IRay is using Shared memory as vRam!?

So, I was noticing yesterday, that In my one scene I was currently over by about 4gbs of required texture memory for a total 12gbs. However the scene was still rendering just fine without issues on my two gtx 1080sc (8gbs vRAM per card.) I noticed however my computers performence was awful. And I mean awful, I hadn't experienced this type of performence before while rendering. In fact, it was reminding me of how a computer acts when its out of regular RAM, or running out. The cursor was freezing, and what not, and everything was reaaal slow. But the render was still rendering away! So I ended up checking out my computers used resources and in fact my System RAM was at 99%-100% on and off, and CPU was 23%. Daz was using about 18% of my CPU, and about 15-16gbs of my sys RAM. I then went and checked my GPU overclocking software, and in fact they were both maxed out 2040-2056mhz with 8079mbs used on both. It greatly confused me as I have read, and been told everywhere that IRay is Vram only. So just for kicks, I went out and purchased another 16gbs of RAM and tossed it in my computer, and decided to double everything that was in that current scene. I now had 10 Genesis 8 characters and about 20 (enviorment objects like walls and decor.) I for-sure thought my computer was just going to crash, or drivers would crash, and I'd be looking at a black screen until I restarted my computer, OR it would switch to CPU rendering. Render info menu pops up. Says I'm at 21gbs for Device 0 and 1. And then it starts doing some iterations... I check my sys RAM usage its at 80% (with the 32gbs) now with about 24gbs used... I'm extremely confused here. Cuz from what I can tell some of these numbers don't even add up.

 

Does IRay have a Shared Memory option? If not then how am I able to render these scenes with my GPUs?

 

If this is some sort of bug tho... I am never changing my Driver and Daz version lol

Comments

  • Some of the log file, i just rendered it again here just for observation purposes, as the render from yesterday that i'm talking about wasn't in the logfile anymore.

     

    2018-03-23 12:49:38.602 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Updating geometry.
    2018-03-23 12:49:38.626 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Using built-in ray tracing (1.0.0).
    2018-03-23 12:49:38.626 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Importing scene graph.
    2018-03-23 12:49:38.626 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Importing geometry.
    2018-03-23 12:49:45.794 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Geometry import (1 object with 214832k triangles, 1 instance yielding 214832k triangles) took 7.167993
    2018-03-23 12:49:45.801 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Updating materials.
    2018-03-23 12:49:45.888 Iray INFO - module:category(MATCNV:RENDER):   1.0   MATCNV rend info : found 11359 textures, 0 lambdas (0 unique)
    2018-03-23 12:49:45.931 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Emitter geometry import (9 light sources with 138 triangles, 1 instance) took 0.00s
    2018-03-23 12:49:45.932 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Updating environment.
    2018-03-23 12:49:45.939 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Updating lens.
    2018-03-23 12:49:45.939 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Updating lights.
    2018-03-23 12:49:45.939 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Updating object flags.
    2018-03-23 12:49:45.939 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Updating caustic portals.
    2018-03-23 12:49:45.939 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Updating decals.
    2018-03-23 12:49:45.948 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Allocating 1 layer frame buffer
    2018-03-23 12:49:45.968 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Using batch scheduling, architectural sampler disabled, caustic sampler disabled
    2018-03-23 12:49:45.968 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Initializing local rendering.
    2018-03-23 12:49:45.976 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Rendering with 2 device(s):
    2018-03-23 12:49:45.984 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info :     CUDA device 0 (GeForce GTX 1080)
    2018-03-23 12:49:45.984 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info :     CUDA device 1 (GeForce GTX 1080)
    2018-03-23 12:49:45.984 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Rendering...
    2018-03-23 12:49:45.984 Iray VERBOSE - module:category(IRAY:RENDER):   1.5   IRAY   rend progr: CUDA device 1 (GeForce GTX 1080): Processing scene...
    2018-03-23 12:49:45.985 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend progr: CUDA device 0 (GeForce GTX 1080): Processing scene...
    2018-03-23 12:50:03.013 Iray VERBOSE - module:category(IRAY:RENDER):   1.6   IRAY   rend stat : Geometry memory consumption: 1.412 GiB (device 0), 0 B (host)
    2018-03-23 12:50:03.027 Iray VERBOSE - module:category(IRAY:RENDER):   1.4   IRAY   rend stat : Geometry memory consumption: 1.412 GiB (device 1), 0 B (host)
    2018-03-23 12:51:55.925 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : Initializing light hierarchy.
    2018-03-23 12:51:55.925 Iray VERBOSE - module:category(IRAY:RENDER):   1.4   IRAY   rend stat : Texture memory consumption: 21.2898 GiB (device 1)
    2018-03-23 12:51:55.935 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : Light hierarchy initialization took 0.00s
    2018-03-23 12:51:55.936 Iray VERBOSE - module:category(IRAY:RENDER):   1.6   IRAY   rend stat : Texture memory consumption: 21.2898 GiB (device 0)
    2018-03-23 12:51:55.937 Iray VERBOSE - module:category(IRAY:RENDER):   1.6   IRAY   rend stat : Lights memory consumption: 47.9258 KiB (device 0)
    2018-03-23 12:51:55.937 Iray VERBOSE - module:category(IRAY:RENDER):   1.4   IRAY   rend stat : Lights memory consumption: 47.9258 KiB (device 1)
    2018-03-23 12:51:56.701 Iray VERBOSE - module:category(IRAY:RENDER):   1.4   IRAY   rend stat : Material measurement memory consumption: 0 B (GPU)
    2018-03-23 12:51:56.703 Iray VERBOSE - module:category(IRAY:RENDER):   1.4   IRAY   rend stat : Materials memory consumption: 972.273 MiB (GPU)
    2018-03-23 12:51:56.734 Iray INFO - module:category(IRAY:RENDER):   1.5   IRAY   rend info : CUDA device 1 (GeForce GTX 1080): Scene processed in 130.750s
    2018-03-23 12:51:56.741 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : CUDA device 0 (GeForce GTX 1080): Scene processed in 130.757s
    2018-03-23 12:51:56.789 Iray INFO - module:category(IRAY:RENDER):   1.5   IRAY   rend info : CUDA device 1 (GeForce GTX 1080): Allocated 284.3757 MiB for frame buffer
    2018-03-23 12:51:56.810 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : CUDA device 0 (GeForce GTX 1080): Allocated 284.3757 MiB for frame buffer
    2018-03-23 12:51:56.831 Iray INFO - module:category(IRAY:RENDER):   1.5   IRAY   rend info : CUDA device 1 (GeForce GTX 1080): Allocated 1.005 GiB of work space (1212k active samples in 0.003s)
    2018-03-23 12:51:56.854 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : CUDA device 0 (GeForce GTX 1080): Allocated 1.005 GiB of work space (1212k active samples in 0.002s)
    2018-03-23 12:51:56.854 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : CUDA device 0 (GeForce GTX 1080): Used for display, optimizing for interactive usage (performance could be sacrificed)
    2018-03-23 12:51:58.060 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : Allocating 1 layer frame buffer
    2018-03-23 12:52:08.522 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00001 iterations after 142.538s.
    2018-03-23 12:52:08.569 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00002 iterations after 142.585s.
    2018-03-23 12:52:08.841 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00008 iterations after 142.856s.
    2018-03-23 12:52:09.159 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00015 iterations after 143.174s.
    2018-03-23 12:52:10.139 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00016 iterations after 144.155s.
    2018-03-23 12:52:10.379 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00017 iterations after 144.395s.

     

  • The log did show that Iray used the GPUs through to the end? Memory will still show as used even if the limit is passed. Also note that the texture memory use given in the log ignors compression, as far as we can tell, so if thats ays there's more than 8GB it doesn't actually mean it won't fit once compressed.

  • btymoffersbtymoffers Posts: 22
    edited March 2018

    The log did show that Iray used the GPUs through to the end? Memory will still show as used even if the limit is passed. Also note that the texture memory use given in the log ignors compression, as far as we can tell, so if thats ays there's more than 8GB it doesn't actually mean it won't fit once compressed.

    Yes to 500 Iterations which is what It was set to. As far as compression goes, I think mine is set to 512-768? or something along that line, Can't check at this moment, in the middle of a lengthy render :P

    Post edited by btymoffers on
  • fastbike1fastbike1 Posts: 4,074

    @btymoffers

    Sure you don't have GPU + CPU selected for rendering?

  • fastbike1 said:

    @btymoffers

    Sure you don't have GPU + CPU selected for rendering?

    100% certain. CPU rendering turned on makes renders 10% the speed of my GPU rendering. There is an extremely noticable difference between the two in render times.

  • fastbike1fastbike1 Posts: 4,074

    @btymoffers

    I don't think you understood my question. Nevertheless Iray doesn't use shared memory as Vram. If it did, no one would be complaining about renders dropping to CPU only.

  • btymoffersbtymoffers Posts: 22
    edited March 2018
    fastbike1 said:

    @btymoffers

    I don't think you understood my question. Nevertheless Iray doesn't use shared memory as Vram. If it did, no one would be complaining about renders dropping to CPU only.

    Hmmm, the way I understood the question was you were thinking I had CPU and Both my GPUs checked off under Render Settings>Advanced. Which I don't. Cuz if I did then two iterations would be done with the GPUs quickly, then they would be waiting for the iteration by CPU to be completed before moving to the next, which would cause the total rendering time to increase by (at the very) least 40%. Also the logs do not regonize the CPU as a rendering option, nor does it come up at any point during the render(or falling back to the CPU.) I've sense tested at a very higher iteration aswell rendering 3x the quality of an image to about 3000 iterations, and it didn't fall back to the CPU. So I believe its safe to say that the CPU isn't being used for the iteration rendering process.  Also, as mentioned in the original post, DAZ is only using about 18% of the my proccessor during the rendering proccess.

    However, I do apoligize if I have missunderstood your question, if I did could you clarify?

     

    PS: Awhile back I had a CPU falling back issue, which I've sense resolved. It was because Optix Prime Acceleration was enabled. And that setting isn't correctly compatible with GTX 10XX series. So it would render the first frame and then fall back to CPU. Since then I haven't had another CPU incident with DAZStudios.

    Post edited by btymoffers on
  • Maybe some other program that use CUDA can change the behaviour of IRay. I use my laptop for rendering since I am just an amateur. The video card is a GTX960M with 2GB vRam so most of my scene can only render by CPU. But today I tried to render a large scene while I was working with MATLAB, and I noticed that the GPU is also full loaded. Then I did some test and found that IRay can use GPU when MATLAB is running, but will fallback to CPU if MATLAB is turned off.

    This is the log file that when MATLAB is not running, IRay fallback to CPU:

    2018-12-26 23:23:48.827 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : Initializing light hierarchy.
    2018-12-26 23:23:48.827 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Texture memory consumption: 2.7892 GiB (device 0)
    2018-12-26 23:23:48.998 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : Light hierarchy initialization took 0.17s
    2018-12-26 23:23:49.000 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Lights memory consumption: 1.64833 MiB (device 0)
    2018-12-26 23:23:49.273 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Material measurement memory consumption: 0 B (GPU)
    2018-12-26 23:23:49.275 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Materials memory consumption: 328.035 KiB (GPU)
    2018-12-26 23:23:49.852 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Scene processed in 36.127s
    2018-12-26 23:23:49.853 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): out of memory (while allocating memory)
    2018-12-26 23:23:49.853 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): Failed to allocate 865.793 MiB
    2018-12-26 23:23:49.879 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Allocated 221.485 MiB for frame buffer
    2018-12-26 23:23:49.912 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Allocated 227.217 MiB of work space (274k active samples in 0.003s)
    2018-12-26 23:23:49.914 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.4   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): out of memory (while launching CUDA ior stack renderer in core_cuda_host.cpp:209)
    2018-12-26 23:23:49.919 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): Failed to update ior stack
    2018-12-26 23:23:49.919 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): Device failed while rendering
    2018-12-26 23:23:49.919 WARNING: dzneuraymgr.cpp(307): Iray WARNING - module:category(IRAY:RENDER):   1.3   IRAY   rend warn : All available GPUs failed.
    2018-12-26 23:23:49.924 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : Falling back to CPU rendering.
    2018-12-26 23:23:49.924 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): out of memory (while initializing memory buffer)
    2018-12-26 23:23:49.924 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: All workers failed: aborting render
    2018-12-26 23:23:49.934 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : CPU: using 8 cores for rendering
    2018-12-26 23:23:49.935 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Rendering with 1 device(s):
    2018-12-26 23:23:49.935 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info :     CPU
    2018-12-26 23:23:49.935 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Rendering...
    2018-12-26 23:23:49.935 Iray VERBOSE - module:category(IRAY:RENDER):   1.3   IRAY   rend progr: CPU: Processing scene...

     

    But if MATLAB is running(even it is not doing any calculation), IRay will not fallback to CPU and GPU-Z shows that the GPU is full loaded:

    2018-12-26 23:33:46.973 Iray VERBOSE - module:category(IRAY:RENDER):   1.3   IRAY   rend progr: CUDA device 0 (GeForce GTX 960M): Processing scene...
    2018-12-26 23:33:47.032 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Geometry memory consumption: 97.664 MiB (device 0), 0 B (host)
    2018-12-26 23:34:21.803 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : Initializing light hierarchy.
    2018-12-26 23:34:21.803 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Texture memory consumption: 2.7892 GiB (device 0)
    2018-12-26 23:34:21.973 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : Light hierarchy initialization took 0.17s
    2018-12-26 23:34:21.975 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Lights memory consumption: 1.64833 MiB (device 0)
    2018-12-26 23:34:22.234 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Material measurement memory consumption: 0 B (GPU)
    2018-12-26 23:34:22.235 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Materials memory consumption: 328.035 KiB (GPU)
    2018-12-26 23:34:22.690 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Scene processed in 35.716s
    2018-12-26 23:34:22.696 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): out of memory (while allocating memory)
    2018-12-26 23:34:22.696 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): Failed to allocate 865.793 MiB
    2018-12-26 23:34:22.724 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Allocated 221.485 MiB for frame buffer
    2018-12-26 23:34:24.345 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:24.379 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:27.905 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:27.934 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:31.444 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:31.473 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:35.003 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:35.032 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:38.632 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:38.664 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:42.348 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:42.385 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:46.257 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:46.295 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:50.249 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:50.287 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:54.348 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:54.385 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:58.290 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:58.326 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:02.031 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:02.068 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:05.820 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:05.858 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:09.503 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:09.541 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:13.149 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:13.181 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:16.727 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:16.760 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:20.248 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:20.280 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:23.817 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:23.855 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:27.422 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:27.451 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:30.927 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:30.955 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:34.197 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:34.224 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:35.759 WARNING: cloud\dzcloudtasknotifier.cpp(178): peer performed orderly shutdown errno=0
    2018-12-26 23:35:37.464 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:37.490 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:40.770 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:40.798 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:44.084 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:44.114 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:47.387 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:47.419 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:50.704 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:50.733 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:53.946 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:53.973 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:56.869 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:56.897 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:59.744 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:59.766 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:36:02.588 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:36:02.611 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:36:05.374 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:36:05.397 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:36:08.118 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:36:08.139 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:36:10.898 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:36:10.925 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:36:12.080 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : Allocating 1 layer frame buffer
    2018-12-26 23:36:12.213 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Allocated 119.664 MiB of work space (144k active samples in 0.013s)
    2018-12-26 23:36:12.342 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00001 iterations after 145.359s.
    2018-12-26 23:36:43.392 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00002 iterations after 176.407s.
    2018-12-26 23:37:14.576 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00003 iterations after 207.589s.
    2018-12-26 23:37:45.719 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00004 iterations after 238.729s.

     

  • ywb9375 said:

    Maybe some other program that use CUDA can change the behaviour of IRay. I use my laptop for rendering since I am just an amateur. The video card is a GTX960M with 2GB vRam so most of my scene can only render by CPU. But today I tried to render a large scene while I was working with MATLAB, and I noticed that the GPU is also full loaded. Then I did some test and found that IRay can use GPU when MATLAB is running, but will fallback to CPU if MATLAB is turned off.

    This is the log file that when MATLAB is not running, IRay fallback to CPU:

    2018-12-26 23:23:48.827 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : Initializing light hierarchy.
    2018-12-26 23:23:48.827 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Texture memory consumption: 2.7892 GiB (device 0)
    2018-12-26 23:23:48.998 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : Light hierarchy initialization took 0.17s
    2018-12-26 23:23:49.000 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Lights memory consumption: 1.64833 MiB (device 0)
    2018-12-26 23:23:49.273 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Material measurement memory consumption: 0 B (GPU)
    2018-12-26 23:23:49.275 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Materials memory consumption: 328.035 KiB (GPU)
    2018-12-26 23:23:49.852 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Scene processed in 36.127s
    2018-12-26 23:23:49.853 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): out of memory (while allocating memory)
    2018-12-26 23:23:49.853 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): Failed to allocate 865.793 MiB
    2018-12-26 23:23:49.879 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Allocated 221.485 MiB for frame buffer
    2018-12-26 23:23:49.912 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Allocated 227.217 MiB of work space (274k active samples in 0.003s)
    2018-12-26 23:23:49.914 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.4   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): out of memory (while launching CUDA ior stack renderer in core_cuda_host.cpp:209)
    2018-12-26 23:23:49.919 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): Failed to update ior stack
    2018-12-26 23:23:49.919 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): Device failed while rendering
    2018-12-26 23:23:49.919 WARNING: dzneuraymgr.cpp(307): Iray WARNING - module:category(IRAY:RENDER):   1.3   IRAY   rend warn : All available GPUs failed.
    2018-12-26 23:23:49.924 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : Falling back to CPU rendering.
    2018-12-26 23:23:49.924 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): out of memory (while initializing memory buffer)
    2018-12-26 23:23:49.924 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: All workers failed: aborting render
    2018-12-26 23:23:49.934 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : CPU: using 8 cores for rendering
    2018-12-26 23:23:49.935 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Rendering with 1 device(s):
    2018-12-26 23:23:49.935 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info :     CPU
    2018-12-26 23:23:49.935 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Rendering...
    2018-12-26 23:23:49.935 Iray VERBOSE - module:category(IRAY:RENDER):   1.3   IRAY   rend progr: CPU: Processing scene...

     

    But if MATLAB is running(even it is not doing any calculation), IRay will not fallback to CPU and GPU-Z shows that the GPU is full loaded:

    2018-12-26 23:33:46.973 Iray VERBOSE - module:category(IRAY:RENDER):   1.3   IRAY   rend progr: CUDA device 0 (GeForce GTX 960M): Processing scene...
    2018-12-26 23:33:47.032 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Geometry memory consumption: 97.664 MiB (device 0), 0 B (host)
    2018-12-26 23:34:21.803 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : Initializing light hierarchy.
    2018-12-26 23:34:21.803 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Texture memory consumption: 2.7892 GiB (device 0)
    2018-12-26 23:34:21.973 Iray INFO - module:category(IRAY:RENDER):   1.2   IRAY   rend info : Light hierarchy initialization took 0.17s
    2018-12-26 23:34:21.975 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Lights memory consumption: 1.64833 MiB (device 0)
    2018-12-26 23:34:22.234 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Material measurement memory consumption: 0 B (GPU)
    2018-12-26 23:34:22.235 Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend stat : Materials memory consumption: 328.035 KiB (GPU)
    2018-12-26 23:34:22.690 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Scene processed in 35.716s
    2018-12-26 23:34:22.696 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): out of memory (while allocating memory)
    2018-12-26 23:34:22.696 WARNING: dzneuraymgr.cpp(307): Iray ERROR - module:category(IRAY:RENDER):   1.3   IRAY   rend error: CUDA device 0 (GeForce GTX 960M): Failed to allocate 865.793 MiB
    2018-12-26 23:34:22.724 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Allocated 221.485 MiB for frame buffer
    2018-12-26 23:34:24.345 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:24.379 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:27.905 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:27.934 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:31.444 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:31.473 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:35.003 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:35.032 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:38.632 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:38.664 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:42.348 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:42.385 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:46.257 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:46.295 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:50.249 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:50.287 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:54.348 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:54.385 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:34:58.290 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:34:58.326 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:02.031 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:02.068 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:05.820 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:05.858 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:09.503 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:09.541 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:13.149 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:13.181 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:16.727 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:16.760 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:20.248 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:20.280 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:23.817 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:23.855 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:27.422 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:27.451 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:30.927 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:30.955 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:34.197 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:34.224 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:35.759 WARNING: cloud\dzcloudtasknotifier.cpp(178): peer performed orderly shutdown errno=0
    2018-12-26 23:35:37.464 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:37.490 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:40.770 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:40.798 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:44.084 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:44.114 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:47.387 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:47.419 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:50.704 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:50.733 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:53.946 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:53.973 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:56.869 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:56.897 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:35:59.744 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:35:59.766 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:36:02.588 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:36:02.611 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:36:05.374 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:36:05.397 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:36:08.118 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:36:08.139 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:36:10.898 Iray INFO - module:category(IRAY:RENDER):   1.10  IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevent device timeout
    2018-12-26 23:36:10.925 Iray INFO - module:category(IRAY:RENDER):   1.4   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Prevented device timeout
    2018-12-26 23:36:12.080 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : Allocating 1 layer frame buffer
    2018-12-26 23:36:12.213 Iray INFO - module:category(IRAY:RENDER):   1.3   IRAY   rend info : CUDA device 0 (GeForce GTX 960M): Allocated 119.664 MiB of work space (144k active samples in 0.013s)
    2018-12-26 23:36:12.342 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00001 iterations after 145.359s.
    2018-12-26 23:36:43.392 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00002 iterations after 176.407s.
    2018-12-26 23:37:14.576 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00003 iterations after 207.589s.
    2018-12-26 23:37:45.719 Iray INFO - module:category(IRAY:RENDER):   1.0   IRAY   rend info : Received update to 00004 iterations after 238.729s.

     

    How to use MATLAB ?

    Where can i turn it on ?

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