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Thread: Illegal memory access? Help

  1. #1
    Join Date
    Mar 2018
    Posts
    4

    Default Illegal memory access? Help

    A few days ago after opening a scene to continue working on it i got this message in my render message.


    1.22 IRAY rend error: CUDA device 1 (GeForce GTX 1080): Tail kernel failed after 0.012s
    1.6 IRAY rend error: CUDA device 0 (GeForce GTX 1080): Kernel [20] (Finalize ) failed after 0.005s
    1.22 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while launching CUDA renderer in core_renderer_wf.cpp:568)
    1.22 IRAY rend error: CUDA device 1 (GeForce GTX 1080): Failed to launch renderer
    1.6 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while launching CUDA renderer in core_renderer_wf.cpp:771)
    1.6 IRAY rend error: CUDA device 0 (GeForce GTX 1080): Failed to launch renderer
    1.3 IRAY rend error: CUDA device 1 (GeForce GTX 1080): Device failed while rendering
    1.4 IRAY rend error: CUDA device 0 (GeForce GTX 1080): Device failed while rendering
    1.4 IRAY rend warn : Re-rendering iteration because of device failure
    1.4 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.4 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.4 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.4 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.4 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.4 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.4 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.4 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.4 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.3 IRAY rend error: CUDA device 1 (GeForce GTX 1080): 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 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.0 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.0 IRAY rend error: CUDA device 1 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.0 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.0 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)
    1.0 IRAY rend error: CUDA device 0 (GeForce GTX 1080): an illegal memory access was encountered (while de-allocating memory)

    I hadn't changed anything and it rendered fine the day before. What happened? I tried changing between the 3 version of iray that i have and all of them give this message

    System specs -

    CPU - 5820k
    GPU - evga gtx 1080 ftw x2
    Ram - 32gb

  2. #2
    Join Date
    Apr 2018
    Posts
    3

    Default

    I'm having this same issue. My iray log read the same as above - illegal memory access was encountered...falling back to CPU.

    CPU - Intel i9
    GPU - P4000 (x4)
    RAM - 32gb

  3. #3

    Default

    Have you tried to install the latest drivers?

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