'Exception: Experimenter No child cloud nodes specified' Error

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Vyk_k asked Mar 24, '23 Jeanette F commented Mar 31, '23

'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.

Software Version:

FlexSim 23.1.0 beta

experimenter experiment run

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Joerg Vogel commented · Mar 24, 2023 at 07:40 AM

@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 commented · Mar 24, 2023 at 11:36 AM

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

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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1679657577892.png (4.9 KiB)

Jeanette F ♦♦ commented · Mar 31, 2023 at 04:07 PM

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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Answer 1 · 2023-03-24T13:58:05Z

Jordan Johnson answered Mar 24, '23 Vyk_k commented Mar 27, '23

You need to configure the cloud computing nodes:

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 A few details may be out of date, but it should get you started: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

1679666068014.png (204.4 KiB)

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Phil BoBo ♦♦ commented · Mar 24, 2023 at 02:13 PM

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 commented · Mar 25, 2023 at 10:57 PM

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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