A colleague of mine noticed that the denoiser would fail when processing an image of 2040x3060 resolution. Small variations of ±1px in width/height gave the same result. What happens is that the returned image is black but no error is produced.
Ι was able to reproduce this with the optixDenoiser SDK sample:
–dim 2040x3060 --nopbo --file result.ppm
I ran more tests after adding the “maxmem” variable (same resolution). The image was denoised but only when using values in a certain range. For example on my gpu I got a result when using 2gb or less for maxmem but denoising failed when I increased the value to 2.5. I haven’t noticed this kind of behavior with maxmem occurring with other resolutions.
Windows 7 Professional, 64-bit (Service Pack 1)
GeForce GTX 1060 6GB
Driver version: 398.82