I get this error on some scenes when using a Maya displacement shader on the GPU:
// Error: [gpu] an error happened during rendering : Unknown error (Details: Function "_rtContextLaunch2D" caught exception: Encountered a CUDA error: cudaDriver().CuEventSynchronize( m_event ) returned (700): Illegal address, file: <internal>, line: 0) //
I am using a RTX 2070 Super.
The error occurs on a scene basis, it will begin happening randomly as far as I can tell and doesnt occur all the time even with the exact same shader setup in a different.
The same scene on the CPU renders with no issue.
Ignoring displacement in the diagnostics doesn't stop the error. The image texture and/or displacement shader has to be disconnected in the node editor. The scene will render with the same shader network if the displacment is disconnected (Maya restart is required). Using Arnold subdivision works fine, its only displacement.
I have tried up and down grading the MtoA version as well as installing different Nvidia drivers (both game and studio editions).
I do get a fatal GPU error occasionally when updating a scene in the render view, maybe its related.