bottlenecks
rather than simply production. It tries to optimise the complete system rather than simply optimising individual operations on a piecemeal basis.
The full version of OPT is a proprietary system owned by a software and consultancy company but this does not prevent using the excellent ideas it contains. OPT is a trademark of the Scheduling Technology Group. The only, but excellent, book on the subject is 'The Goal' by E Goldratt and J Cox.