... Cleo batch system is purposed to control parallel tasks on computer clusters. It controls one or more task queues. tasks sceduling (all MPI implemetations are supported, most other parallel environments are supported too) . ... controllable user limits (max used cpus, task work time, etc.) . ... Any task in main will be queued to daughter queues if there aren't enough free own cpus (not shared with daughters). When daughter queues will get enough cpus for this task, it will be runned in main . ...