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Vyk_k avatar image
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Vyk_k asked Jeanette F commented

'Exception: Experimenter No child cloud nodes specified' Error

Hello,

Please, how do I solve this problem while trying to run my experiment? An error that reads, 'exception: Experimenter No child cloud nodes specified' shows below the system console. What is the root cause of this error? How can it be resolved? Thanks.

FlexSim 23.1.0 beta
experimenterexperiment run
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Joerg Vogel avatar image Joerg Vogel commented ·
@Vyk_k , we do need more information. You can attach a picture of the complete console text, because often you see more than that what you posted. The faulty model would be even better, because we can see which events leads to this error.
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Vyk_k avatar image Vyk_k commented ·

Thanks, @Joerg Vogel , for your response. Here is the attached picture of the console:

1679657577892.png

That is the only information on the console. Please, let me know if the whole faulty model is still required, and I will send it.

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Jeanette F avatar image Jeanette F ♦♦ commented ·

Hi @Vyk_k, was Jordan Johnson's answer helpful? If so, please click the "Accept" button at the bottom of their answer. Or if you still have questions, add a comment and we'll continue the conversation.

If we haven't heard back from you within 3 business days we'll auto-accept an answer, but you can always unaccept and comment back to reopen your question.

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1 Answer

Jordan Johnson avatar image
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Jordan Johnson answered Vyk_k commented

You need to configure the cloud computing nodes:

1679666068014.png

You also need to configure those cloud nodes and ensure that the FlexSim webserver is running on those machines and that the same version of FlexSim is installed on those machines.

Here is some documentation on this process:

https://docs.flexsim.com/en/23.1/GettingData/AdvancedDataGathering/RunningJobs/RunningJobs.html#cloud

Here is a walkthrough article from a few years ago. A few details may be out of date, but it should get you started:
https://answers.flexsim.com/articles/53302/using-amazon-web-services-for-distributed-experime.html



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Phil BoBo avatar image Phil BoBo ♦♦ commented ·

Alternatively, if this model was built by someone else and configured to use distributed CPUs on their cloud nodes, but you want to run the experiment locally on your machine, simply clear the Use Distributed CPUs box on the Experimenter's Advanced tab.

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Vyk_k avatar image Vyk_k commented ·

Thanks @Joerg Vogel, @Jordan Johnson, it's now resolved. I just restarted my computer, and the errors ceased. I appreciated your leads. Next time, if restarting my computer doesn't fix the problem, I'm going to reference these contributions.

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