DAZ Studio is using the CPU instead of GPU in iray

Illidanstorm

So I've had this problem before where DAZ3D is using my CPU and not my GPU in memory heavy scenes and was mostly able to fix it by disabeling Optix prime acceleration. 

But now I'm having the problem again, even without Optix actived and the CPU unchecked.

I'm trying to render two characters from P3D which are P3D Libby and P3D Tilly without an enviroment, just two figures. I've not had something like this happen even when I have 4 characters in the scene and an enviroment. 

Someone help please

 

The log says this

2019-02-18 20:20:13.279 Iray VERBOSE - module:category(IRAY:RENDER):   1.7   IRAY   rend progr: CUDA device 0 (GeForce GTX 1080 Ti): Processing scene...

2019-02-18 20:20:13.299 Iray VERBOSE - module:category(IRAY:RENDER):   1.10  IRAY   rend stat : Geometry memory consumption: 68.0208 MiB (device 0), 0 B (host)

2019-02-18 20:21:16.664 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : Initializing light hierarchy.

2019-02-18 20:21:16.670 Iray VERBOSE - module:category(IRAY:RENDER):   1.10  IRAY   rend stat : Texture memory consumption: 8.27715 GiB (device 0)

2019-02-18 20:21:18.330 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : Light hierarchy initialization took 1.66s

2019-02-18 20:21:18.337 Iray VERBOSE - module:category(IRAY:RENDER):   1.10  IRAY   rend stat : Lights memory consumption: 23.7448 MiB (device 0)

2019-02-18 20:21:18.623 Iray VERBOSE - module:category(IRAY:RENDER):   1.10  IRAY   rend stat : Material measurement memory consumption: 0 B (GPU)

2019-02-18 20:21:18.688 Iray VERBOSE - module:category(IRAY:RENDER):   1.10  IRAY   rend stat : Materials memory consumption: 553.992 KiB (GPU)

2019-02-18 20:21:18.688 Iray VERBOSE - module:category(IRAY:RENDER):   1.10  IRAY   rend stat : PTX code (8.16 KiB) for sm61 generated in 0.0643s

2019-02-18 20:21:19.953 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : JIT-linking wavefront kernel in 0.062s

2019-02-18 20:21:19.981 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : JIT-linking mega kernel in 0.028s

2019-02-18 20:21:19.986 Iray INFO - module:category(IRAY:RENDER):   1.7   IRAY   rend info : CUDA device 0 (GeForce GTX 1080 Ti): Scene processed in 66.707s

2019-02-18 20:21:19.989 Iray INFO - module:category(IRAY:RENDER):   1.7   IRAY   rend info : CUDA device 0 (GeForce GTX 1080 Ti): Allocated 39.5512 MiB for frame buffer

2019-02-18 20:21:19.989 Iray INFO - module:category(IRAY:RENDER):   1.7   IRAY   rend info : CUDA device 0 (GeForce GTX 1080 Ti): Allocated 1.65625 GiB of work space (2048k active samples in 0.000s)

2019-02-18 20:21:19.993 Iray INFO - module:category(IRAY:RENDER):   1.7   IRAY   rend info : CUDA device 0 (GeForce GTX 1080 Ti): Used for display, optimizing for interactive usage (performance could be sacrificed)

2019-02-18 20:21:20.004 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.10  IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): Kernel [0] failed after 0.010s

2019-02-18 20:21:20.004 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.10  IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while launching CUDA renderer in core_renderer_wf.cpp:807)

2019-02-18 20:21:20.008 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.10  IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): Failed to launch renderer

2019-02-18 20:21:20.008 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): Device failed while rendering

2019-02-18 20:21:20.008 WARNING: dzneuraymgr.cpp(307): Iray WARNING - module:category(IRAY:RENDER):   1.7   IRAY   rend warn : All available GPUs failed.

2019-02-18 20:21:20.012 Iray INFO - module:category(IRAY:RENDER):   1.7   IRAY   rend info : Falling back to CPU rendering.

2019-02-18 20:21:20.012 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while initializing memory buffer)

2019-02-18 20:21:20.012 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: All workers failed: aborting render

2019-02-18 20:21:20.016 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.016 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.016 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.020 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.020 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.020 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.024 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.024 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.025 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.7   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.029 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.0   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.029 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.0   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.029 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.0   IRAY   rend error: CUDA device 0 (GeForce GTX 1080 Ti): an illegal instruction was encountered (while de-allocating memory)

2019-02-18 20:21:20.033 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : CPU: using 16 cores for rendering

2019-02-18 20:21:20.033 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Rendering with 1 device(s):

2019-02-18 20:21:20.033 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : CPU

2019-02-18 20:21:20.033 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Rendering...

2019-02-18 20:21:20.033 Iray VERBOSE - module:category(IRAY:RENDER):   1.7   IRAY   rend progr: CPU: Processing scene...

2019-02-18 20:21:33.033 Iray INFO - module:category(IRAY:RENDER):   1.7   IRAY   rend info : CPU: Scene processed in 12.999s

2019-02-18 20:21:33.033 Iray VERBOSE - module:category(IRAY:RENDER):   1.10  IRAY   rend stat : Native CPU code generated in 0.0135s

2019-02-18 20:21:33.045 Iray INFO - module:category(IRAY:RENDER):   1.7   IRAY   rend info : CPU: Allocated 39.5512 MiB for frame buffer

2019-02-18 20:21:34.429 Iray INFO - module:category(IRAY:RENDER):   1.7   IRAY   rend info : Allocating 1 layer frame buffer

2019-02-18 20:21:34.503 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00001 iterations after 81.208s.

2019-02-18 20:21:35.902 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00002 iterations after 82.605s.

Richard Haseltine

Have you updated your drivers to 418.x? if so roll bacvk to 417.71 - this is a known issue affecting all versions of Iray, and i believe Octane too.

Illidanstorm

Thanks, that worked :)