Overview of research projects on the Cray Y-MP at the Leibniz-Rechenzentrum Muenchen

In June 1996 the Leibniz Computing Center (LRZ) installed a new Cray T90 parallel vector computer. Like its predecessors, this machine is run as a regional vector computer ('Landesvektorrechner') for the universities througout Bavaria. In November 1988 the first Landesvektorrechner, a Cray X-MP/24, was installed. About a year later it was replaced by a Cray Y-MP 4/432 with 4 processors and 32 MW (256 MB) of main memory. Over the years the Y-MP was extended several times until the machine was an eight processor model with 128 MW of main memory (a 'Cray Y/MP 8/8128'). In 1992 this concept of a central vector computer for Bavaria was completed as five Bavarian universities installed smaller, binary compatible Cray Y-MP EL machines, which where used mainly for pgoram development. We took this upgrade from the old Y-MP system to the new T90 as a chance to review the past and current research projects, which where carried out on the Landesvektorrechner. The present report is the result. Due to the immense number of user reports and the variety of research fields we would like to state that no further investigations on quality and selection of the articles was done by the LRZ. Of course this mixture is very heterogeneous. But this also reflects the wide usage of the Landesvektorrechner. For any questions on the contents of the reports we refer the reader to the authors themselves. This report is also accessible through the World Wide Web (WWW) with the URL http://www.lrz-muenchen.de/LRZ/PUBL/INFO/UMDRUCKE/CRAY/berichtsheft/. target=NewWindow> http://www.lrz-muenchen.de/LRZ/PUBL/INFO/UMDRUCKE/CRAY/berichtsheft/. The first article summarizes the future developments of High Performance Computing in Bavaria. The second report compares the Cray Y-MP system to the parallel system IBM SP2 which is also installed at the LRZ and completes the range of High Performance Computing currently available at the LRZ. The LRZ will in future continue its commitment to provide High Performance Computing to its users. We are already planning new installations which will become available at the end of 1996. Last but not least we than Mr. Reinhold Bader for his support in the compilation of the numerous reports to a single LATEX document. (orig.)SIGLEAvailable from TIB Hannover: RN 2900(9601) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman