PARALLELIZATION OF THE 2-DIMENSIONAL ISING-MODEL ON A CLUSTER OF IBM RISC SYSTEM-6000 WORKSTATIONS

Using the PVM programming environment for parallel applications, we ha ve parallelized a simulation of the two-dimensional Ising Model on a c luster of IBM RISC System/6000 1 workstations connected by a Token Rin g (16Mb/sec) and by Serial Optical Channels (220 Mb/sec) via a NSC 2 D X Router. The parallelization is done by dividing the lattice into sub lattices, each sublattice being associated with one workstation. On ea ch sublattice, a Metropolis algorithm using Multispin Coding technique s is used to generate new configurations. We provide numerical results concerning the number of spin updates per second, speedups, and effic iencies for various numbers of processors and lattice sizes.