Last job where I worked on CI infrastructure, I set up a 200-machine physical server farm, that was then split on-demand into smaller clusters, and those ran te

Last job where I worked on CI infrastructure, I set up a 200-machine physical server farm, that was then split on-demand into smaller clusters, and those ran tests for a distributed storage product -- including day-long stress tests. If you have trivial needs, trivial solutions are sufficient.