If you're open to a hosted solution, check out IronWorker: http://www.iron.io/worker

It's an async task processing service with a built-in job scheduler. You can upload your python scripts to Iron.io, then set schedules and other triggers to execute on-demand. We have a dashboard to manage tasks and schedules, see what ran and what failed, and you can visualize the characteristics you're looking for. We do distribute the workloads for you, but sounds like it could be a good fit.