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Thread: rend error: an illegal memory access was encountered

  1. #1
    Join Date
    Dec 2017
    Posts
    274

    Default rend error: an illegal memory access was encountered

    I got this error a lot on a scene:

    1.0 POST rend error: an illegal memory access was encountered
    1.0 POST rend warn : Postprocessing is running on the CPU, but Denoiser is requested. Denoising is not available on CPU.
    1.0 IRAY rend error: CUDA device 0: cannot get memory statistics (an illegal memory access was encountered)

    And need to restart 3ds Max 2020 to continue to use GPU's.

    GPU drivers are latest latest.

    This is full error list:
    "
    1.4 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while launching CUDA renderer)
    1.4 IRAY rend error: CUDA device 1 (Quadro M5000): Failed to launch renderer
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): Device failed while rendering
    1.3 IRAY rend warn : All available GPUs failed.
    1.3 IRAY rend warn : No devices activated. Enabling CPU fallback.
    1.3 IRAY rend warn : Re-rendering iteration because of device failure
    1.3 IRAY rend error: All workers failed: aborting render
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.0 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.0 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.0 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.0 IRAY rend error: CUDA device 1 (Quadro M5000): an illegal memory access was encountered (while de-allocating memory)
    1.0 POST rend warn : renderer iray has no more devices available. Postprocessing falling back to CPU.
    1.0 POST rend warn : Postprocessing is running on the CPU, but Denoiser is requested. Denoising is not available on CPU.

    "

    Best!
    Nik
    Last edited by NikNastev; 23rd December, 2019 at 15:02.

  2. #2
    Join Date
    Dec 2017
    Posts
    274

    Default

    I will investigate a bit - I suspect that Iray ColorCorrect + Bitmap could be an issue here.

    Will check and will answer here later on.

    Best!
    Nik

  3. #3
    Join Date
    Dec 2017
    Posts
    274

    Default

    It looks like that was the problem - Bitmap map in Iray+ Color Correction (ICC) map.

    So, we can't use it atm (ICC).

    In my simple scene I have 1 (only one) ICC with Bitmap (that is in low res jpg file) and even then it caused me errors - in Active Shade at low res 500x900px.

    Best!
    Nik

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