High-performance GRID Database Manager for Scientific Data

The GRID initiative provides an infrastructure for distributed computa- tions among widely distributed high-performance computers. This will al- low for exchanging and processing very large amounts of data. The LO- FAR project (www.nfra.nl/lofar) is an international initi ative to build a ver- satile, geographically distributed, multi-point radio fa cility for astrophysics, space physics, atmospheric physics, and radio research, utilizing very high performance GRID computing. LOIS is a proposed Swedish outrigger to LOFAR providing a software radar. As the volume of data processed by LOFAR/LOIS is very large and dynamic there will be need for very high performing data management systems. For this a high-performance stream- oriented distributed data manager and query processor is being developed that allows very efficient execution of database queries to s treamed data involving numerical and other data. Very high performance is attained by utilizing many object-relational main-memory database engines running on