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Did the latest updates for Daz3d break Iray rendering for older GPUs?

thewritingweaselthewritingweasel Posts: 0
in Technical Help (nuts n bolts)

I've got a computer that's getting a bit long in the tooth; i5-2400 processor, 12GB RAM, Nvidia 2GB GT 730 GPU, Win7 operating system.

It's been a while since I've done any renders on that computer (last was done February 2019) but I never had a problem with doing any renders in Iray on it until today.

Any render I try to do in Iray now results in nothing but a checkered white and grey image. The renders 'complete' in less than a second, regardless of the complexity.

I tried updating my drivers to the latest I could get (391.35) but that did nothing. I tried playing around with the render settings, but can't get it to work with the GPU. I tried restarting the computer.

My current Daz3d version is 4.11.0.383 and seems to be the latest.

I can still render Iray in CPU mode, but it brings my machine to an absolute crawl and is far slower than running it on my GPU. I can also render in 3delight without issue.

 

The error log shows this, which seems pertinent:

2019-09-19 15:56:36.683 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(302): Iray ERROR - module:category(IRAY:RENDER):   1.0   IRAY   rend error: Cannot render: found no usable devices.
2019-09-19 15:56:36.683 Iray Render error: Invalid parameters (NULL pointer).

 

However, Daz3d still recognizes my GT 730 as being installed in the options and preferences.

Kind of at a loss of where to go from here. The only thing I've really changed for installations or anything since Iray renders last worked was Daz3d itself, likely a few months ago. Unfortunately, I can't seem to find a way to roll back to an older version of Daz3d to test, as there aren't any installers for that purpose.

Anybody know what the issue I'm having could be?

Comments

  • Three ElvesThree Elves Posts: 6

    I think the older Nvidia drivers don't work with the newer Iray version used in DAZ 4.11.

    You should try to update to the latest driver for your card, as far as i could see it is still supported in the most recent released driver (416.94).

    https://www.nvidia.com/Download/index.aspx

  • AtiAti Posts: 9,143

    Yeah, it's most likely the video driver. When I updated to 4.11, I was panicking a bit because the graphics card was not being used, but then I realized that the drivers may not be up-to-date. A quick update, and Daz Studio started using the card again. Phew.

  • prixatprixat Posts: 1,590

    Bad news. Iray stopped supporting some older cards in 2018, based on the Microarchitecture.

    Fermi, Kepler, Maxwell, Pascal, Turing, Ampere???

    You'll need at least a 'Maxwell' based card. That translates to a 750ti for example.

    Your 730 just misses the cut off as it is the older 'Fermi' or 'Kepler'. (The 730 came in both flavours)

  • Three ElvesThree Elves Posts: 6

    I may be wrong, but as far as i know the Iray versions used in DAZ 4.11 still supported Kepler cards.

    Kepler support was dropped in one of the recent releases of the 4.12 beta, but the thread opener referred to using 4.11.

     

    The GT 730 with 2GB VRAM was always a card using the Kepler microarchitecture, so given the right drivers it should still work with DAZ 4.11.

  • thewritingweaselthewritingweasel Posts: 0

    Thanks for the responses everyone!

    Going off of what everyone said, I looked into it a bit more and it seems the consensus is right: The GPU I have is simply too old.

    Apparently there are several versions of the GT 730. Mine seems to be a 'Fermi' build and is no longer supported by Nvidia. So I'm unable to install the latest drivers which seem necessary for the Iray renderer to work properly in the latest version of Daz3d.

    Bummer.

     

    But, I've been due for replacing this old computer I've been using, and now I've got an excuse for it. 

    Considering going for an AMD Ryzen build this time, with either a 1660ti or a 2060 Super for a GPU.

    In the meantime my laptop with a 1050ti will have to be my sole Daz3d machine for now.

  • kenshaw011267kenshaw011267 Posts: 3,805

    If at all possible go for the 2060 Super. It has more VRAM, more CUDA and RTX features. All of which will make for a better rendering experience. Your present computer might be upgradeable. You just need to verify that you have a 6+2 pin PCIE connector from the power supply.

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