Solving grid interoperability between 2nd and 3rd generation grids by the integrated P-GRADE/GEMCLA portal
Tamás Kiss, Péter Kacsuk, Gabor Z. Terstyanszky, Thierry Delaitre, Gábor Kecskeméti, Stephen C. Winter · WestminsterResearch (University of Westminster) · 2006
Grid interoperability has recently become a major issue at Grid forums. Most of the current ideas try to solve the problem at the middleware level where unfortunately too many components (information system, broker, etc.) should be made interoperable. As an alternative concept the P-GRADE/GEMLCA portal is the first Grid portal that targets the problem at the level of workflows. Different components of a workflow can be executed simultaneously in several Grids providing access to a larger set of resources and enabling the user to exploit more parallelism than inside one Grid. The paper describes how the P-GRADE Portal and GEMLCA enable the execution of workflows in multiple Grids based on different 2 (GT2 and LCG-2) and 3 (GT4 and g-Lite) generation Grid middleware.