the Gridbus Workflow and is therefore formed by a set of dependent workflow tasks which will be scheduled and executed to different Grids. The feasibility of the work is demonstrated by conducting performance evaluation on a global Grid having resources located in Australia and USA