Where are the settings to switch denoiser to be GPU accelerated?

[GidPDX]

Neverko has a GTX 980- at least that's what was said earlier.

Or were you responding to me Valdimir? I have a paltry 660- and it's my only card at the moment.

Will have a 1070 or 1080 soon though once CUDA is updated for them.

Even with my 660 though, GPU denoising is MUCH faster than on the CPU (4770K).

[neverko]

Still no luck getting the denoiser to run on my GPU.

See attached screenshot taken during the denoising process. (GPU fan speed at 0 RPM is fine as the ASUS Strix card I'm using doesn't run active cooling until the card is under load).

I've also attached the event log.

-- modo Event Log -- Fri Sep 16 09:21:07 2016

-- modo Event Log -- Fri Sep 16 09:21:07 2016

System -------- Time -------------------- Type -- Message -------------------------------------
Log System Fri Sep 16 09:16:17 2016 Info Log system started
Scripts Fri Sep 16 09:16:23 2016 Info SDF_StripHaul.pl (perl script)
Log System Fri Sep 16 09:16:23 2016 Info V-Ray core version is 3.25.01
Log System Fri Sep 16 09:16:23 2016 Info V-Ray for MODO 1011 Advanced version is 3.40.01, revision 26630 from Jun 25 2016, 03:45:01
Log System Fri Sep 16 09:16:23 2016 Info MODO version detected by V-Ray is 1012 build 120147
octaneRenderFor Fri Sep 16 09:16:23 2016 Info Octane plugin loaded
Log System Fri Sep 16 09:16:52 2016 Info V-Ray Render
Fri Sep 16 09:16:52 2016 Info V-Ray Render : started
Fri Sep 16 09:16:52 2016 Info Initializing V-Ray license connection... 0h 0m 0.2s
Fri Sep 16 09:16:52 2016 Info Translating MODO scene to V-Ray... 0h 0m 0.2s
Fri Sep 16 09:16:53 2016 Info Exporting keyframe for frame time 0.00... 0h 0m 0.5s
Fri Sep 16 09:16:53 2016 Info Preparing renderer...
Fri Sep 16 09:16:53 2016 Info Using Intel Embree ray server
Fri Sep 16 09:16:53 2016 Info Creating bitmap manager
Fri Sep 16 09:16:53 2016 Info Preparing scene for rendering... 0h 0m 0.0s
Fri Sep 16 09:16:53 2016 Info 2 lights found.
Fri Sep 16 09:16:53 2016 Info Using probabilistic light sampling with 16 lights.
Fri Sep 16 09:16:53 2016 Info Max ray intensity is enabled: rendered result may have incorrect brightness.
Fri Sep 16 09:16:53 2016 Info Begin sequence... 0h 0m 0.2s
Fri Sep 16 09:16:53 2016 Info Dome light resolution increased from 512 to 2048 for light "__DomeLightGIEnvironment"
Fri Sep 16 09:16:53 2016 Info Bitmap file "C:\Users\Bo Hansen\Desktop\Modo_scene_Materials\Assets\Kitchen .hdr" loaded.
Fri Sep 16 09:16:54 2016 Info Preparing scene for frame... 0h 0m 0.8s
Fri Sep 16 09:16:54 2016 Info Compiling geometry... 0h 0m 0.0s
Fri Sep 16 09:16:54 2016 Info Using embree ray tracing.
Fri Sep 16 09:16:54 2016 Info Building embree static trees took 84 milliseconds
Fri Sep 16 09:16:54 2016 Info Building embree static accelerator ... 0h 0m 0.1s
Fri Sep 16 09:16:54 2016 Info Frame begin... 0h 0m 0.9s
Fri Sep 16 09:16:54 2016 Info Tracing 640000 image samples for light cache in 64 passes.
Fri Sep 16 09:16:54 2016 Info Using 19.78 MB for light cache preview buffer
Fri Sep 16 09:17:07 2016 Info Building light cache... 0h 0m 13.0s
Fri Sep 16 09:17:07 2016 Info Merging light cache passes... 0h 0m 0.5s
Fri Sep 16 09:17:07 2016 Info Light cache contains 59274 samples.
Fri Sep 16 09:17:07 2016 Info Light cache takes 10.5 MB.
Fri Sep 16 09:17:07 2016 Info Prefiltering light cache... 0h 0m 0.1s
Fri Sep 16 09:17:07 2016 Info Average rays per light cache sample: 34.52 (min 1, max 1191)
Fri Sep 16 09:17:07 2016 Info Using premultiplied light cache.
Fri Sep 16 09:19:55 2016 Info Rendering image... 0h 2m 47.4s
Fri Sep 16 09:20:09 2016 Info Denoising RGB color 0h 0m 14.5s
Fri Sep 16 09:20:09 2016 Info Denoising complete in 14.63 s
Fri Sep 16 09:20:09 2016 Info Number of raycasts: 185102137 (357.06 per pixel)
Fri Sep 16 09:20:09 2016 Info Camera rays: 11368960 (21.93 per pixel)
Fri Sep 16 09:20:09 2016 Info Shadow rays: 81181522 (156.60 per pixel)
Fri Sep 16 09:20:09 2016 Info GI rays: 32134039 (61.99 per pixel)
Fri Sep 16 09:20:09 2016 Info Reflection rays: 55044513 (106.18 per pixel)
Fri Sep 16 09:20:09 2016 Info Refraction rays: 28066815 (54.14 per pixel)
Fri Sep 16 09:20:09 2016 Info Unshaded rays: 12122734 (23.38 per pixel)
Fri Sep 16 09:20:09 2016 Info Light cache utilization: 66.55%
Fri Sep 16 09:20:09 2016 Info Premultiplied light cache utilization: 32.26%
Fri Sep 16 09:20:09 2016 Info Number of light evaluations: 145307512 (280.30 per pixel)
Fri Sep 16 09:20:09 2016 Info Number of intersectable primitives: 399519
Fri Sep 16 09:20:09 2016 Info SD triangles: 399518
Fri Sep 16 09:20:09 2016 Info MB triangles: 0
Fri Sep 16 09:20:09 2016 Info Static primitives: 0
Fri Sep 16 09:20:09 2016 Info Moving primitives: 0
Fri Sep 16 09:20:09 2016 Info Infinite primitives: 1
Fri Sep 16 09:20:09 2016 Info Static hair segments: 0
Fri Sep 16 09:20:09 2016 Info Moving hair segments: 0
Fri Sep 16 09:20:09 2016 Info Frame end... 0h 0m 0.0s
Fri Sep 16 09:20:09 2016 Info Total frame time... 0h 3m 17.4s
Fri Sep 16 09:20:09 2016 Info Total render time... 0h 3m 17.4s
Fri Sep 16 09:20:13 2016 Info Cleaning up bitmap manager
Fri Sep 16 09:20:13 2016 Info Bitmap file "C:\Users\Bo Hansen\Desktop\Modo_scene_Materials\Assets\Dirt.jp g" loaded.
Fri Sep 16 09:20:13 2016 Info Bitmap file "C:\Users\Bo Hansen\Desktop\Modo_scene_Materials\Assets\Scratch es.jpg" loaded.
Fri Sep 16 09:20:13 2016 Info Bitmap file "C:\Users\Bo Hansen\Desktop\Modo_scene_Materials\Assets\Wood.jp g" loaded.
Fri Sep 16 09:20:13 2016 Warning Material "shaderTree@mask838@polyRender006" produced overbright or invalid color (rgb=0.702704 0.130658 -0.074040).
Fri Sep 16 09:20:13 2016 Info V-Ray Render : complete

[neverko]

Any idea why the denoiser isn't utilizing the GPU?

[vladimir.nedev]

Any idea why the denoiser isn't utilizing the GPU?

Sorry for the delay.

Looking at the code, there is only one case, where nothing GPU related is printed to the Event Log (either info on used GPU or error info), like in your case.
This is when OpenCL cannot be initialized at all. I need to modify the code to log this error, so we are sure this is what happens.

You can try installing the newest nVidia drivers (even re-installing them if they are the latest already).
Also maybe download this tool : http://www.geeks3d.com/20160824/gpu-...31-0-released/
It has an OpenCL tab to check for OpenCL compatibility. Also the "Demos" tab has some OpenCL demos you can run to check if OpenCL is working on your system.

Greetings,
Vladimir Nedev

[neverko]

Thank you, Vladimir.

Everything works as expected now. The GPU-Z utility I use actually shows whether you have OpenCL support or not and guess what, I didn't have OpenCL support... chalk it up to being one of those things you're so certain you have that you forget to actually make sure. Silly me, I was thinking "Of course I have OpenCL because it comes with the driver." Only for some reason my system no longer had OpenCL support. I reinstalled my current graphics driver and everything is back to normal with the denoiser running on the GPU.

The only plausible explanation for the mising OpenCL support is that it somehow got wiped when I recently upgraded Windows 10 to build 1607 (Anniversary Update) because the driver I use was installed prior to that update.

Since all my other "GPU apps" are CUDA based I haven't run into issues before looking closer at the denoising process.

[vladimir.nedev]

The only plausible explanation for the mising OpenCL support is that it somehow got wiped when I recently upgraded Windows 10 to build 1607 (Anniversary Update) because the driver I use was installed prior to that update.

Ah, yes, I remember now. Someone had the same problem (missing opencl.dll in Windows 10 ) with the "Select OpenCL devices" tool (which selects CUDA devices too).
The thread is here : http://forums.chaosgroup.com/showthr...-device-to-use

Greetings,
Vladimir Nedev