DEISA and D-Grid: using UNICORE in production Grid infrastructures

DEISA is a consortium of leading national supercomputing centres in Europe that is operating and enhancing a persistent, production quality, distributed supercomputing environment with continental scope in Europe. D-Grid is the central German Grid initiative that builds up and operates a sustainable Grid infrastructure in Germany and establishes methods of e-science in the German scientific community. To integrate their resources, both the DEISA and D-Grid communities have adopted the most advanced Grid middleware systems and applications currently available. D-Grid uses UNICORE, Globus and LCG/gLite for job submission. The DEISA consortium decided to embrace UNICORE as a job submission interface for the DEISA Grid infrastructure. Both projects focus on the production use of Grid middleware. This paper describes the experiences with UNICORE as Grid middleware in e-infrastructures comprising systems in production use