M. A. Schweitzer, G. W. Zumbusch, and M. Griebel.
Parnass2: A cluster of dual-processor PCs.
In W. Rehm and T. Ungerer, editors, Proceedings of the 2nd
Workshop Cluster-Computing, Karlsruhe, number CSR-99-02 in Chemnitzer
Informatik Berichte, pages 45-54, Chemnitz, Germany, 1999. TU Chemnitz.
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We report on a cluster with 96 CPUs (48 Dual-Processor PCs running Linux 2.1.127) at our department, called Parnass2. The computing nodes are connected by a Myrinet, a Gigabit per second switched LAN, and additionally by a Fast-Ethernet. A comparison of different message passing (MPI) libraries for the Myrinet is given. Furthermore, we present the performance results of Parnass2 for some of the parallel codes developed at our department, namely a sparse grid code for PDEs, a particle code for molecular dynamics, a finite difference code for the Navier-Stokes equation, and a parallel adaptive finite element / finite difference multi-grid code. We compare these results with the performance of these codes running on a Cray T3E-1200, a Cray T3E-600, a SGI Origin 200/2000 and Parnass [?], a cluster of SGI O2 workstations.