Problem with Iray Render

usahawansufi6c2

So, weeks prior everything was working fine. I could render 5000 max samples and after clicking 'render' button, things would get started instantaneously. Now, whenever I hit on 'render', computer goes into freeze, GPU suddenly stops and goes to sleep, and screen starts lagging, and render is stuck at 0% for the first twenty minutes. It takes TWO HOURS to render 500 max samples whereas before in two hours I could get 3000+ MAX SAMPLES in two hours! (regardless environmen used etc) I don't know why I am facing this abrupt change. I am using Acer Nitro 5, with 8 GB RAM and a 1050 GTX 4GB GDDR5!

Mattymanx

Did you update your video drivers?

Was the update done manually by you or via Windows update?

What version of Daz Studio are you using?

usahawansufi6c2

Mattymanx said:

Did you update your video drivers?

Was the update done manually by you or via Windows update?

What version of Daz Studio are you using?

I've updated the driver so many times. Before the update, everything worked just fine. I ended up deleting the driver again last night, but the problem persists. I am using 4.10 Pro Daz.

JamesJAB

That sounds like your scene is too big to fit into the GPU memory.
While actively rendering do this:
Press CTRL + Shift + ESC
Press the "More Details" button
"Performance tab"
Click on the GPU on the left side bar
Click the "Video Encode" drop down and select "Cuda" (if Cuda is not on the list, choose "Compute_0")

If there is no activity in the Cuda (or Compute_0) window, it means your GPU is not being used ion the render job.

usahawansufi6c2

JamesJAB said:

That sounds like your scene is too big to fit into the GPU memory.
While actively rendering do this:
Press CTRL + Shift + ESC
Press the "More Details" button
"Performance tab"
Click on the GPU on the left side bar
Click the "Video Encode" drop down and select "Cuda" (if Cuda is not on the list, choose "Compute_0")

If there is no activity in the Cuda (or Compute_0) window, it means your GPU is not being used ion the render job.

I refuse to accept that it's too big. I've certainly rendered scenes more complex before. Yet never experienced any issues like my GPU not being used or going to sleep for the first 20 minutes. I did try deleting everything and rendering a single genesis, and the same problem turned up. It would only render after 20 minutes of my computer going into freeze. Whereas before render would begin the first 2 minutes, and no freezing ever ensued.

L'Adair

It sounds like Daz Studio is using the CPU to render. That could be a hardware/Driver issue, as MattyManx' questions explore. It could also be the scene you are trying to render is too large for your video card's RAM. I have a GTX 1080 with 8GB RAM, and I've had times when I had to render CPU Only because the used more memory than I had available. (For me, that's somewhere around 7GB, as Windows reserves some of that RAM for the computer.)

I recommend saving the scene. Closing Daz Studio. Reopen Daz Studio. Open a different scene, one that previously rendered "fine," and try rendering that one. If it also appears to "freeze" and the render takes 20 minutes or so to even start, you can rule out the scene as the culprit. However, if the older scene renders as it did previously, you'll know your current scene is just too "big" for the video card.

usahawansufi6c2

L'Adair said:

It sounds like Daz Studio is using the CPU to render. That could be a hardware/Driver issue, as MattyManx' questions explore. It could also be the scene you are trying to render is too large for your video card's RAM. I have a GTX 1080 with 8GB RAM, and I've had times when I had to render CPU Only because the used more memory than I had available. (For me, that's somewhere around 7GB, as Windows reserves some of that RAM for the computer.)

I recommend saving the scene. Closing Daz Studio. Reopen Daz Studio. Open a different scene, one that previously rendered "fine," and try rendering that one. If it also appears to "freeze" and the render takes 20 minutes or so to even start, you can rule out the scene as the culprit. However, if the older scene renders as it did previously, you'll know your current scene is just too "big" for the video card.

I don't think so... It's still using the GPU. It's just that lately my GPU goes to sleep too often. Iray Viewport works flawlessly though. But as soon as I hit render, it just goes silent and does not do anything until after 20 minutes have passed.

L'Adair

usahawansufi6c2 said:

JamesJAB said:

That sounds like your scene is too big to fit into the GPU memory.
While actively rendering do this:
Press CTRL + Shift + ESC
Press the "More Details" button
"Performance tab"
Click on the GPU on the left side bar
Click the "Video Encode" drop down and select "Cuda" (if Cuda is not on the list, choose "Compute_0")

If there is no activity in the Cuda (or Compute_0) window, it means your GPU is not being used ion the render job.

 

I refuse to accept that it's too big. I've certainly rendered scenes more complex before. Yet never experienced any issues like my GPU not being used or going to sleep for the first 20 minutes. I did try deleting everything and rendering a single genesis, and the same problem turned up. It would only render after 20 minutes of my computer going into freeze. Whereas before render would begin the first 2 minutes, and no freezing ever ensued.

Download and install GPU-Z, then run it before you start the render. That will tell you exactly how much of your video memory is being used. (It will tell you a lot of other things about your video card, too.)

But before you try rendering anything else, turn off you computer, wait five minutes or more, and turn the computer back on. (I used to work in tech support for a local Internet Service Provider, and it is astounding how many computer ills can be remedied with a hard reboot!) At the very least, if nothing changes, you'll know it's not a gltich.

Mattymanx

What version of Windows are you on?  I wonder if windows updated something on your system that messed it up.

When was your last restore point?