[Solved] Help needed! Crash on transparency close-ups - Iray
Ralf1958
Posts: 688
This is very unusual and never encountered before. I load rievel hair, no matter if with his own shaders or Iray shaders. As long as the hair is far away everything is fine. As soon as I make a portrait, Iray and DAZ both crash and shut down. This happens when rendering on nVidia card. Any ideas?
Post edited by Ralf1958 on
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No idea, but I own that hair and I'll try it. You finally succeeded with your image in the UHT thread, right? Did you find the fix?
That one was rendered on my notebook on CPU only. No problems rendering only on CPU also on the second computer. I am planning about formatting it. Something must be wrong with it.
This is really driving me nuts! I was able to render this image but as soon as I zoom in, it crashes! Bummer!
Giving up for tonight. Maybe I find the solution tomorrow
It rendered fine for me with UHT shader applied. I rendered GPU only on a 2 GB GTX 760. I got lots of these messages in the log, though:
Iray INFO - module:category(IRAY:RENDER): 1.10 IRAY rend info : CUDA device 0 (GeForce GTX 760): Prevent device timeout
Iray INFO - module:category(IRAY:RENDER): 1.9 IRAY rend info : CUDA device 0 (GeForce GTX 760): Prevented device timeout
Which reminded me that I made a registry change to Timeout Detection and Recovery of GPUs (TDR) several weeks ago to help overcome this issue. I think it did crash often before I did that. Maybe that is your issue. Does your log file give any clues?" You can read about the setting to change here: https://msdn.microsoft.com/en-us/library/windows/hardware/ff570087(v=vs.85).aspx
I have TdrDelay set to 8. By the way, I'm running Windows 7 64 bit on this computer. Instructions may vary for other Windows versions.
I had the TdrDelay already changed a long time ago, it's set to 60! But it didn't change a thing. I had the PC at the store, they changed my nVidia GTX 690 card and replaced it with a GTX 750 but still crashes. Now I ordered a GTX 970, it's going to be built in tomorrow. If even that one doesn't work, then I will have to format and see what happens after a fresh installation. The machine got built especially for my DAZ work and I am not doing much more else on that PC. That's why I am getting so frustrated.
Here is what happens when I render: I start the render and after sometimes a few seconds, sometimes minutes, the screen turns black for about 15 seconds. Then it comes back with an error message about the graphic driver. The DAZ program surface comes back with his middle viewport turned completely white, while Iray keeps rendering. The render goes all the way through to the end and, once finished, the attached image pops up. No matter what I click then, DAZ instantly shuts down and also the rendered image. Everything gone. When I look in the log file, there is absolutely nothing about error messages.
Ok, now I loaded another hair prop (Micah hair), just the hair, nothing else and... CRASH on zoom in! Distant renders work. I had the same problem with other renders, trying to render a simple window curtain. I always thougt it was the obj file beiing corrupted but now I really start thinking about the possibility of a transparency problem while doing close-ups.
Yep! Definetly the transmap! I just deleted the maps and the render went through. Put the maps back on and CRASH!
Ok, rendered the micha hair also, no changes in mats, added a HDR map for the lighting, rendered to 97% convergence (about 2700 iterations), no crash (using a GTX680).
Lucky you!
I am just trying something different. I was always trying to render a 720x720px image. Now it's rendering 1920x1080px and for now it's stable. But it's slow, so I have to wait until the end before saying it's really working.
Sorry, the size was 800x800px, not 720x720px
yep, lucky this time....., I did have two crashes in earlier scenes, but those were not close ups, but full character renderings, hair, clothing and all, and a studio setup. However when I tried that same scene the next day, it worked without crashing. I guess it is a bit of hit or miss,,,,,
This is a thing which I was struggling with for months. Sometimes no problems, other times constantly. I just stopped the last render and started a new one 1000x1000px. For now everything is fine. Wouldn't that be unexplainable if it would be just a matter of size? Very strange. The thing ist, that over the last months I spent a fortune in changing graphic cards and having the machine at the store at least 8 times having them to fix the issue. And they charge A LOT per hour!!! That would be annoing, to find out it would be enough to change the image size! *lol*
81% and it's still going...
I don't believe this now! It went through! I'll try another one!
Well... it really seems that rendering bigger images prevents unwanted crashes. It's nice to find that out after having posted and questioned many many times in the last months, without getting an answer directly from DAZ. I only had to buy a new card and spend about 1.000 € for having my PC checked several times by a specialist. This really makes me feel better... NOT! Probably I will have annoyed many people with my constant help search, sorry for that! Thanks DAZ, I could have spent all that money buying products in your store...