https://dlang.org/library/std/parallelism/task_pool.parallel.html#workUnitSize
Basically have no difference than the above but when I change the workUnitSize to 1, 4, whatever it is always running 8 parallel loops.
Either a bug or workUnitSize is not what I think it is. I simply want to execute n iterations of the loop at the time, not fixed at 8.
