S. Nemnyugin (ASSOCIATE PROFESSOR)
We report the results of parallelization and tests of the Parton String Model event generator at the parallel cluster of St.Petersburg State University Telecommunication center. Two schemes of parallelization were studied. In the first approach master process coordinates work of slave processes, gathers and analyzes data. Results of MC calculations are saved in local files. Local files are sent to the host computer on which the program of data processing is started. The second approach uses the parallel write in the common file shared between all processes. In this case the load of a communication subsystem of the cluster grows. Both approaches are realized with MPICH library. Some problems including the pseudorandom number generation inparallel computations were solved. The modified parallel version of the PSM code includes a number of the additional possibilities: a selection of the impact parameter windows,the account of acceptance of the experimental setup and trigger selection data, and the calculation of various long range correlations between such observables as mean transverse momentum and charged particles multiplicity.