how to set process sequence based on the length of queue?

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kuo asked Apr 24, '24 Felix Möhlmann answered Apr 25, '24

how to set process sequence based on the length of queue?

Hi, I'd like to know how to revise my model.

The attachment is my model, which contains items of different types. Depending on the type of item, they have to go through different processors. For example, type 1 and 4 need to go through processors 1, 2 and 3, type 2 needs to go through processors 2 and 3, while type 3 only needs to go through processor 3.

What I want to do is to have items processed according to certain rules: First, the item should select the processor with the shortest queue length among the required processors. When the item has finished processing, it should again select the processor with the shortest queue length among the remaining required processors. After the item has been processed by all the processors it needs, it goes to sink.

please help me to deal with it cause I have been looking up for the guide on internet for a long time, thanks in advanced!

demo.fsm

Software Version:

FlexSim 23.1.2

queue processor task sequence processs flow prioirty

demo.fsm (35.5 KiB)

Answer 1 · 2024-04-25T07:58:06Z

Felix Möhlmann answered Apr 25, '24

I'd assign the steps the item has to go through to an array label and put the queues onto a Fixed Resource List as well as assign a label to them which denotes the step they represent. The token can then pull the queue with the least content from a list whose step is still part of the pending steps of the item.

If no queue can be pulled, the pendings steps must be empty and the item can be send to the sink.

demo_fm.fsm

demo-fm.fsm (39.0 KiB)

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