Hi,
I had similar issues as described by Haotian Li with the SSM device when
calculating SSM measures for many vehicles. I had the impression the
number of simultaneous SSM vehicles was more important in this case but
did not do more formal checks. In my case, I solved it by refining the
research question to only enable the device for certain vehicles (e.g.
by type, by route,...)
Best regards
Mirko
Am 23.08.2021 um 11:47 schrieb Jakob Erdmann:
Hello,
the SSM device is not very memory efficient and has only been used on
medium sized scenarios thus far.
However, a shutdown of the simulation might also be due to a software
bug (i.e. due to a combination of untested options or an untested
traffic situation).
Does the simulation complete successfully without SSM device?
Does the simulation complete with SSM device and default scale value?
How much memory does it consume in this case?
How big is the simulation (total number of vehicles, approximate
number of simultaneous vehicles)?
regards,
Jakob
Am Mo., 23. Aug. 2021 um 09:58 Uhr schrieb Haotian Li
<haotian...@ucdconnect.ie <mailto:haotian...@ucdconnect.ie>>:
To whom it may concern:
I am Haotian Li, a senior student from UCD and BJUT. I'm here to
ask something about the hardware requirement for sumo-gui. I am
working on a summer internship using this software as a tool. When
I tried to simulate the urban networks using the scale of 3(try to
provide traffic jams), I used SSM devices to detect TTC and PET
and record conflict loading in conflict.xml and do statistics
research after simulation ended. However, I found that 16G RAM
can't afford the stress of caching index files and it would break
down while simulating. Then, I tried the 32G one and it would also
shut down even if the memory usage is not high. Would you please
give me some suggestions to fix it? Or I may forgive this scenario
because the DDL is approaching. Looking forward to your reply.
Have a nice day!
Yours sincerely,
Haotian Li
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