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Not using full GPU after reinstall

ben2baxterben2baxter Posts: 0
in Daz Studio Discussion

Hello,

I recently had to do a full uninstall/reinstall of Studio and Central due to an issue in which studio was not launching correctly. Since the reinstall, studio is maxing out at 5.8 of my 8 gigs of GPU memory and subsequently rendering much less quickly. Is there a setting somewhere that I am missing which permits Daz Studio from utilizing the full amount of available memory? My CPU is only running at about 30% so i don't think that is the issue.

It's taking about 75% longer to render at this point, which is really killing my timelines.

Thanks in advance for your help :)

Comments

  • Richard HaseltineRichard Haseltine Posts: 102,244

    If your CPU is running at well under 100% then Iray probably is using the GPU - if you are using Task Manager to monitor then the default listing does not reflect CUDA usage, so it may appear idle when it isn't.

  • ben2baxterben2baxter Posts: 0

    Richard Haseltine said:

    If your CPU is running at well under 100% then Iray probably is using the GPU - if you are using Task Manager to monitor then the default listing does not reflect CUDA usI know task manager can be a litty spotty on this, but historically it was showing 7.8-8.0GB for the dedicated GPU. Now after the reinstall it is maxing at 5.9.age, so it may appear idle when it isn't.

    I know task manager can be a litty spotty on this, but historically it was showing 7.8-8.0GB for the dedicated GPU. Now after the reinstall it is maxing at 5.9.

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  • PerttiAPerttiA Posts: 10,024

    5.8GB is about maximum available to IRAY rendering on an 8GB card and that includes geometry, textures and the work space. If the geometry and textures are taking so much that the work space has less than 1-1.2GB's left, the rendering will be slower.

    I made some tests on my RTX 2070 super (8GB) and W7 Ultimate to see the difference between the figures reported by DS Log and what was actually used, W10 is said to reserve about 800MB's more for itself than W7.

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  • Richard HaseltineRichard Haseltine Posts: 102,244
    edited April 2021

    ben2baxter said:

    Richard Haseltine said:

    If your CPU is running at well under 100% then Iray probably is using the GPU - if you are using Task Manager to monitor then the default listing does not reflect CUDA usI know task manager can be a litty spotty on this, but historically it was showing 7.8-8.0GB for the dedicated GPU. Now after the reinstall it is maxing at 5.9.age, so it may appear idle when it isn't.

    I know task manager can be a litty spotty on this, but historically it was showing 7.8-8.0GB for the dedicated GPU. Now after the reinstall it is maxing at 5.9.

    Set one of the graphs to CUDA, or Compute_0 if there isn't a CUDA, to see the actual rendering activity. It looks to be using the GPU, so using less of its memory isn't an issue - perhaps previously you had the other setting for Instance Optimisation, or perhaps it's a Windows difference.

    Post edited by Richard Haseltine on
  • ebergerlyebergerly Posts: 3,255

    I loaded a very large scene on my 8GB RTX 2070 Super. According to Task Manager it used over 7 GB of the 8GB (close to 7.5 GB used by DAZ Studio). Windows 10 Desktop Windows Manager also used about 0.2 GB, and other apps (as shown below) also used the GPU memory. DAZ also required over 20GB of system RAM to load the scene.

    I'm not sure what the OP means by "maxing out". 

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  • ben2baxterben2baxter Posts: 0

    Richard Haseltine said:

    ben2baxter said:

    Richard Haseltine said:

    If your CPU is running at well under 100% then Iray probably is using the GPU - if you are using Task Manager to monitor then the default listing does not reflect CUDA usI know task manager can be a litty spotty on this, but historically it was showing 7.8-8.0GB for the dedicated GPU. Now after the reinstall it is maxing at 5.9.age, so it may appear idle when it isn't.

    I know task manager can be a litty spotty on this, but historically it was showing 7.8-8.0GB for the dedicated GPU. Now after the reinstall it is maxing at 5.9.

    Set one of the graphs to CUDA, or Compute_0 if there isn't a CUDA, to see the actual rendering activity. It looks to be using the GPU, so using less of its memory isn't an issue - perhaps previously you had the other setting for Instance Optimisation, or perhaps it's a Windows difference.

    I looked at the Cuda and it is hovering between 95% and 100%. The previous issue that led to the reinstall did start after a windows update, but I have no idea what would have caused it. I'll have to do some messing around with the render settings to see if there is something I missed when it comes to optomization.

    Thanks!

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