topic Experimenter problem in FlexSim Forum

Experimenter problem

s9816358 — Tue, 23 May 2023 08:07:44 GMT

[ FlexSim 20.0.10 ]

@Kavika F Hello!! I have a question

Connect flexsim and python via Socket

python as client flexsim as server

{

python is responsible for passing variables to flexsim

flexsim take variables to scenario and executes experimenter

After flexsim executes the experimenter, the value is passed to python

}

Execute the above process 100,000 times

There is no way to execute 100,000 times because the experimenter will be broken. Until a certain time you can only take variables to the scenario, but the experimenter cannot be enabled.

How to solve??

練習4.py

socket new.fsm

Re: Experimenter problem

kavika_faleumu — Tue, 23 May 2023 17:00:34 GMT

Hey @Tuan, what do you mean that the "experimenter will be broken"? Is there a specific number of replications where it fails? What kind of errors are you getting?

Please note that running 100,000 experiments would take a very long time. If every iteration only took 1 second, it would take over 27 hours to run.

Re: Experimenter problem

s9816358 — Tue, 23 May 2023 17:10:09 GMT

@Kavika F Hi

No errors are displayed and suddenly cannot communicate with each other because the experimenter can no longer execute!!

Re: Experimenter problem

kavika_faleumu — Tue, 23 May 2023 17:18:27 GMT

How do you know it is the experimenter and not the socket connection breaking?

Re: Experimenter problem

s9816358 — Tue, 23 May 2023 17:48:11 GMT

@Kavika F

In the middle of the communication , when neither party takes any action, the received variables are taken into the scenario in flexsim, and I manually start the experimenter There is no way to execute the experimenter

Re: Experimenter problem

s9816358 — Tue, 23 May 2023 17:50:14 GMT

As for the reason, it is not that the connection is interrupted, because I shut down the entire flexsim, and the python terminal shows that the connection has been forcibly disconnected

Re: Experimenter problem

kavika_faleumu — Tue, 23 May 2023 18:22:51 GMT

Is there a specific time or iteration where this happens? I can't really help you if I'm not able to replicate the problem.

Re: Experimenter problem

s9816358 — Tue, 23 May 2023 18:27:40 GMT

@Kavika F

I do it many times and the timing of the stop is different every time

Re: Experimenter problem

s9816358 — Tue, 23 May 2023 18:29:23 GMT

Is it possible that my IP was hacked by others and the execution was interrupted?

Re: Experimenter problem

kavika_faleumu — Tue, 23 May 2023 18:39:01 GMT

On average how long do you run the program before it stops? I ran it for several minutes and nothing happened.

Re: Experimenter problem

s9816358 — Tue, 23 May 2023 18:44:53 GMT

This happens within two days or within five days

Re: Experimenter problem

s9816358 — Tue, 23 May 2023 18:51:43 GMT

But when I encounter this situation, the file used is different. The file attached to the question is a simplified version to explain my problem.

I attach a file of the situation encountered

論文_autosave.fsm

GA for my elevator.py

Re: Experimenter problem

kavika_faleumu — Tue, 23 May 2023 19:18:17 GMT

Are you saying that after running the experimenter for 2-5 days, it stops working?

Re: Experimenter problem

s9816358 — Tue, 23 May 2023 19:22:49 GMT

That's right, this is the problem I'm currently having

Re: Experimenter problem

kavika_faleumu — Wed, 24 May 2023 19:46:30 GMT

Hey @Tuan, I recommend that you try to run FlexSim instances in parallel to get your results faster so the Experimenter has less time to "break". There are a number of ways you could do this.

You could try increasing the number of scenarios you run in the experimenter. Simply take in multiple inputs from the python script before running, and then after running the experimenter, you can export all the results to your script to process.

You can use distributed CPUs on the Advanced tab of the experimenter to break up the work to help the experiments run faster.

You could use the FlexSim Web Server to run the experimenter and avoid crashing. This will allow you to specify the number of instances of FlexSim you can have open, and run multiple at a time so you can get results back faster.

Re: Experimenter problem

julie_weller — Tue, 30 May 2023 19:57:13 GMT

Hi @Tuan, was Kavika F'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.