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Re: [sumo-user] FatalTraCIError: Could not connect.

Hi,

you are reporting two different error messages:

First FatalTraCIError: Could not connect.

and now FatalTraCIError: connection closed by SUMO

This last error is often caused by problems with sumo (sumo crashes)

See https://sumo.dlr.de/docs/FAQ.html#my_traci-program_is_not_working_as_intended_how_do_i_debug_it

Best regards, Harald

Am 13.09.21 um 14:59 schrieb Syed Şah Sultan:
Hello once again.

I have checked almost everything from my side. I did not find the reason for this issue. Then I made a new folder and put the related file there and tried to run the simulations from there. It started working. But after almost 100 simulation runs, I am again having the same FatalTraCIError: connection closed by SUMO.

After continus trying, it starts working but just for two or three simulations. Jacob, please could you help me.


Regards 
S3M
 
 
================================
Syed Shah Sultan Mohiuddin
Ph.D. Candidate
Department of Industrial Engineering 
Yaşar University 





On Sun, 12 Sept 2021 at 20:46, Menno van der Woude <menno@xxxxxxxxxxxxxxxxxx> wrote:

Hello,

generally, in the case of "something works and then it did not", this will not be due to a SUMO related issue. It seems very unlikely that the program has changed out of the blue.

So, places to start looking for a resolution could be:

  • your code: did this change?
  • your environment: did something about Python change?
  • your system: did you install some update, or some major program? maybe something with the firewall?

Your issue, as you yourself have also observed, seems related to that particular system. So, in order to solve this you will have review the system and its setup. Maybe do some rubber duck debugging? :-) With the information you have provided below it's impossible to determine what caused the error; you'll have to search for this locally.

Greets,

Menno

On 12/09/2021 14:03, Hervé Diedie wrote:
Forget aboutit python it"s too Messy...use TraCI for C++

Le dim. 12 sept. 2021 à 10:23, Syed Şah Sultan <syedshahsultan@xxxxxxxxx> a écrit :
Hello once again

I was using sumo version 1.7.0. I tried the same code on another system having sumo version 1.8.0, the code is working perfectly. But in my system, till yesterday morning it was working, but suddenly starts giving me "FatalTraCIError: Could not connect." I reinstalled the latest version of Sumo i.e. 1.10.0 but still receiving the same error message. I have reviewed the previous discussions on the subject of the same error and tried what they suggested. But no improvement.
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Regards 
S3M
 
 
================================
Syed Shah Sultan Mohiuddin
Ph.D. Candidate
Department of Industrial Engineering 
Yaşar University 




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