Path tracing with denoiser crash

Gaming and Visualization Technologies Visualization OptiX
1

Howdy,

I’m experimenting with denoised path tracing using the basic code from the “optixDenoiser” sample scene. Optix works amazing well but I’m hitting some instability when there’s lots of objects to trace.

[url]PathTraceDenoisedCrash - YouTube

The crash is random and occurs in nvoglv64.dll. I’ve updated to the latest gpu drivers without success.

Here’s my system details

OptiX 5.0.0
CUDA v 9.1
Number of Devices = 1
Device: 0 GeForce GTX 960M
Driver Version: 390.77
Compute Support: 5 0
Total Memory: 4294967296
Clock Rate: kilohertz 1176000

2

try CUDA 9.0 (or even 8.0) and device driver: 388.59 and TDR enabled (with long delay times)
I had many crashs with CUDA 9.1 in combination with OptiX 5.0.0 on that path tracer + denoiser sample (and a deactivated TDR) but since using CUDA 9.0 and driver 388.59 and enabled TDR no more crashs yet.
In release notes [url]https://developer.nvidia.com/designworks/optix/downloads/5.0.0/releasenotes[/url]
Take a look at "Development Environment Requirements " and at “known issues”.
NOTE: when using CUDA 8.0 the MDL part may cause trouble again, see your older question [url]Can't compile the MDL samples using VS 2015 - OptiX - NVIDIA Developer Forums

3

Cuda 9.0 with driver 388.59 and TDR delay of 10 works without crashing.

Thanks for the help!