Blender crashing when rendering with GPU tiles
I have a very complex scene , that I need to render out an animation for. When I render with progressive refine , it works fine , however, even after 10hrs @ 20000 samples it is far too noisy and progressive refine does not support denoising.
I have four GPU's in my PC - three GTX1080s and one GTX1080-Ti . If I enable all four , and render with tiles , the render time is only 2 hours and denoising would tidy the render up perfectly - IF it would work.
Every time I render with tiles , it gets about 20 mins in and then Blender just vanishes.
I have tried the scene in both 2.8 and 2.81 and both crash . I have also updated the drivers to the newest Nvidia studio driver , which states that it has been specifically tailored for studio work with programs including Blender Cycles renderer.
I would also like to try reading the error report which Blender apparently puts out after every crash but I have no idea where to find it.
Any help would be greatly appreciated.