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Yokota T avatar image
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Yokota T asked Jason Lightfoot commented

webserver's max instances

I'm trying to do parallel computing on FlexSim webserver. I understand I can change the max number of instances.

What I want to know is an appropriate max number. Webserver should finish all simulations as soon as possible, but at the same time mustn't crash. How can I calculate a recommended max number? What I want to know is not a certain max value for my project and PC, but general methods to calculate the value.

Thank you.

FlexSim 21.1.0
webserverflexsim webserverinstance
5 |100000

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1 Answer

Jason Lightfoot avatar image
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Jason Lightfoot answered Jason Lightfoot commented

If you have only 1 instance then all jobs will be queued while the one instance is busy. If you have more than one instance then parallel jobs can be executed meaning if you have one job that is a lot of replications other jobs will still get through without having to wait in line.

That said - I believe the Job Submission technique of using the webserver does not coordinate capacity limits with distributed experiments via the experimenter so I think you need first to decide which method you are using. Developers please chime in if I've got this wrong.

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Yokota T avatar image Yokota T commented ·
I have to get not only performance measures data but statistics collectors time series dataset. So I need use Job Submission technique.

Is it a good choice to use the default max instances number, 8?

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Jason Lightfoot avatar image Jason Lightfoot ♦♦ Yokota T commented ·

If you need to have 8 different models running at once, yes.

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Yokota T avatar image Yokota T Jason Lightfoot ♦♦ commented ·

OK, I'll try it.

Thank you for your answer.

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