Münster 2002 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 14: Poster Session: Instrumentation and Applications

HK 14.5: Poster

Tuesday, March 12, 2002, 10:30–12:45, Foyer Chemie

Concept for a Dedicated Multi-Node Data Processing System for Realtime Trigger and Analysis Applications — •D. Kirschner, I. Fröhlich, A. Gabriel, W. Kühn, J. Lehnert, M. Petri, J. Ritman, D. Schäfer, A. Toia, and M. Traxler — II. Phys. Inst. Giessen,, Heinrich-Buff-Ring 14, 35392 Giessen

Modern Experiments in hadron physics like the HADES detector at GSI-Darmstadt produce a large amount of data that has to be distributed, stored and analyzed. Analysis of this data is very time consuming due to the large amount of data and the complex algorithms needed.

This problem can be addressed by a dedicated multi-node and multi-CPU computing architecture interconnected by Gigabit-Ethernet. Dedicated hardware has the advantages over “Grid-Computers” in skaleability, price per computational unit, predictability of time behavior (posibility of real time applications) and ease of administration. Gigabit-Ethernet provides an efficient and standardized infrastructure for data distribution. This infrastructure can be used to distribute data in an experiment as well as to distribute data in a multi-node computing environment.

The concept of a prototype VME-Bus card for data distribution and analysis in a multi-node environment will be presented. The card will be divided into two major units: a network unit featuring two Gigabit Ethernet connections and a computational part featuring several Digital Signal Processors.