Monte Carlo neutron transport on the Alliant FX/8

Description

A Center-of-Mass Monte Carlo program (COM) used in designing neutron densitometers is considered and its implementations are carried out on the Alliant FX/8 multiprocessor. The schemes for static and dynamic computation assignment parallel Monte Carlo algorithms developed in earlier work are used for carrying out the implementations. It is shown that linear speedup, almost equal to the number of processors, could be achieved with dynamic computation assignment schemes. It is found that the Alliant machine with eight processors is about 8 times slower than the CYBER-205 with two pipes.