1. In addition to rebuilding to include the cluster and MOSIX stuff, did you have to set any specific option to support dual processors - or do the install scripts notice them and set up accordingly? (I did a search through all the VL forums, but didn't find much on multiple cpu's - one log file did have a line "CPU#0" .)
Yes, I got to recompile the kernel to support SMP (symetric multiprocessor) for the dual processor machines.
As mentioned, VL 5.8 already supports it.
Unfortunatelly, you still have to recompile a new kernel specific for the mosix.
Note, for a single CPU machine, don't use SMP,
because SMP scheduling slowdowns a single CPU machine a bit.
2. As the current VL is a 2.6.x.x, am I correct that you're trying MOSIX for Linux-2.6?
Yes, I got to sent an email to the author (Prof Amnon Barak),
because MOSIX is not completelly an open source software.
Then he sent me MOSIX for a specific kernel (2.6.20 in my case).
Recently, I saw there is a new mosix for kernel 2.6.22.
Another option is openmosix, which is a fork of MOSIX.