Prime model update not async

I’m updating an OptiX prime model with RTP_MODEL_HINT_ASYNC, but when I profile I see it’s blocking and if I call rtpModelGetFinished immediately after it always returns finished.

I am using host buffer vertices and indices that I have locked.

It doesn’t run async on context type CUDA or CPU

Optix 5.1, Windows 10, GTX 1070, Driver: 416.34

I’m wondering if this is expected on my driver/card or a bug? Docs seem to suggest this should be async.



I’m experiencing this too!

Optix 6.0, Windows 10, GTX 1080, Driver: 418.91

Best regards!