SUMMARY When I modify the settings for the collision solver, the risk of a colossal memory usage is serious. More than 5 GB will be used if tolerance is set to 0.0000000001. That is not a problem when you have more than 5 GB of free space, but unfortunately this is not my case. I think it would be a good idea if a message of warning appeared before starting the simulation. STEPS TO REPRODUCE 1. Create a circle of infinite mass 2. Create a particle that will collide with the circle. 3. Before starting the simulation, set the tollerances of the solver1 and the collision solver to very low value. 4. Start simulation. OBSERVED RESULT 5 GB of internal memory is used (in my case this means a full memory occupation), and my computer become very slow even after the crash of step. The only way to go back to normality is reboot and free memory by command line. EXPECTED RESULT Before starting the simulation, a warning message should appear, like "You are going to waste 5 GB of your memory, are you sure? If not, change tolerance parameters." SOFTWARE/OS VERSIONS Linux 4.15.0-46-generic #49-Ubuntu SMP Wed Feb 6 09:33:07 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux ADDITIONAL INFORMATION
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!