Why does Round Robin not work in this simple case?

Question

question

Patrick Cloutier asked Feb 26, '24 Patrick Cloutier commented Feb 26, '24

In the attached example, why doesn't Queue3 pull in round robin?

All I did was chose Input-Pull-RoundRobin on Queue3 and it doesn't work.

I know I could make it work with ProcessFlow but shouldn't the standard menu option work in this simple case?

Software Version:

FlexSim 24.0.1

round robin pullrequirement

roundrobinpull.fsm (30.9 KiB)

5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

Answer 1 · 2024-02-26T17:07:33Z

Jason Lightfoot answered Feb 26, '24 Patrick Cloutier commented Feb 26, '24

This is a timing issue in that everything is happening at time zero.

If you add this code to Queue3's reset it will work correctly:

closeinput(current);
createevent(current,0.00001,EVENT_USEROPENINPUT);

· 1

5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

Patrick Cloutier commented · Feb 26 at 07:08 PM

This works. Thanks. I see that I can instead just make the products arrive later than 0 in the Sources.

Or if I had other steps between the Sources and Queue3, it would also work because not everything would happen at the same time at time 0.

Thanks Jason,

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