GPU CUDA Simulator Settings
The EDEM CUDA GPU solver engine will automatically allocate memory and resources as required as the simulation runs. The EDEM CUDA GPU solver engine provides you options to review the memory settings in the Simulator > Tools > GPU Memory Calculator. This might be useful in situations where the simulation is getting close to the limit of memory available and you can see the estimated memory usage. In addition when the CUDA GPU solver engine is selected in the EDEM Simulator the “Display GPU Memory” option can be selected which will display GPU memory usage on the EDEM visualizer.
Preserving Contact Between Triangles
When working with physics models which have a contact history, particles can be seen to ‘jump’ (contact force spikes) when the particle moves from one geometry element to the next. This is because EDEM regards this as a new contact so the contact history is not preserved. In the Advanced settings menu the option to "Preserve Contacts Between Triangles" is available. This will keep the contact history for a particle passing from one element to another.
A user-defined tolerance is required for this option, this is to allow for geometries with minor variation in angle to be considered continuous. The tolerance is defined by an angle, and is the maximum angle between planes at which they would be considered co-planar.
A difference in angle of 10 degrees where contact is considered continuous vs an angle of 70 where it is considered as a separate contact. The default value is 0.01 degrees. 10 degrees would be considered an extreme value.
