Originally posted by: ChemStudent

Hello,

I am relatively new to tumple and I would like to develop a job shop scheduling using OPL. Im formulating a problem using a Resource-Task Network model,  implementing it on Cplex. The aim is to obtain a production schedule that minimizes the time required for a complete job cycle. Knowing the following:

The product has to go through 5 Tasks, to be completed by 4 Machines (Machine1, 2x Machine2, Machine3). Task1 takes 1 hour to complete using Machine1. Simultaneously, Task3 requires 1 hour on Machine2 to be completed. Task2 starts immediately after, on a clean Machine2, taking 2hours to complete. Task4 starts immediatly after on Machine2 (that got cleaned after Task3) and takes 2 hours to complete.Finally, Task5 starts immediatly after Task4 completes, taking 3 hours on Machine3.  (Diagram attached below to better understand the situation)

Is it possible to describe this situation on a 16hour job scheduling situation using OPL? And if so, how would it be programmed? 

Best regards

Hi,

have you had a look at scheduling within OPL ?

https://www.ibm.com/support/knowledgecenter/SSSA5P_12.9.0/ilog.odms.ide.help/OPL_Studio/scheduling_gs/topics/opl_gs_sched_with_cplex_studio.html

regards

Originally posted by: ChemStudent

Yes, I've tried the turtorials on scheduling but I still can't progam the situation of my problem. It doesnt seem too complex or different from some situations on the tutorials but I can´t seem to be doing it right

Hi

I suggest http://icaps17.icaps-conference.org/tutorials/T3-Introduction-to-CP-Optimizer-for-Scheduling.pdf

and to have a look at the jobshop example in

CPLEX_Studio129\opl\examples\opl\sched_jobshop

regards