MOSIXVIEW is a GUI for managing openMosix-Cluster. Everybody is invited to download and use it (at your own risk and responsibility).
You can adjust the main parameters of your openMosix-Cluster. It is a front-end for the "mosctl"-Commands. The "speed"of each node can be changed whith slide-buttons, that does not mean that you can increase the physical speed of a computer but you can influence what openMosix thinks what its speed is.
My experience is that processes will migrate a lot easier if the "speed" of the node the process is migrating to is higher than that one the process is running on (i set the speed of my "home-node" very low if i run some "bigger" jobs but still want to work at this host. Than all CPU-intensive processes will migrate to other nodes and on my "home-node" the load is quite low).