"Have you ever been in a situation where you had to run multiple
instances of the same application, with different input data each
time, in sequence, because the job was too computation-intensive
and your machine not powerful enough to run all the instances
simultaneously? The solution to that problem could be to harness
the machines that are already connected to your local network and
apply their unused CPU cycles to your projects. Condor, a
specialized batch system for managing compute-intensive jobs, may
be your answer.
"Condor lets you queue multiple jobs, searches for free machines
on the network (those with no keyboard activity, no load average,
and no active Telnet users), and submits jobs to them, then returns
the results to the machine from where it was submitted..."