Integration of GridFTP as an Alternative File Transfer in UNICORE for the DEISA Infrastructure

Many scientific applications produce a lot of data when running on large-scale supercomputers. Sometimes this data can stay on the local storages but often it should be transferred to other resources for post processing or to be used for new computations. Therefore it is essential to have efficient file transfer mechanisms that transfer data. Scientists increasingly use Grid middleware like UNICORE for their job creation, submission and management. In the Grid community there are not many efficient solutions for file transfer, but GridFTP does provide efficient file transfer and nowadays is a de facto Grid standard. This paper motivates and describes the integration of GridFTP into UNICORE which now is a very important feature for scientists using DEISA resources.