Using Fabric with Particles

Omniverse Isaac Sim
1

Hi IsaacSim team,

In the past, we’ve integrated Fabric (formerly Flatcache) into our pipeline to get better performance. IIRC, in an older version of Isaac, particles (e.g.: fluids) didn’t utilize Flatcache but were still functional – i.e.: their poses would be updated properly as physics progressed, and the visualization was correct.

We’re now observing that in our current version of IsaacSim (4.1), particles no longer are updated nor do their renderings update as physics is stepped if Fabric is enabled.

Is this expected behavior? And if so, is there any potential workaround?

Thanks!

3

Unfortunately, such update is not currently supported for particles using point instancers. This doc may help.

4

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