>> A "hybrid" solution may work well for you—group your tests into small sets, then run the sets sequentially, doing as much of each set in parallel as possible

>> A "hybrid" solution may work well for you—group your tests into small sets, then run the sets sequentially, doing as much of each set in parallel as possible. Very true. In fact, the Ortask scheduling engine takes this approach for automatically planning test cases, but it goes a bit further: it re-orders the test cases in each set so that they all run in a more optimal way. Relevant details start at minute 1:35 here http://youtu.be/n_yOU11J7as http://youtu.be/n_yOU11J7as