| Re: [sumo-user] Sim using Windows version gives different results than Mac version |
Hello Hector, unfortunately this does not come as a big surprise. SUMO is compiled with different compilers (Visual Studio for Windows, probably gcc or clang for Mac, depending on the method of installation) and makes heavy use of floating point calculations which are optimized differently. If you look at our nightly tests you see the same picture: http://sumo.dlr.de/daily If the difference gets so big, it is usually because the network is either operating at the limit (at least locally) where a single vehicle which makes it over a junction makes the difference between flow or deadlock; or there is some peculiarity in the network (for example a short edge where a vehicle still fits in the one model and not in the other). If you really want to find out what is going on you can do fcd outputs on both machines and look for the first difference. You can also send us the scenario and we can have a look. Best regards, Michael Am 17.01.2018 um 21:57 schrieb Martinez, Hector A via sumo-user: > Good afternoon SUMO users, > > > > I am writing to find out if anyone has seen differences between the results of a sumo sim in Mac vs the results in a Windows computer? > > > > I work with a team of engineers and we not all use the same OS. We are not getting the same number of vehicles inserted in a simulation that runs for 2 hours. We are using the same exact configuration files and net files and are getting different results. We tend to get more cars inserted when using the Windows OS. We get 2032 cars when running the Windows version and 1172 cars when running the Mac version. They are both the sumo ver0.31.0. > > > > Any guidance on this will be greatly appreciated. > > > > -Hector > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > sumo-user mailing list > sumo-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/sumo-user > _______________________________________________ > sumo-user mailing list > sumo-user@xxxxxxxxxxx > To change your delivery options, retrieve your password, or unsubscribe from this list, visit > https://dev.eclipse.org/mailman/listinfo/sumo-user >
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