Is there a limit to number of rigid bodies in simulation

Omniverse Isaac Sim
,
1

Hi Forum,

As the title suggests, we are interested in knowing is there a limit to the number of rigid bodies in the simulation?

We would also be interested in knowing if and how this value can be changed.

Hope you can help :)

2

This depends on your simulation settings on the physics scene.

  1. CPU simulation (CPU Dynamics and MBP broadphase) does not have any known limitations
  2. GPU simulation does have memory limitations. These limits can be found on a PhysicsScene prim in the GPU section. On a decent GPU it should be possible to simulate around 1m rigid bodies, however not out of the box. Depending on your scene you would need to tweak the GPU buffers as on the GPU there are no dynamic allocations, most of the buffers are pre-allocated and needs to be set before the simulation starts.

Regards,
Ales