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Access Violation Crashes

Limosisv2Limosisv2 Posts: 4
in Technical Help (nuts n bolts)

Hi Folks.

So I've been getting an access violation crash, which happens most frequently when trying a progressive render in the viewport, but not all the time. Maybe 1 of every 6 renders crashes.

DAZStudio.exe caused ACCESS_VIOLATION in module "C:\Program Files\DAZ 3D\DAZStudio4\dz3delight.dll" at 0033:00000000140A89C7, Dz3DelightDll::DSlo_DetailtoStr()+286023 byte(s)

I'm aware that Daz no longer supports 3delight, butt i have tried a couple of different versions of Daz3d with 3delights plugin as part of the install, all with the same frustrating result.

Note:: This crash rarely ever happens to a non-progressive render, directly to file.

Comments

  • Richard HaseltineRichard Haseltine Posts: 110,075

    What about a non-progressive render to a new  window, or a progressive render to a file? Which versions of Daz Studio are you using?

  • Limosisv2Limosisv2 Posts: 4
    edited May 17

    Currently using v4.21, but have tried v4.24 also.

    I've done some testing over the day and I've worked out a few things:

    • Crashing happens whenever I am not rendering to file. It doesn't happen every attempt, but 1/5 attempts at rendering in viewport or to window will crash, Progressive or not progressive.
    • Rendering to a file crashing in this way nearly never happens. I render to file quite regularly and only recall 1 time in the last 6 months where it happened.
    • CPU usage will spike to 99% percent duing all renders, but will yo-yo between 99% and 39% constantly when rendering to a window or viewport
    • CPU usage is far more stable when rendering to file, with an initial spike to 99%, but constant 37% for the rest of the render (which could take an hour or more)
    • GPU usage seems nearly non-existant, with my Geforce rarely registering above 2% during a render. Maybe some brief moments when it spikes to 11% for less than a second.

    Is it normal for the CPU to be spiking to 99%? My PC isn't brand new, but it is powerful enough to not struggle with any other software/game.

     

    Edit: I've just noticed that the CPU sitting on 99% correlates to the software window being maximised and visible on the monitor, and drops below 40% when the window is minimised... strange...

    Post edited by Limosisv2 on
  • Richard HaseltineRichard Haseltine Posts: 110,075

    3Delight should use all of the CPU cores by default. It iis a puely CPU render engine, so any GPU activity is not part of the render process - and the extent to which the CPU is used should not depend on the render target, unless the writing to disc is imposing a severe bottleneck. I do wonder if there is a heat-related issue with your CPU.

  • Limosisv2Limosisv2 Posts: 4

    Thanks Richard.

    Can confirm it looks like my PC is overheating/throttling and shutting down Daz. It appears to work fine when i put Daz in efficiency mode, even progressive rendering in viewport.

    I will have to address what is causing the heat buildup.

  • garrett_3dgarrett_3d Posts: 294

    What exactly is overheating? CPU? GPU?

    Have you checked all the fans are working and flowing in the correct direction? One side should draw air into the case, other side blowing out. (Not trying to teach you to suck eggs but I've repaired countless "professionally built" PCs that were overheating due to incorrect airflow).

    CPU overheat can usually be cured by replacing thermal paste and cleaning out the heatsink fins, providing it's not suffered any long term damage.

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