Nvidia denoiser cause large errors

[Micha]

Is it a known issue?

[georgi.georgiev]

Hi,

Could you please provide some additional information?
1. Does this occur with specific project or any (even newly created ones)?
2. Do you get any specific warnings/errors in the V-Ray Progress log?
3. Are you able to reproduce this consistently?
4. What is the full version number of the GPU drivers?

[Micha]

1. Only at a new created project.
2. I forget to look there.
3. No, I tried it again, but it works without errors now.
4. 430.86

[Micha]

Got the error again - here the progress log.

......
Progressive rendering finished: maximum sampling level reached

Closing RTEngine

Max. Mpaths per second: 24.512674

Sampling level reached: 13486 samples per pixel

V-Ray GPU kernel render time: 855.18s

Total GPU samples 16262135424

Mtls 60.06MB, Geo 714.86MB, Lights 0.00MB, LightCache 8.59MB, Reserved 1900.59MB

Device 0 statistics:

GPU time: 77.864752 %

GPU ray trace time 87.938805 %

Transfer to GPU time 0.061575 %

Transfer from GPU time 11.999620 %

Device 1 statistics:

GPU time: 78.067336 %

GPU ray trace time 87.470015 %

Transfer to GPU time 0.067671 %

Transfer from GPU time 12.462314 %

Device 2 statistics:

GPU time: 82.096101 %

GPU ray trace time 93.326586 %

Transfer to GPU time 0.040576 %

Transfer from GPU time 6.632838 %

Creating OptiX denoiser for image of size 10000 x 5000 with normals channel.

OptiX SDK version 60000, runtime version 60102

OptiX runtime version is different from expected: should be 6.0.0, found 6.1.2

There are 3 OptiX devices:

GeForce RTX 2080 Ti

GeForce RTX 2080 Ti

GeForce GTX 1080 Ti

Setting OptiX denoiser max mem to 500 mega bytes

OptiX denoising took 5305 milliseconds in total (4606 ms for OptiX only)

Number of raycasts: 97525066 (1.95 per pixel)

Camera rays: 4000588 (0.08 per pixel)

Shadow rays: 75599741 (1.51 per pixel)

GI rays: 67499111 (1.35 per pixel)

Reflection rays: 2485693 (0.05 per pixel)

Refraction rays: 0 (0.00 per pixel)

Unshaded rays: 0 (0.00 per pixel)

Number of light evaluations: 174697208 (3.49 per pixel)

Maximum memory usage for resman: 0.00 MB

Number of intersectable primitives: 5376340

SD triangles: 5376336

MB triangles: 0

Static primitives: 4

Moving primitives: 0

Infinite primitives: 0

Static hair segments: 0

Moving hair segments: 0

Cleaning up bitmap manager

Maximum memory usage for texman: 0.00 MB

[georgi.georgiev]

Could you please download and install the latest nVidia drivers and confirm if this resolves the issue?

[Micha]

Official recommended is 431 at the Chaosgroup GPU webpage - should I install 431 or the latest 436.3?

[Micha]

I installed 431 and the error appears. 431 is the latest Studio Driver.