Optix Denoiser MacOSX execute exception

Gaming and Visualization Technologies Visualization OptiX
1

I’ve successfully integrated the optix denoiser into my raytracer on Windows 10, when I try the same code on OSX I get this exception when I call the execute function.

Error code : RT_ERROR_UNKNOWN
Error string : “Unknown error (Details: Function "RTresult _rtCommandListExecute(RTcommandlist)" caught exception: Assertion failed: "m_launching : Memory manager released while launch not active", file: /Users/umber/workspace/rel5.0-mac64-cuda90-build-Release/sw/wsapps/raytracing/rtsdk/rel5.0/src/Memory/MemoryManager.cpp, line: 998)”

Optix 5.0.1, CUDA 9.1

Machine specs :
OSX High Sierra 10.13.4
NVIDIA GeForce GT 750M 2048 MB

NVIDIA Web Driver 387.10.10.10.30.106
CUDA 387.178

2

What’s the configuration of the Win10 system?

Is this error depending on the window client size? That is, does it work with smaller launch sizes on that 2GB board.

3

I’m launching it with a 640x480 size, I create 1 x float3 buffer, 2 x float4 buffers and one uchar4 buffer which I calculate to be around 14meg in total, no real system stress.

In my command list I perform a launch2D which performs a gamma correction and a conversion from the float3 to float4 buffer, the next stage is the denoiser then finally I launch2D which colour corrects and does a simple conversion to the uchar4 buffer.

I’ve tried this on the same machine on windows 10 (dual boot mac book pro) and it works fine.

4

Just fixed it, it didn’t like me including the second launch within the command list.

If I remove the colour correction launch from the command list, then just launch the colour correction after the commandlist has executed, everything works fine.

I think having 2 launch2D in a command list should be valid, seems like a bug in OSX optix.