The cluster processor: New results

We present a progress report on the Cluster Processor, a special-purpose co mputer system for the Wolff simulation of the three-dimensional Ising model , including an analysis of simulation results obtained thus far. These resu lts allow, within narrow error margins, a determination of the parameters d escribing the phase transition of the simple-cubic Ising model and its univ ersality class. For an improved determination of the correction-to-scaling exponent, we include Monte Carlo data for systems with nearest-neighbor and third-neighbor interactions in the analysis.