"Lan Nguyen" wrote: > >Is someone setup for Multi-processors machine ?. >Do I need special license for Nx-nastran ? software ?. > >Thanks. > >Lan I am running XP (SP2) on a PC with two dual core processors. When I set the number of processors to 4 in the analysis case dialog boxes, all 4 processors are used for the analysis. I can only suggest you just try it. Best of luck, Carlton.