Figure 5

Graphical user interface. This figure shows the graphical user interface of the prototype. On the upper side, there is the user dialogue section with the node search system, the "update" press loads in the "available nodes" list all the nodes identified by search module as available on the grid. The special keys, on the right of the list, allows the user to choose the nodes which the user prefers proper for the computation. They will then appear in the "selected nodes" list. In the user program module the available applications, which must be executed on the selected nodes, appear. The user specifies the input/output directory for the job using the browse buttons.