Daz Studio 4.11 not rendering with GPU.
TreyM
Posts: 39
Rather than going through the pain of troubleshooting, can I roll back to 4.10?
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I have the same problem after the DS 11 release:
- Got the latest Windows 10 update
- Then went back to load the most recent NVIDIA drivers (430.86) - which I dowloaded directly from NVIDIA
- I have GeForce GTX 850M checked in both sections under the Render Advanced tab
- I even went back into the NVIDIA control panel and tried both preferred graphics processor settings (Automatic and High Perfromance NVIDIA processor)
But DS 11 doesn't use my GeForce GTX 850M at all. I see other programs using that processor (to very small degrees) so it seems to be working, but DS 11 won't touch it.
Are you sure it is not rendering with GPU? If you are relying on Windows Task Manager it is likely, by default, to give an incorrect impression.
Fair question. What's a better way of checking what it is actually using?
Edit to add: I'm using WDDM 2.0, which I thought dipslays GPU usage correctly. And my Performance tab in Task Manager shows separate entries for CPU (100% usage) and GPU 1 (NVIDIA GeForce GTX 850M - 0%)
I checked the error log:
2019-06-20 21:31:44.684 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray ERROR - module:category(IRAY:RENDER): 1.0 IRAY rend error: Cannot render: found no usable devices.
2019-06-20 21:31:44.685 Iray Render error: Invalid parameters (NULL pointer)
And yes the Task Manager showed no load to the GPU memory. However, I updated the NVidia drivers to 4.3x and it seems to work fine now.
If the CPU is at 100% that does sound as if it is not using the GPU.
I tried a render with a simple sphere and again it failed to use the GPU. Checking the error log (and omitting a ton of detail) I repeatedly get the following errors relating to CUDA device 0 (GeForce GTX 850M):
- out of memory (while allocating memory)
- Failed to allocate 45.9375 MiB
- May not have enough memory available to execute CUDA kernal (estimated 45.9375 MiB)
After several repetitions of that concerning varying memory requirements, it then shows:
- Failed to allocate device memory, falling back to CPU
Any idea would be greatly appreciated!
Are Maxwell cards still supported in this version of iRay?
Not rendering after installed the new version 4.11. It doesn't show the progress window when click render.
Are you using GPU or CPU (or both)? Which GPU? Which driver?
I use a GTX 1080 TI and it is not using the GPU either. On an AMD 9370E processor, 16 gigs of memory running Window 7 Pro SP 1. Worked fine with 4.10 but now not working.
Task Manager show CPU usage across eight cores running 45 and 100 percent. Ten min into render of plain sphere on black background and still not done.
Advanted tab shows both settings set to use the graphics card.
This is not acceptable performance.
And which nVidia driver are you using? In any event, if it wasn't using the GPU (or was using both GPU and CPU) I would expect near 100% continuous CPU usage, not varying between 445% and 100% - please check the end of the log file after rendering (Help>Troubleshooting>View Log File) to see exactly what the render used.
Driver is newest one available 430.86 download and installed direct from the nvidia website.
AMD processors shift between cores, hence the non 100%.
Not sure how to read the log file, like thousands of lines, so what am I looking for?
Did find this though:
2019-06-21 11:23:26.968 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(398): Could not add path: "F:/ProgramData/NVIDIA Corporation". Due to unknown error -2
2019-06-21 11:23:26.984 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(398): Could not add path: "E:/my library/data/!MDL". Due to unknown error -2
2019-06-21 11:23:26.984 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(398): Could not add path: "C:/Users/Jeff/AppData/Roaming/DAZ 3D/Studio4/shaders/iray". Due to unknown error -2
2019-06-21 11:23:26.984 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(398): Could not add path: "C:/Users/Jeff/AppData/Roaming/DAZ 3D/Studio4/temp/shaders/iray". Due to unknown error -2
Dose that help?
@BronzeDragon
Studio version 4.11 requires a minimum Nvidia driver version of 418.81. You need to get the driver from Nvidia, not from Microsoft.
I have the newest driver, direct from nvidia, 430.86. And I never get drivers from Microsoft, I always get them from the manfacture's site if they are available that way.
I'm having the same issue. While rendering with an RTX2070 and two GTX960's.
Mid render it will cut out and drop to CPU rendering.
My current configuration is most the current flashed Bios, i7 2700k processor, 32Gb, Windows 10 version 1903, latest Studio. RTX 2070 and two GTX960's...now the problem. I've trouble shooted a number of combinations of one card, two cards, all three cards while dealiing with the driver issues and system roll backs from Windows (1903 to 1803 and back again) and tried Nvidia's downgrading and upgrading from 417 to 419 or 430 (USE THE STUDIO VERSION not the gamer edition! RTX2070 and GTX960's conflict and the 960's are shut off for some strange reason...totally differnt issue but resolved. Also ensure the onboard Integrated video is disabled in the bios.)
It doesn't really matter what the version of Nvidia is used at this point. Start of render, mid render, it doesn't matter.
The only temp work around is to save the scene, shut Studio down then load it all with a freshly loaded scene and click render, and pray that at some point the render doesn't drop to CPU.
I've unchecked Opti' I've checked all the boxes but CPU for rendering and it still drops.
This was a minor inconvience with the beta of 4.11 but now that studio is full released, the problem occures more often. Test render in the work scene are not immune either, watch the little update in the corner of the screen as the scene is set up...it may say CPU rendering only, not to mention GPU monitors show all the cards at 0 or 1% (Most likely due to Windows using it but the CPU usage is at 100%.
Something has happened to Iray in the lastest versions and needs or should be reavaluated.
side note of humor. :-) 3delight still works fine. :-)
Those errors seem to say that DS couldn't find the folders. Do those folders exist where DS is looking for them?
Iray and 3Delight will use all of the cores available.
Not sure, that's an odd error - it looks as if Iray is unable to add some directories which might prevent it from rendering, but if so I'd expect a total failure not just a failure to use the GPU. The very end of the render information in the log (which should be about the last line or so if you open immediately after rendering) whould tell you how many iterations each device performed - that's what I was interested in.
Is DS telling you it's using CPU? I just tried a quick render and studio reported using my GTX1070. DS updated just a couple hours ago, not sure if the bug was already fixed by the time I got it, but not having any issues.
Core i7 8700K, 32G ram, Gigabyte GTX1070 w/8GB
Log file from most recent [partial] render:
2019-06-21 12:42:46.806 Iray INFO - module:category(MATCNV:RENDER): 1.0 MATCNV rend info : found 149 textures, 40 lambdas (7 unique)
2019-06-21 12:42:46.810 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Emitter geometry import (1 light source with 2 triangles, 1 instance) took 0.00s
2019-06-21 12:42:46.814 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating environment.
2019-06-21 12:42:47.085 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating backplate.
2019-06-21 12:42:47.085 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating lens.
2019-06-21 12:42:47.085 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating lights.
2019-06-21 12:42:47.085 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating object flags.
2019-06-21 12:42:47.090 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating caustic portals.
2019-06-21 12:42:47.090 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating decals.
2019-06-21 12:42:47.118 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Allocating 1-layer frame buffer
2019-06-21 12:42:47.151 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Using batch scheduling, caustic sampler disabled
2019-06-21 12:42:47.152 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Initializing local rendering.
2019-06-21 12:42:47.217 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Rendering with 1 device(s):
2019-06-21 12:42:47.217 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : CUDA device 0 (GeForce GTX 1070)
2019-06-21 12:42:47.217 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Rendering...
2019-06-21 12:42:47.217 Iray VERBOSE - module:category(IRAY:RENDER): 1.2 IRAY rend progr: CUDA device 0 (GeForce GTX 1070): Processing scene...
2019-06-21 12:42:47.222 Iray VERBOSE - module:category(IRAY:RENDER): 1.8 IRAY rend stat : Geometry memory consumption: 12.769 MiB (device 0), 0 B (host)
2019-06-21 12:42:50.481 Iray INFO - module:category(IRAY:RENDER): 1.8 IRAY rend info : Importing lights for motion time 0
2019-06-21 12:42:50.481 Iray VERBOSE - module:category(IRAY:RENDER): 1.8 IRAY rend stat : Texture memory consumption: 271.045 MiB for 30 bitmaps (device 0)
2019-06-21 12:42:50.481 Iray INFO - module:category(IRAY:RENDER): 1.8 IRAY rend info : Initializing light hierarchy.
2019-06-21 12:42:50.482 Iray INFO - module:category(IRAY:RENDER): 1.8 IRAY rend info : Light hierarchy initialization took 0.00s
2019-06-21 12:42:50.487 Iray VERBOSE - module:category(IRAY:RENDER): 1.8 IRAY rend stat : Lights memory consumption: 948 B (device 0)
2019-06-21 12:42:50.491 Iray VERBOSE - module:category(IRAY:RENDER): 1.8 IRAY rend stat : Material measurement memory consumption: 0 B (GPU)
2019-06-21 12:42:50.530 Iray VERBOSE - module:category(IRAY:RENDER): 1.8 IRAY rend stat : Materials memory consumption: 232.012 KiB (GPU)
2019-06-21 12:42:50.530 Iray VERBOSE - module:category(IRAY:RENDER): 1.8 IRAY rend stat : PTX code (76.1 KiB) for sm61 generated in 0.0389s
2019-06-21 12:42:50.870 Iray INFO - module:category(IRAY:RENDER): 1.8 IRAY rend info : JIT-linking wavefront kernel in 0.169s
2019-06-21 12:42:50.892 Iray INFO - module:category(IRAY:RENDER): 1.8 IRAY rend info : JIT-linking mega kernel in 0.022s
2019-06-21 12:42:50.892 Iray INFO - module:category(IRAY:RENDER): 1.2 IRAY rend info : CUDA device 0 (GeForce GTX 1070): Scene processed in 3.675s
2019-06-21 12:42:50.897 Iray INFO - module:category(IRAY:RENDER): 1.2 IRAY rend info : CUDA device 0 (GeForce GTX 1070): Allocated 104.975 MiB for frame buffer
2019-06-21 12:42:50.954 Iray INFO - module:category(IRAY:RENDER): 1.2 IRAY rend info : CUDA device 0 (GeForce GTX 1070): Allocated 1.6875 GiB of work space (2048k active samples in 0.053s)
2019-06-21 12:42:50.954 Iray INFO - module:category(IRAY:RENDER): 1.2 IRAY rend info : CUDA device 0 (GeForce GTX 1070): Used for display, optimizing for interactive usage (performance could be sacrificed)
2019-06-21 12:42:53.099 Iray INFO - module:category(IRAY:RENDER): 1.2 IRAY rend info : Allocating 1-layer frame buffer
2019-06-21 12:42:53.252 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Received update to 00001 iterations after 6.035s.
2019-06-21 12:42:55.305 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Received update to 00002 iterations after 8.088s.
2019-06-21 12:42:57.436 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Received update to 00003 iterations after 10.219s.
2019-06-21 12:42:59.621 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Received update to 00004 iterations after 12.404s.
2019-06-21 12:43:01.708 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Received update to 00005 iterations after 14.491s.
This was at the bottom of the:
2019-06-21 14:38:41.431 Iray VERBOSE - module:category(IRAY:RENDER): 1.0 IRAY rend progr: 99.51% of image converged
2019-06-21 14:38:41.509 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Received update to 07668 iterations after 909.017s.
2019-06-21 14:38:41.509 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Convergence threshold reached.
2019-06-21 14:38:50.775 Saved image: C:\Users\Jeff\AppData\Roaming\DAZ 3D\Studio4\temp\render\r.png
2019-06-21 14:38:50.791 Finished Rendering
2019-06-21 14:38:50.869 Total Rendering Time: 15 minutes 21.89 seconds
up in the file further I found this:
2019-06-21 14:22:42.961 Iray INFO - module:category(IRAY:RENDER): 1.2 IRAY rend info : CUDA device 0 (GeForce GTX 1080 Ti): Scene processed in 0.041s
2019-06-21 14:22:42.961 Iray INFO - module:category(IRAY:RENDER): 1.6 IRAY rend info : CUDA device 0 (GeForce GTX 1080 Ti): Allocated 30.5076 MiB for frame buffer
2019-06-21 14:22:42.992 Iray INFO - module:category(IRAY:RENDER): 1.2 IRAY rend info : CUDA device 0 (GeForce GTX 1080 Ti): Allocated 1.6875 GiB of work space (2048k active samples in 0.000s)
2019-06-21 14:22:42.992 Iray INFO - module:category(IRAY:RENDER): 1.2 IRAY rend info : CUDA device 0 (GeForce GTX 1080 Ti): Used for display, optimizing for interactive usage (performance could be sacrificed)
2019-06-21 14:22:42.992 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray WARNING - module:category(IRAY:RENDER): 1.0 IRAY rend warn : There is no CUDA-capable GPU available to the iray photoreal renderer.
2019-06-21 14:22:43.351 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray WARNING - module:category(POST:RENDER): 1.0 POST rend warn : renderer iray has no more devices available. Postprocessing falling back to CPU.
2019-06-21 14:22:43.413 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Received update to 00184 iterations after 20.703s.
2019-06-21 14:22:43.429 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : CPU: using 8 cores for rendering
2019-06-21 14:22:43.444 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Rendering with 1 device(s):
2019-06-21 14:22:43.444 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : CPU
2019-06-21 14:22:43.444 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Rendering...
2019-06-21 14:22:43.444 Iray INFO - module:category(IRAY:RENDER): 1.2 IRAY rend info : CPU: Scene processed in 0.001s
2019-06-21 14:22:43.444 Iray INFO - module:category(IRAY:RENDER): 1.22 IRAY rend info : CPU: Allocated 31.8389 MiB for frame buffer
2019-06-21 14:22:43.522 Iray VERBOSE - module:category(IRAY:RENDER): 1.2 IRAY rend progr: CPU: Processing scene...
2019-06-21 14:22:43.522 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Received update to 00186 iterations after 20.793s.
2019-06-21 14:22:43.522 Iray VERBOSE - module:category(IRAY:RENDER): 1.23 IRAY rend stat : Native CPU code generated in 2.58e-06s
2019-06-21 14:22:43.834 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray WARNING - module:category(IRAY:RENDER): 1.0 IRAY rend warn : There is no CUDA-capable GPU available to the iray photoreal renderer.
2019-06-21 14:22:44.786 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : CUDA device 0 (GeForce GTX 1080 Ti): compute capability 6.1, 11 GiB total, 8.40284 GiB available, display attached
2019-06-21 14:22:44.786 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : iray photoreal CPU fallback is enabled.
2019-06-21 14:22:46.190 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray WARNING - module:category(IRAY:RENDER): 1.0 IRAY rend warn : There is no CUDA-capable GPU available to the iray photoreal renderer.
2019-06-21 14:22:46.471 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Received update to 00187 iterations after 23.741s.
2019-06-21 14:22:46.486 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray ERROR - module:category(IRAY:RENDER): 1.0 IRAY rend error: Cannot render: found no usable devices.
2019-06-21 14:22:46.502 Iray VERBOSE - module:category(IRAY:RENDER): 1.0 IRAY rend progr: Transaction closed, stopping renderer.
2019-06-21 14:22:46.517 Iray Render error: Invalid parameters (NULL pointer).
2019-06-21 14:22:47.173 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : CUDA device 0 (GeForce GTX 1080 Ti): compute capability 6.1, 11 GiB total, 8.40284 GiB available, display attached
2019-06-21 14:22:47.173 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : iray photoreal CPU fallback is enabled.
2019-06-21 14:23:29.111 Rendering image
No they do not. Don't know why it would be looking in those locations. The program was loaded to, and set to run, on the "j' drive.
The most important bit will be at the end, but
shows it is starting off in the GPU not the CPU.
OK, that is indeed using the CPU fallback after failing to use the GPU. Have you checked that the driver is still the correct version, and hasn't been repalced by a silent "update"? Though i still think there's somethign else, other than driver issues, going on in this case.
It's not DS. It's looking for your assets in E:/my library/data/!MDL
It's looking for something, likely the CUDA DLL in F:/ProgramData/NVIDIA Corporation
And shaders, I think, in C:/Users/Jeff/AppData/Roaming/DAZ 3D/Studio4/shaders/iray
Do those folders exist and is there something in them?
My point of view - 4.11 doesn't support GPU if nvidia not support this hardware any more (this is my case with GT630, i can't insatll the newest Nvidia's driver and i can't use 4.11) => Your only option is to go back to 4.10 to use GPU.
This is a directory for custom MDL shader files (though not the default).
I just had the same issue after the 4.11 update running 3x 1080ti's and Windows 10 Pro. Iray would just close out, and if given the option would only use CPU. I was still on a very old NVidia driver from last year. Something like version 396-397
I just updated to NVidia version 430.86 and now Iray works perfect again. Even seems faster now.
OK...so now I've tried to do a render on my laptop that has a GTX 980M with the latest drivers installed (by the nVidia app, NOT windows update).
The dialog box opens, the render window comes up with the checkerboard, dialog box closes and this is left in the log file:
2019-06-24 11:17:16.211 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray ERROR - module:category(IRAY:RENDER): 1.0 IRAY rend error: Cannot render: found no usable devices.
My question is: where is the folder "..\..\..\..\..\src\pluginsource\DzIrayRender" supposed to be?? I did a search of my entire computer and cannot find it anywhere. Do I need to do some re-installs to make sure everything is where it needs to be or is this just a file in a folder that is created in the moment for the program to use and then it goes away immediately after? Another question - if it is a constant folder/file, is it installed by Studio or nVidia
That is there, I believe, to tell the developers which bit of the source code produced the error (.cpp = C++ code file). It doesn't mean you should have that file on your system.
I just moved to 4.11 (4.11.0.383_Win64) and am having the same problem:
2019-06-30 14:03:47.690 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray WARNING - module:category(IRAY:RENDER): 1.0 IRAY rend warn : There is no CUDA-capable GPU available to the iray photoreal renderer.
2019-06-30 14:03:49.418 Iray INFO - module:category(IRT:RENDER): 1.0 IRT rend info : Resource assignment for host 0 has changed.
2019-06-30 14:03:50.946 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray WARNING - module:category(IRAY:RENDER): 1.0 IRAY rend warn : GPU 2 (GeForce GTX 980 Ti) with CUDA compute capability -1.-1 cannot be used by iray photoreal.
2019-06-30 14:03:50.946 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray WARNING - module:category(IRAY:RENDER): 1.0 IRAY rend warn : There is no CUDA-capable GPU available to the iray photoreal renderer.
2019-06-30 14:03:52.603 Iray INFO - module:category(IRT:RENDER): 1.0 IRT rend info : Resource assignment for host 0 has changed.
2019-06-30 14:04:01.208 Rendering image
2019-06-30 14:04:01.221 Iray INFO - module:category(IMAGE:IO): 1.0 IMAGE io info : Loading image "D:\Studio 4 Release\shaders\iray\resources\DTHDR-RuinsB-500.hdr", pixel type "Rgb_fp", 512x256x1 pixels, 1 miplevel.
2019-06-30 14:04:01.260 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating geometry.
2019-06-30 14:04:01.260 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Using built-in ray tracing (1.0.0).
2019-06-30 14:04:01.260 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Importing scene graph.
2019-06-30 14:04:01.261 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Auto instancing compression ratio 0.89 (Full instancing compression ratio 0.84)
2019-06-30 14:04:01.261 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Importing geometry for motion time 0
2019-06-30 14:04:01.261 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Geometry import (1 object with 14 triangles, 1 instance yielding 14 triangles) took 0.000118
2019-06-30 14:04:01.261 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating materials.
2019-06-30 14:04:01.262 Iray INFO - module:category(MATCNV:RENDER): 1.0 MATCNV rend info : found 0 textures, 0 lambdas (0 unique)
2019-06-30 14:04:01.262 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Emitter geometry import (1 light source with 2 triangles, 1 instance) took 0.00s
2019-06-30 14:04:01.262 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating environment.
2019-06-30 14:04:01.277 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating backplate.
2019-06-30 14:04:01.280 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating lens.
2019-06-30 14:04:01.280 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating lights.
2019-06-30 14:04:01.280 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating object flags.
2019-06-30 14:04:01.281 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating caustic portals.
2019-06-30 14:04:01.281 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Updating decals.
2019-06-30 14:04:01.288 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Allocating 1-layer frame buffer
2019-06-30 14:04:01.296 Iray INFO - module:category(IRAY:RENDER): 1.0 IRAY rend info : Using batch scheduling, caustic sampler disabled
2019-06-30 14:04:01.297 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray ERROR - module:category(IRAY:RENDER): 1.0 IRAY rend error: Cannot render: found no usable devices.
2019-06-30 14:04:01.297 Iray Render error: Invalid parameters (NULL pointer).
2019-06-30 14:04:01.432 Saved image: D:\studio-temporary-files\render\r.png
2019-06-30 14:04:01.442 Finished Rendering
2019-06-30 14:04:01.490 Total Rendering Time: 0.35 seconds
My card is a 980ti, I'm on nvidia driver version 425.31
In the advanced tab on the render settings, the 980ti is checked for both interactive and photoreal. I can render with CPU, but GPU fails to render (just quits nearly immediately and end up with an empty (checker board) image).
Any help would be appreciated.
EDITED TO UPDATE: I unistalled 4.11 and reinstalled 4.10 and 4.10 is rendering fine using the 980ti - seems to be a problem with the 4.11 Studio software.
Try uninstaling and reinstalling the driver, that version should work but it's possible soemthing went wrong.
I've tried several driver versions, same result basically (though for some earlier ones the render is just an all black image instead of the checkerboard), and came back to this driver version. One note, I am unable to install any of the 430.x series of NVIDIA drivers - my system crashes on install. So it looks like 425.31 is the most recent driver I'll be able to use for now. Obviously there may be some relationship between the driver install crash and the inability to render with 4.11, but I don't know why 4.10 would work. I don't really have time to debug this more unfortunately, I'll have to stick with 4.10 until either a new driver works for me or we get an update to Studio 4.11.
Thanks for your help.