pvm [-nhostname] [hostfile]
PVM console. Starts PVM or just attaches to running PVM. Recommended way to start and stop PVM 3.
PVM Graphical Interface includes console functions, and more. Starts PVM or attaches to running PVM.
pvmd [-nhostname] [hostfile]
direct startup, seldom used except for debugging. Option -n useful if host has multiple network cards eg. ATM, ethernet