I am new to using the openmosix kernel myself. I don't know what distro you are using the openmosix kernel with, but I am using ParallelKnoppix, its website is fairly helpful, and its forums are probably the best place to ask question reguarding clustering especially with the openmosix kernel since that is what ParallelKnoppix uses. I am still a newbie when it comes to clustering, but I believe I saw something on the P-KPX forums reguarding stress testing, if you posted in that forum maxIT, I'm sure you'd get an answer as I'm sure it is a pretty common problem getting hardware in multiple computers to work together in the cluster.

As for the error message about the folder not being able to be found imiziq, I think that is refering to the "Working Directory", which is a directory which must be created and mounted on all the master nodes, and slave nodes of the cluster in order for any work to be done, if you download and use ParallelKnoppix, it will walk you through all of the steps needed to set up the cluster including getting the Working directory running, it will also tell you about a command called mpirun which allows you to use the "Message Passing Interface" to communicate data for processing between the nodes of the cluster, mpirun works like this:
Code:
mpirun -np 2 nameoftheapp.extension
Hope I was of help, and for more detailed help and a tutorial, visit the ParallelKnoppix site